Using doubles plus one fact the sum of 8 + 8 + 1is equal to 17 it is done by simply adding 1 to the given number.
Doubles plus one fact is used to add numbers which are next to each other.
Doubles plus one fact is simply done by doubling the number and adding one to it.
The sum of 8 + 8 can be determined by using doubles plus one fact as:
Simply add 1 in 8 + 8 + 1 to get the result required.
8 + 8 + 1 = 17
Therefore by using doubles plus one fact the sum of 8 + 8 + 1 is equal to 17.
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What theorem states that if the two legs of one right triangle are congruent to two legs of another right triangle then the two right triangles are congruent?
The hypotenuse leg theorem states that two right triangles are congruent if the hypotenuse and one leg of one right triangle are congruent to the other right triangle's hypotenuse and leg side.
What is the hypotenuse leg theorem?
The hypotenuse leg theorem states that two right triangles are congruent if the hypotenuse and one leg of one right triangle are congruent to the other right triangle's hypotenuse and leg side.
The HL Postulate states that if the hypotenuse and leg of one right triangle are congruent to the hypotenuse and leg of another right triangle, then the two triangles are congruent.
Hypotenuse-Leg (HL) for Right Triangles. There is one case where SSA is valid, and that is when the angles are right angles. In words, if the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of a second right triangle, then the triangles are congruent.
Hence, if the hypotenuse leg theorem states that two right triangles are congruent if the hypotenuse and one leg of one right triangle are congruent to the other right triangle's hypotenuse and leg side.
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Please can you help me with this question?
1) The estimated probability of patrick flipping a head with his coin is; 0.45
2) The margin of error for Patrick's estimated probability is; 0.218
3) The confidence interval for the chance of flipping a head with his coin is; CI = (0.232, 0.668)
No, the 95% confidence interval does not contain 50% as a probability, so it will be illogical to think that Patrick's lucky coin has a probability different from 0.5
How to find the confidence interval for proportions?We are given;
Number of trials; n = 20
Number of successful outcomes; x = 9
Thus; Proportion; p^ = x/n = 0.45
Now, the formula for the confidence interval of proportions is;
CI = p^ ± z√(p^(1 - p^)/n)
where;
z√(p^(1 - p^)/n) is margin of error
1) Probability of Patrick flipping a head with his lucky coin is;
p^ = x/n = 9/20 = 0.45
2) The margin of error is from the formula;
z√(p^(1 - p^)/n)
z for 95% confidence level is 1.96. Thus'
E = 1.96√(0.45(1 - 0.45)/20)
E = 0.218
3) Confidence interval is;
CI = 0.45 ± 0.218
CI = (0.232, 0.668)
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Multiply and write a fraction or mixed numbers in its simplest form
2/5 x 6/7
The graph of a piecewise function, f(x), is depicted above. Find its equation:
The function of piecewise graph shown in the figure is,
f(x) = {y = 6 for x < -5
{ [tex]y = -\frac{19}{9}x-\frac{5}{9}[/tex] for -5 ≤x < 5
{ y = 8/5x -14 for x ≥ 5
What is piecewise function?
A piecewise-defined function in mathematics is a function with several sub functions, each of which has a certain interval in the domain for which it is applicable. Piecewise definition is a method of expressing the function, not a property of the function.
From graph we can see that the first function is a line y = 6
Hence, f(x) = {y = 6 for x < -5}
Now to find the equation of second function.
From graph we get two points (-5, 10) and (4, -9).
First to find the slope
[tex]m = \frac{-9-10}{4+5} = \frac{-19}{9}[/tex]
Now to find the equation of line, using slope point form
[tex]y - 10 = \frac{-19}{9} (x-(-5))\\y-10=-\frac{19}{9}x-\frac{95}{9} \\ y=-\frac{19}{9}x-\frac{95}{9} + 10\\y = -\frac{19}{9}x -\frac{5}{9}[/tex]
So, f(x) = { [tex]y= -\frac{19}{9}x-\frac{9}{5}[/tex], for -5 ≤ x < 5}
Now to find the equation of third line.
From graph we get two points (5, -6) and (10, 2).
First to find the slope of the line
[tex]m = \frac{2-(-6)}{10-5} = \frac{8}{5}[/tex]
Now to find the equation of line, using slope point form
[tex]y-(-6)=\frac{8}{5}(x-5)\\ y+6=\frac{8}{5}x-8\\ y = \frac{8}{5}x - 14[/tex]
So, f(x) = {[tex]y = \frac{8}{5}x-14[/tex], for x ≥ 5}.
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how to find the degree of a polynomial in factored form
The degree of a polynomial in factored form is the number of zeros or roots of that polynomial.
Given:
Degree of a polynomial:
Degree is the highest or the greatest power of a variable in a polynomial equation.
ex : 2x^2 + 2xy^2
Degree = 3
Degree of a polynomial in factored form:
Degree of a polynomial in factored form is the number of zeros or roots of that polynomial.
Example:
= (x-1) (x-2) (x-3)
number of roots = 3
Degree = 3
= (y-5)(y+3/2)(y-4)(y+1)
number of roots = 4
Degree = 4
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Mia is 1.65 meters tall. At 3 p.m., she measures the length of a tree's shadow to be
26.45 meters. She stands 21.4 meters away from the tree, so that the tip of her
shadow meets the tip of the tree's shadow. Find the height of the tree to the nearest
hundredth of a meter.
The height of the tree to the nearest hundredth of a meter is 8.64 meters
What are equivalent ratios?"Two or more ratios that reflect the same relation or comparison of numbers are known as equivalent ratios," according to the definition of the equivalent ratio in mathematics. The idea of corresponding fractions is comparable. The term "proportion" also refers to the equivalence of two ratios. Even if the values of the antecedent and the consequent are different, if we simplify them, we will still arrive at the same value.
How to solve?
Mia's height=1.65 m
Tree's equivalent height=26.45m
Mia's height w.r.t. the tree's shadow=26.45-21.40 =5.05m
Ratio of the equivalent height w.r.t original height=5.05:1.65 =3.06
Tree's original height= tree's equivalent height: ratio of Mia's height
= 26.45:3.06 =8.64m
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Can fractions be equivalent if
they have different denominators.
How so? (Give
Give an Exempla
or explain
to show your reasoning.)
Answer: Equivalent fractions are two or more fractions that are all equal even though they have different numerators and denominators. For example, the fraction 1/2 is equivalent to (or the same as) 25/50 or 500/1000.
*(This is not my work)*
Step-by-step explanation:
Line a is parallel to line b. If the
measure of 47 is 114°, what is the
measure of <1?
21
34
65
114 78
Answer:
66 degrees
Step-by-step explanation:
By the Corresponding Angles Theorem, Angle 7 is equal to Angle 2. This means that the measure of Angle 2 is 114.
Since Angle 1 is supplementary to Angle 2:
[tex]114 + x = 180\\x = 66[/tex]
Angle 1 is 66 degrees
I6
Researchers measured the data speeds for particular smartphone carrier at 50 airports. The highest speed measured was
75.5 Mbps. The complete list of 50 data speeds has a mean of ) 15.59 Mbps and a standard deviation of s = 23.85 Mbps.
What is the difference between carrier's highest data speed and the
mean of all 50 data speeds?
b. How many standard deviations is that [the difference found in part (a)]?
. Convert the carrier's highest data speed to a z score.
d. If we consider data speeds that convert to z scores between -2 and 2 to be neither significantly low nor significantly high,
is the carrier's highest data speed significant?
Answer:
66 es pero que te ayude ■■♤♤
What should be the remainder of the polynomial function for the divisor to be a factor?
Answer:
zero
Step-by-step explanation:
You want to know the remainder of the polynomial function for the divisor to be a factor?
DivisionA divisor is a factor of the dividend in any division problem if and only if the remainder is zero (0).
The divisor will be a factor of a polynomial function if division of the function by that divisor has a remainder of zero.
How do you make an addend?
We can make addend just by adding a number to another number.
What is addend?
Addends in math can be defined as the numbers that we add together to get a sum. The numbers you use in addition are called addends; in multiplication, the analogous term is a factor. If you add 7 to 112, the 7 is an addend, and the second number is an augend, though you're unlikely to hear anyone other than a math teacher use either of these phrases. Addere, which means "to add to, join, or attach," is the Latin root of the word addend.
Any number that is added to another is referred to as an addend in mathematics. When you add 10 to 15, 10 is the addend. An addend can alternatively be referred to as a summand.
So in example 15 is an addend of 10.
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Question 3 (2 points)
Find the area of the composite figure. Show work to get bonus points.
The area of the shaded portion of the composite figure could be easily 25*25 - 1/2*13*10 that is 625 - 65 = 560 feet
What is meant by the term Area?When referring to a two-dimensional space or points, in mathematics, the term "area" is used. It refers to a region's or a flat object's size, such a square or rectangle. The area of a form is determined in geometry by dividing the length by the breadth. For example, the area of a square with a side length of 4 units is 4 x 4 = 16 square units. Square units, such as square inches, square feet, or square meters, are used to measure area. Triangles (1/2 x base x height), circles ( x radius squared), and trapezoids (1/2 x (base 1 + base 2) x height) are other basic geometric forms with associated area calculations.
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Determine the rate of change.
The rate of change of the table is -500
How to determine the average rate of changeThe average rate of change of a function, graph, table or ordered pair is simply the slope of the relation
The function is represented by the table of values
The interval of the function are the x values
So, we make use of x values
x = 0 and x = 2
Start by calculating f(0) and f(2)
From the table, we have
f(0) = 30000
f(2) = 29000
So, the average rate over these intervals is calculated as:
Average rate = [f(2) - f(0)]/[2 - 0]
Substitute known values
Average rate = [30000 - 29000]/[0 - 2]
Simplify
Average rate = -500
Hence, the rate of change is -500
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Gloria is preparing to visit her grandmother in Florida and needs to buy some new clothes for the trip. She buys 3 t shirts and pays $48
How much would she pay for 1 t shirt?
How much would she pay for 5 t shirts?
Answer:
Step-by-step explanation: How much is 1 t shirt
(a)In a certain board game, players spin a spinner to determine how many spaces they advance. The odds in favor of advancing five spaces are 3/10. Find the probability of advancing five spaces.
(b)Ravi has a box of candies with different flavors. He will randomly choose one piece of candy. The probability that he chooses a strawberry-flavored piece is 6/19. What are the odds against him choosing a strawberry-flavored piece?
The probability of advancing five spaces is 0.2307.
Given that, the odds in favor of advancing five spaces are 3/10.
What is the probability?Probability can be defined as the ratio of the number of favourable outcomes to the total number of outcomes of an event.
The probability of advancing five spaces can be obtained as:
P =Odds/1+Odds
= [tex]\frac{\frac{3}{10} }{1+\frac{3}{10} }[/tex]
= [tex]\frac{\frac{3}{10} }{\frac{13}{10} }[/tex]
= 3/13
= 0.2307
Therefore, the probability of advancing five spaces is 0.2307.
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What is the congruent of SAS?
Answer:
According to the SAS ( Side Angle Side ) rule, two triangles are said to be congruent if any two sides and any angle between the sides of one triangle are equal to the equivalent two sides and angle between the sides of the other triangle.
Step-by-step explanation:
What is congruent Figure ?Two figures are said to be "congruent" if they can be placed exactly over one another.
According to the SAS ( Side Angle Side ) rule, two triangles are said to be congruent if any two sides and any angle between the sides of one triangle are equal to the equivalent two sides and angle between the sides of the other triangle.
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someone pls help me m = -0.5d + 5
Answer:
Step-by-step explanation:
1) Subtract 5 from both sides.
[tex]m-5=-0.5d[/tex]
2) Divide both sides by -0.5.
[tex]-\frac{m-5}{0.5} =d[/tex]
3) Switch sides.
[tex]d=-\frac{m-5}{0.5}[/tex]
Thank you,
Eddie
A
What is the algebraic expression for
"the quotient of an unknown
quantity and three"?
n/3
B
n-3
C
n.3
Answer: A
Step-by-step explanation:
The quotient is the result of the division between two numbers.
Answer:
n/3
Step-by-step explanation:
When you divide you get a quotient.
n divided by 3 will equal a quotient.
for a fishing trip, debra is going to choose lures to put in her tackle box. she has 4 lures that are jigs and 9 that are spinnerbaits. In how many waits can she choose 6 lures if more than 4 must be spinnerbaits?
Answer:
1680
Step-by-step explanation:
Let
f(x)={x2+2xx+1if x≤−1if x>−1.
Evaluate the following:
1. f(−7) =
2. f(−1) =
3. f(0) =
Answer: [tex]35, -1, 1[/tex]
Step-by-step explanation:
[tex]-7 \leq -1 \implies f(-7)=(-7)^2 +2(-7)=35\\\\-1 \leq -1 \implies f(-1)=(-1)^2 +2(-1)=-1\\\\0 > -1 \implies f(0)=0+1=1[/tex]
Finding the multiplier to give a final amount after a percentage increase or decrease
With percent increase or decrease situations, you have to consider the starting point as being 100%. So if the account increased by 27%, it's now 100% + 27% or 127% of it's original value.
As a decimal, 127% = 1.27. So 1.27 is your multiplier in this example.
And 1.27 • 7600 = 9652, which is the ending balance.
This gets the same result as finding 27% of 7600 and adding it back on to 7600, but does it more efficiently.
What is 1 * 2 * 3 * 4 * 5 all the way to 100?
9.332622e+157 or 93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000
What is Factorial?
The product of all positive integers less than or equal to a given positive integer, indicated by that integer plus an exclamation point, is known as Factorial in mathematics.
The approximate value of 100! is 9.3326215443944E+157.
The number of trailing zeros in 100! is 24.
The number of digits in 100 factorial is 158.
The factorial of 100 is calculated, through its definition, this way:
100! = 100 • 99 • 98 • 97 • 96 … 3 • 2 • 1
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graph the exponential function y52x
The graph of exponential function y = 5.2^x
exponential function in the form y = ab^x + c
Exponential function:
An exponential function is a mathematical function of the following form: f ( x ) = a^x. where x is also a variable, and a is a constant called the base of the function.
where
a is the initial y - intercept.
b is the constant ratio.
c is the horizontal asymptote.
So, in this problem, we have:
constant ratio = 2
y-intercept at y = 5
horizontal asymptote at y = 0
The graph is in the image uploaded.
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What are the coordinates of B′ after the pentagon is rotated 90° about the origin?
Assuming that the rotation is anticlockwise (as it is not defined) the coordinates of B after the rotation are (-5, 1), so the correct option is C.
What are the coordinates of B' after the rotation?If the pentagon is rotated 90°, then all the vertices are also rotated 90° about the origin.
Here we don't know if the rotation is clockwise or anticlockwise, so we assume it is anticlockwise, as this is the standard rotation.
The orignal coordiates of point B are (1, 5)
This is on the first quadrant, a rotation of 90° anticlockwise will:
Interchange the x-value and the y-value.Add a negative sign to the new x-value.So we will go from a point (x, y) to (-y, x)
Then the new coordinates of B' are (-5, 1)
Thus, the correct option is C.
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The prices of two radios are in the ratio x : y
When the prices are both increased by £20, the ratio becomes 5:2
When the prices are both reduced by £5, the ratio becomes 5:1
Express the ratio x : y in its lowest terms.
Prices of two ratios in the ratio is 4 : 1.
What do you mean by ratio?The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
Ratios can be classified into two types. One is part to part ratio and the other is part to whole ratio. The part-to-part ratio denotes how two distinct entities or groups are related.
For example, the ratio of boys to girls in a class is 12: 15, whereas, the part-to-whole ratio denotes the relationship between a specific group to a whole.
For example, out of every 10 people, 5 of them like to read books. Therefore, the part to the whole ratio is 5: 10, which means every 5 people from 10 people like to read books.
Let us assume price of radios are x and y
According to the question
[tex]\frac{x + 20}{y+20} =\frac{5}{2}\\2x+40=5y+100\\2x-5y=60[/tex]-------------------------- eq(1)
and
[tex]\frac{x-5}{y-5} =\frac{5}{1}\\5y-x = 20[/tex]
5y-x = 20
multiplying this equation by 2
we get
10y-2x = 40 ------------------ eq(2)
adding eq 1 and 2
we get
5y=100
y=20
solving further we get x=80
Thus the ratio is 4 : 1.
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y=3x-7 how do i graph it using form y=mx
Answer: See attached.
Step-by-step explanation:
This slope-intercept form equation shows us that there is a y-intercept of -7. This means that (0, -7) will be a point on the line. Next, we have a slope of positive 3. This means we will count up three units, right one unit, plot a point. Then we repeat.
Answer:
start at the y-intercept, plot some points using the slope, then connect them using a straight line.
Step-by-step explanation:
Slope-Intercept FormGenerally you'll have an equation in slope-intercept form, which is denoted as: [tex]y=mx+b[/tex]
This is a really useful form for a couple of reasons, and it has two key features. Firstly, the "m" represents the slope of the linear equation.
This makes sense the definition of slope is: [tex]\frac{\text{change in y}}{\text{change in x}}[/tex]
and we can generally define the points:
[tex]\text{at x = 1, y = }m(1)+b\implies m+b\\\text{at x = 2, y = } m(2)+b\implies m + m + b\\\text{at x = 3, y = }m(3) + b\implies m + m + m +b\\\text{and so on...}[/tex]
as the x value increases by 1, the change in y is the "m" value, we have one more "m" than the previous x-value, so the slope is the "m" value, which is the coefficient of the x variable.
The second key feature of slope-intercept form is the y-intercept, which is represented as "b" in this form. This also makes sense because the y-intercept is simply when the x-value is zero, and if you plug in x=0 into the equation, you're only left with the "b" value
Graphing the EquationKnowing these two things we can analyze the equation given:
[tex]y = 3x-7[/tex]
since it's given in slope-intercept form, we know that slope = 3, and y-intercept = -7. We immediately know one point, which is the y-intercept, since the x-value is going to be zero at the y-intercept, so one point on the graph is: (0, -7)
now from this point we can draw the graph by going to the right one, and up three, by definition of a slope (as x increases by 1, the y-value increases by 3).
We can do something similar on the left side, except instead of right one and up three, we go left one, and down three. You may be asking why down three? Well as you go right one, you go up three, this means if you compare the previous point to the new point, the previous point is down three compared to the new point (which is to the right one), so if you were to go back, you would be going left one and down three.
Now from these points you can do the same thing to extend the line a bit, and since it's a linear equation you can connect them using a straight line.
I also attached a graph from desmos to illustrate what I was saying a bit and also show the graph.
12. The hourly temperatures at Eppley Airfield Airport in Omaha, Nebraska, in May 2014 are approximately normally distributed with a mean of 64.4˚F and a standard deviation of 12.2 ˚F. The z-score of the lowest temperature is −2.49. What is the lowest temperature? Round your result to the one’s place.
The lowest temperature with a z score of of -2.49 is 24.0 ˚F
How to find the temperature with a z score of -2.49Z scores, measures the amount of standard deviation sample X is from mean. the formula is below
z = (X - μ) / σ
Definition of variables
mean, μ = 4.4˚F
standard deviation, σ = 12.2 ˚F
X = lowest temperature
z = -2.49
substituting into the formula
-2.49 = (X - μ) / σ
-2.49 = (X - 64.4) / 12.2
-2.49 * 12.2 = X - 64.4
-30.378 + 64.4 = X
X = 34.022
X = 34.0 (to one decimal place)
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2. A standard package of pencils contains 24
pencils.
# of
packages
# of
pencils
127
?
1
?
3
?
4
?
6
1
2
?
Answer:
12, 24,72,96,156
Step-by-step explanation:
1/2 package would be 1/2 of 24 which is 12
21 x 24 = 24
3 x 24 = 72
4 x 24 = 72
We know that 3 packages is 72 so 6 packages is double that at 144. We also know that have a package is 12. so 144 + 12 = 156
Answer:
1/2 package = 1/2 of 24 = 12 pencils
1 package = 24 pencils
3 packages = 24*3 = 72 pencils
4 packages = 24*4 = 96 pencils
6 1/2 packages = 24*6.5 = 156
Step-by-step explanation:
1 package = 24 pencils
1/2 package = 1/2 of 24 = 12 pencils
1 package = 24 pencils
3 packages = 24*3 = 72 pencils
4 packages = 24*4 = 96 pencils
6 1/2 packages = 24*6.5 = 156
Find the equation of the line that passes through the point (3, 28) and has slope 11. Simplify your equation to the following form.
=11+____
Answer:
y=11x-5
Step-by-step explanation:
y=mx+b
28=11(3)+b
28=33+b
b=-5
y=11x-5
Journee and her brother were arguing over who was responsible for the dishes. Journee explained to her brother that she had washed the dishes the last three nights
Her brother replied, "Sure, but that's just because you're a nerd with nothing better to do." Which logical fallacy has Journee's brother used?
O Ad hominem
Oad populum
Answer: Ad Hominum
Step-by-step explanation:
It just attacks the person.