Answer:
9 times 20 is equally to 180 minutes
Answer:
f=-1/20t+12
Step-by-step explanation:
khan
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What are the coordinates of each point after a reflection over the y-axis.
A (-2,5)
C (-9, 3)
1
2
B (-3, 1)
3
Answer:
2,5; 9,3; 3,1 i think hope it helps :)
Step-by-step explanation:
When crossing over the y axis the x values change their sign ex. -2,5 --> 2,5
a + 1/a= p find a^3 + 1/a^3
(1) p^3 + 3p
(2) 3p
(3) p^3 - 3p
9514 1404 393
Answer:
(3) p^3 -3p
Step-by-step explanation:
(a +1/a) = p . . . . . . . given
(a +1/a)^3 = p^3 . . . . . . . . cube both sides
a^3 +3a^2(1/a) +3a(1/a)^2 +(1/a)^3 = p^3 . . . . . . expand
(a^3 +1/a^3) +3(a +1/a) = p^3 . . . . . . . . . . simplify, group
(a^3 +1/a^3) +3p = p^3 . . . . . . . . . . substitute p for a+1/a
(a^3 +1/a^3) = p^3 -3p . . . . . . subtract 3p from both sides
TRIANGLES please help!! :)
Answer:
A
Step-by-step explanation:
First, the list of congruence theorems are:
SSS
SAS
ASA
AAS
HL
SSA is not on the list, so we can cross that out
Next, ASA implies that two angles are congruent, but we only know that one pair of angles (the right angles) are congruent, so we can cross that out
After that, the angle is not connecting the congruent sides, so D is not an option
Finally, we know that the longest sides (AD / AC) are congruent to each other, one other pair of legs/sides are congruent, and the triangles are both right triangles. Therefore, we can apply HL here
he manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known to be 0.5 minute. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes. Refer to Exhibit 9-2. At a .05 level of significance, it can be concluded that the mean of the population is _____. a. significantly less than 3 b. significantly greater than 3.18 c. significantly greater than 3 d. not significantly greater than 3
What are ways using coordinate geometry, that I could determine that this is a trapezoid?
One method to see it's a trapezoid is to find the slope of lines BC and AD.
The slope formula is
m = (y2-y1)/(x2-x1)
You should find that BC and AD both have the same slope (of -1), so that means the lines are parallel. That proves we have a trapezoid.
-----------------------
To prove this trapezoid is isosceles, you can use the distance formula
[tex]d = \sqrt{ \left(x_1-x_2\right)^2 + \left(y_1-y_2\right)^2}[/tex]
to find the lengths of AB and CD (the two non-parallel sides). You should find that AB = CD.
Because AB and CD are horizontal and vertical respectively, this means you can simply count out the spaces to find that AB and CD are 3 units each. For any other rotated version of this trapezoid, use the distance formula instead.
wat iz dis bul crup
i made the hardest math problem, lets see if you can figure it out
p.s. ingore the line right aside from the 7.
7×(15+7-4+(x+y×38))^3 when x = 4 and y = 9
7×(15+7-4+(4+9×38))^3
=> 7×(15+7-4+(4+342))^3
=> 7×(15+7-4+346)^3
=> 7×364^3
=> 7×48228544
=> 337599808
What is the area of the parallelogram whose base is 50 mm long and whose height is 30 mm?
Answer:
A=1.5×10-3m² (This is the answer)
Step-by-step explanation:
Unit Conversion:
b=0.05m
h=0.03m
Solution
A=bh=0.05·0.03=1.5×10-3m²
(These here are just some add ins)
Please help me with this
Answer:
108
Step-by-step explanation:
Surface area = total area of net
The net is made up of 2 unique shapes
A square with a side length of 6
The area of a square can be calculated by squaring the side length
6^2 = 36
The area of the square = 36
The net is also made up of 4 triangles
The triangles have a base length of 6 and a height of 6
The area of a triangle can be calculated by using the formula A = (bh) / 2
Where b = base length and h = height
If the triangles have a base length of 6 then b = 6 and if they have a height of 6 then h = 6
So A = 6*6/2
6 * 6 = 32
32/2 = 18
We then multiply that by 4 to get the area of all four triangles
18 * 4 = 72
Finally we add the areas together
72 + 36 = 108
The surface area is 108
The graph of a function f(x) is shown below:
What is the domain of f(x)? (1 point)
integers from - 1< x <2
integers from -3 < y < 3
integers from -3 < y <3
integers from -1 < x < 2
Answer:
It's all integers x such that -1<=x<=2.
Step-by-step explanation:
The domain is the x values for which the relation exists.
Lets read from left to right.
First point I see from left exists at x=-1, next one at x=0, then x=1, and finally at x=2.
So it's all integers x such that -1<=x<=2.
*<= means less than or equal to
Point C is the center of dilation. Line segment B A is dilated to create line segment B prime A prime. The length of C A is 4. The length of A A prime is 16. What is the scale factor of the dilation of line segment BA?
Answer:
Step-by-step explanation:
Given
See attachment for figure
[tex]CA = 4[/tex]
[tex]CA' = 16[/tex]
Required
The scale factor (k)
Since point C is the center of dilation, the scale factor (k) is calculated using:
[tex]k = \frac{CA + CA'}{CA}[/tex]
So, we have:
[tex]k = \frac{4+16}{4}[/tex]
[tex]k = \frac{20}{4}[/tex]
[tex]k = 5[/tex]
Answer:
The actual answer is D
Step-by-step explanation:
(5)
I got 100%
Find the sum of all the integers from 1 to 100 that are not multiples of 7
Answer:
4343
Step-by-step explanation:
To find multiple of 7 from 1 to 100,
Take the quotient of 100/7=14
n=100 (number of terms)
n=100-14 (Without Multiple of 7=number of terms - multiple of 7)
=>n=86
Sum of 1 to 100 => Sn = n/2(a + an)
=> Sn = 86/2(1+100)
=> Sn = 43(101)
=> Sn = 4343
Use the properties of logarithms to prove log, 1000 = log2 10.
Given:
Consider the equation is:
[tex]\log_81000=\log_210[/tex]
To prove:
[tex]\log_81000=\log_210[/tex] by using the properties of logarithms.
Solution:
We have,
[tex]\log_81000=\log_210[/tex]
Taking left hand side (LHS), we get
[tex]LHS=\log_81000[/tex]
[tex]LHS=\dfrac{\log 1000}{\log 8}[/tex] [tex]\left[\because \log_ab=\dfrac{\log_x a}{\log_x b}\right][/tex]
[tex]LHS=\dfrac{\log (10)^3}{\log 2^3}[/tex]
[tex]LHS=\dfrac{3\log 10}{3\log 2}[/tex] [tex][\because \log x^n=n\log x][/tex]
[tex]LHS=\dfrac{\log 10}{\log 2}[/tex]
[tex]LHS=\log_210[/tex] [tex]\left[\because \log_ab=\dfrac{\log_x a}{\log_x b}\right][/tex]
[tex]LHS=RHS[/tex]
Hence proved.
4x2+16x+8=0 by completing the square
Answer:
Add
8
to both sides of the equation.
2
x
2
+
16
x
=
8
Divide each term by
2
and simplify.
Tap for more steps...
x
2
+
8
x
=
4
To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of
b
.
(
b
2
)
2
=
(
4
)
2
Add the term to each side of the equation.
x
2
+
8
x
+
(
4
)
2
=
4
+
(
4
)
2
Simplify the equation.
Tap for more steps...
x
2
+
8
x
+
16
=
20
Factor the perfect trinomial square into
(
x
+
4
)
2
.
(
x
+
4
)
2
=
20
Solve the equation for
x
.
Tap for more steps...
x
=
±
2
√
5
−
4
The result can be shown in multiple forms.
Exact Form:
x
=
±
2
√
5
−
4
Decimal Form:
x
=
0.47213595
…
,
−
8.47213595
…
Step-by-step explanation:
What is the distance from W to X?
Answer:
The answer is 35 miles.
Step-by-step explanation:
Let's assume that the distance from W to Y is x miles
Distance from W to X is 70 % of x =0.7*x
Given distance from X to Y is 15 miles.
x-15=0.7x
x-0.7x=15
0.3x=15
x=15/0.3
x=50miles
Thus the distance from W to Y is 50 miles and the distance from W to X is 50-15=35 miles
A rectangular swimming pool. Measures 16m by 20m. A path of uniform width is built around the pool. If the area of path is 100m^2, find the width of the path, giving your answer correct to 2 decimal places.
Answer:
not sure but good luck
Step-by-step explanation:
:))))
Find the angles of the triangles if they are proportional to the following: 3,4,5
WILL GIVE BRAINLIEST IF UR ANSWER IS RIGHT
Let the proportion be 3x, 4x and 5x .
We know that sum of all angles of a triangle measures 180°.
So, keeping the values equals to 180°.
⇒ 3x + 4x + 5x = 180°
⇒ 12x = 180°
⇒ x = 180°/12
⇒ x = 15°
Now, finding the each angle measure.
⇒ 3x = 3 × 15 = 45°
⇒ 4x = 4 × 15 = 60°
⇒ 5x = 5 × 15 = 75°
Hence, the measure of each angle is 45°, 60° and 75° respectively.
❒ Required Solution:
It is given that the three angles of the triangle are proportional to 3,4,5. And we are here to find the three angles with the help of the angle sum property (Sum of the angles of a triangle = 180°). So, using this property we can find all the angles.So, Let's assume the angles as 3x, 4x and 5x.
❍ According to the question :
[tex]\\ \tt \implies \: 3 x+ 4x + 5x = 180{}^{ \circ} \\[/tex]
[tex]\\ \tt \implies \: 12 x = 180{}^{ \circ} \\[/tex]
[tex]\\ \tt \implies \: x = \frac{180{}^{ \circ} }{12} \\ [/tex]
[tex]\\ \implies \tt \: x = 15{}^{ \circ} [/tex]
Hence,
[tex]\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \circ \: \: \: \: \tt \:1st \: \: \: angle \: \: \: \: \: = 3x=3 \times 15=45{}^{\circ} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \circ \: \tt \:2nd \: \: \: angle \: \: \: \: \: = 4x=4\times 15=60{}^{\circ} \: \: \: \: \: \\ \\ \circ \: \: \: \: \tt \:3rd \: \: \: angle \: \: \: \: \: =5 x=5\times 15=75 {}^{\circ} \: \: \\ \\[/tex]
❒ V E R I F I C A T I O N :
Sum of the angles of the triangle = 180°
[tex]\\ \tt \implies \: 3 x + 4x + 5x = 180{}^{ \circ} [/tex]
[tex]\\ \tt \implies \: 45 {}^{ \circ} + 60{}^{ \circ} + 75{}^{ \circ}= 180{}^{ \circ} [/tex]
[tex]\\ \tt \implies \: 180{}^{ \circ} = 180{}^{ \circ} [/tex]
[tex]\\ {\quad { \quad{ \quad{ \textbf{ \textsf{L.H.S = R.H.S}}}}}}[/tex]
what is the answer for 14a³ - 22a we have to Factorise it
Answer: 2a (7a² - 11).
Answer:
Step-by-step explanation:
Both numbers are even. You can take out a 2.
14/2 = 7
22/2 = 11
There is a limitation of one a on the 22. But you can take out 1 a
a^3/a = a^2
Combing you get
Answer: 2a(7a^2 - 11)
This is the reverse distributive property.
plz help me to do this
Because of a manufacturing error, three cans of regular soda were accidentally filled with diet soda and placed into a 12-pack. Suppose that two cans are randomly selected from the 12-pack. (a) Determine the probability that both contain diet soda. (b) Determine the probability that both contain regular soda. Would this be unusual
Answer:
1 /22
6/11
Step-by-step explanation:
Total number of soda = 12
Number of diet soda in pack = 3
Number of regular soda = 12 - 3 = 9
Suppose selection is done without replacement ;
Recall : probability = required outcome / Total possible outcomes
P(selecting diet soda on 1st pick) = number of diet soda / total Number of soda in pack = 3 / 12
Diet soda left = 3 - 1 = 2
Total sodas left in pack = 12 - 1 = 11
P(selecting diet soda on 2nd pick) = 2 /11
Probability(diet soda on both picks) =
3/12 * 2/11 = 6 / 132 = 1 / 22
B.)
P(selecting regular soda on 1st pick) = number of regular / total Number of soda in pack = 9 / 12
Diet soda left = 9 - 1 = 8
Total sodas left in pack = 12 - 1 = 11
P(selecting regular soda on 2nd pick) = 8 /11
Probability(regular soda on both picks) =
9/12 * 8/11 = 72 / 132 = 12 / 22 = 6/11
x-3(x-2)=3(2x) Solution
Step-by-step explanation:
x^2-2x-3x+6=6x
x^2-5x+6=6x
x^2+6=6x+5x
x^2+6=13x
x^2-13x=6
x(x-13)=6
Find the coordinates of point X that lies along the directed line segment from Y(-8, 8) to T(-15, -13) and partitions the segment in the ratio of 5:2.
A. (-11.5, -2.5)
B. (-13, -7)
C. (-5, -15)
D. (-23, -5)
Can someone help me with this math homework please!
Answer:
You have 120 bottles of Cola and 120 bottles of Sprite.
You can exchange 3 empty Cola bottles for a new bottle of Sprite.
You can exchange 4 empty Sprite bottles for a new bottle of Cola.
You can borrow empty bottles, but must return them in the end.
What is the maximal number of bottles of drink that you can drink? Prove the optimality of your result.
As this is a puzzle, please give short and clever answers rather than tedious bruteforce calculations.
PLEASE I NEED HELP!!
Find the value of x
Answer:
y=4sqrt 3 X=8sqr 3
Step-by-step explanation:
4/y=y/12 y^2=48 y= sqrt 48= sqrt 4 * sqrt 3 * sqrt 4 = y = 4sqrt 3 then X
(4sqrt3)^2+144=x^2
48+144=192
sqrt 192
8sqrt3
Which of the following statements does not prove that ABCD is a parallelogram.
Given: A(-4, 7), B(3,0), C(2,-5) and D(-5, 2).
Answer:
answer A
Step-by-step explanation:
A=(-4,7)
C=(2,-5)
midpoint = U=((-4+2)/2, (7+(-5))/2)=(-1,1))
B=(3,0)
D=(-5,2)
midpoint = V=((3+(-5))/2,(0+2)/2)=( -1,1)
Diagonals have the same middle, the quadrilater is a parallogram.
please can someone help me wit this question
At what point do the lines y = x - 8 and y = -3 + 16 interact?
(1) (4, -4)
(2) (11, 3)
(3) (0, 16)
(4) (6, -2)
thank you to anyone who answers :)) !
what is the value of x?
Explanation:
The adjacent angle to the right of the (6x+1) angle is 180-(6x+1). Simply subtract it from 180 to get its supplementary counterpart.
The three inner angles of any triangle must add to 180, so,
(inner angle 1) + (inner angle 2) + (inner angle 3) = 180
[ 180-(6x+1) ] + (79) + (2x+10) = 180
180 - 6x - 1 + 79 + 2x + 10 = 180
(-6x+2x) + (180-1+79+10) = 180
-4x+268 = 180
-4x = 180 - 268
-4x = -88
x = -88/(-4)
x = 22
Answer:
x = 22
Step-by-step explanation:
2x + 10 + 79 = 6x + 1
Think alternate interior angles
2x + 10 + 79 makes up one of the alternate interior angles
6x + 1 is the other.
Combine like terms.
Subtract 2x both sides.
Subtract 1 from both sides.
Divide by 4 both sides.
A jar contains four yellow balls, six red balls, and eight blue balls. One ball is selected at random.
What is the probability that it is yellow?
Answer:
Step-by-step explanation:
We are trying to see how likely we are to pick a yellow ball. So out of the total number of balls, we have 4 yellow balls (numerator). The total number of balls is 18 and so the probability of picking a yellow ball is 4/18
Answer:
4/18
Step-by-step explanation:
1. you would first take all the number of colored balls and add them together
2. next, you would take the number of yellow balls/ to the total number of balls.
tan(3x/7 - π/5)= -√3/3
Answer:
x is 7·π/30
Step-by-step explanation:
The given equation is presented as follows;
tan(3·x/7 - π/5) = (-√3)/3
We have that arctan (√3)/3 = π/6, and tangent of an angle is negative in the second quadrant, we get;
arctan (-√3)/3 = -π/6 = 5·π/6
∴ tan(-π/6) = -√3/3 = tan(3·x/7 - π/5)
-π/6 = 3·x/7 - π/5
x = (-π/6 + π/5) × 7/3 = (6·π - 5·π)/30 × 7/3 = π/30 × 7/3 = 7·π/30
x = 7·π/30
i need the answer for this 2120 = 18x + 320
Answer:
100
Step-by-step explanation:
we need to swap sides so we take the 320 and put it in the other side but in negative form and that comes out to 1800 and then we divide that by 18
Answer:
x = 100
Step-by-step explanation:
2120 - 320 = 1800
1800 ÷ 18 = 100
reciprocal of. 0×7/11
Answer:
it doesn't exist
Step-by-step explanation:
the expression 0×7/11 is equivalent to 0. 1/0 isn't possible, so its reciprocal doesn't exist.
