Answer: If the train moves a constant speed of 8 miles for every 6 minutes then if the time where to be 3 minutes you would have to divided 2 and 8 because the time was split in half you would also have to split the 8 as well. Now if the time was 15 minutes you would have to add more since 6 got 9 more you will have to add 9 more to 8.
6 minutes = 8 miles
3 minutes = 4 miles
15 minutes = 17 miles
Hope this helps you :3.
The train will move 4 miles, 20 miles and 80 miles in 3 minutes, 15 minutes and 60 minutes respectively.
What is multiplication?Multiplication is mathematical arithmetic operation. It is also a process of adding same types of expression to some number of times.
Example - 2 × 3 means 2 is added three times or 3 is added 2 times.
Given, a train moves at a constant speed of 8 miles every 6 minutes.
That means in one minute,
= total number of miles / total time taken
= 8 /6
= 4/3 miles
Now, for 3 minutes means 3 times 4/3
= 3 x 4/3
= 4 miles
For 15 minutes,
= 15 x 4/3
= 20 miles
For 60 minute
= 60 x 4/3
= 80 miles.
Therefore, the train will move 4 miles, 20 miles and 80 miles in 3 minutes, 15 minutes and 60 minutes respectively.
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multiply. write the result in scientific notation. (2.3x10^1)(7x10^6)
[tex] (2.3 \times 10^1) \times (7 \times 10^6)[/tex]
[tex](2.3 \times 7) \times (1 {0}^{1} \times {10}^{6} )[/tex]
[tex]16.1 \times {10}^{1 + 6} [/tex]
[tex]16.1 \times {10}^{7} [/tex]
The product of the given numbers is 1.61 × 10⁸.
What is meant by Scientific Notation?Scientific notation is a way of writing a large number or small number with many digits in a simpler form using the power of 10.
For example, 30,000 can be written as 3 × 10⁴.
Given that,
We have to multiply the numbers (2.3 x 10¹) (7 x 10⁶).
The numbers in scientific notation uses exponents.
So we have to use the product rule of exponents here.
(2.3 x 10¹) (7 x 10⁶) = (2.3 × 7) × (10¹ x 10⁶)
= 16.1 × (10¹ x 10⁶)
We have the product rule, xᵃ . xᵇ = xᵃ⁺ᵇ
So the product is,
(2.3 x 10¹) (7 x 10⁶) = 16.1 × (10¹⁺⁶)
= 16.1 × 10⁷
= 1.61 × 10⁸
Hence the product in scientific notation is 1.61 × 10⁸.
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Could you answers the question?
A city has an elevation of –752 feet. Which statement describes the city’s elevation?
–752 above sea level
–752 below sea level
752 above sea level
752 below sea level
Answer:
752 bellow sea just did that
Answer:
Its 752 below see level!
Step-by-step explanation:
I am doing the assignment right now and got it right!, if you want can you guys mark brainliest that would help a lot!!
Which statement is correct using "is equal to" (=)?
Answer:
B) 6 boxes of 9 pineapples = a total of 54 pineapples.
Step-by-step explanation:
We have to multiply the number of pineapples by the number of boxes the options give.
A is not the correct answer.
[tex]4 * 8 = 36\\32\neq 36[/tex]
B is correct.
[tex]6 * 9 = 54\\54 = 54[/tex]
C is incorrect.
[tex]12 * 8 = 120\\96 \neq 120[/tex]
D is incorrect.
[tex]16 * 5 =90\\80\neq 90[/tex]
Your best option is B.
Brainilest Appreciated.
The point (-1,10) lies in which quadrant
Answer:
the second quadrant.
Step-by-step explanation:
Answer:
Look up a grid and find out. If you don’t know how to number them search that up too and tell you teacher he or she or they are failing you
Step-by-step explanation:
Ahah lol
3. A boat is travelling from Point C toward Point D, which is on the shoreline.
The shoreline is represented by the line through Point A and Point B.
Determine whether the path from C to D is perpendicular to the shoreline. A to B.
Justify your answer
A(0,7) B(8,-5) C(-3,-8) D(6,-2)
Answer:
Yes, lines CD & AB are perpendicular
Step-by-step explanation:
AB slope: y = -12/8x + 7
CD slope: y = 6/9x - 6
Once the slopes are simplified:
AB: -3/2
CD: 2/3
Hope this helps!
Find the mean, median, mode, and range of the data:
{17, 2, 16, 3, 13,5,7,8,9, 11, 5, 2, 1,20}
Answer:
median:8 mean:199 that is all i know i might be wrong
Step-by-step explanation:
help me please asap
Answer:
[tex]-\dfrac{11}{12}[/tex]
Step-by-step explanation:
[tex]\dfrac{\frac{5}{8}+\frac{3}{4}}{\frac{-2}{3}-\frac{5}{6}}[/tex]
Find common denominators:
[tex]\dfrac{\frac{5}{8}+\frac{6}{8}}{\frac{-4}{6}-\frac{5}{6}}=[/tex]
[tex]\dfrac{\frac{11}{8}}{\frac{-9}{6}}=[/tex]
[tex]\dfrac{11}{8}\cdot -\dfrac{2}{3}=-\dfrac{11}{12}[/tex]
Hope this helps!
Find the interquartile range (IQR) of the data plot below
Answer:
3.5
Step-by-step explanation:
0 1 1 3 3 3 4 5 7
median= 3
Q1= 1
Q3= 4.5
4.5-1= 3.5
Answer:3.5
0,1,1,3,3,3,4,5,7
A circular lake has a circumference of 24 miles. To the nearest square mile, what is the area of the lake?
15 square miles
46 spaure miles
183 square miles
452 square miles
46 sqaure miles.........
Answer:
46 square miles
Step-by-step explanation:
it me again I need help
Answer:
85%
Step-by-step explanation:
He hit it 17/20
We want that as a percent
Multiply by 5/5
17/20*5/5 = 85/100
Percent means out of 100
85%
Answer:
85
Step-by-step explanation:
P(hit) = 17/20 × 100
85%
Triangle XYZ is a right triangle.
Use the drop downs to determine the length of the legs of the right triangle.
What is the length of Side X Z?
What is the length of Size Y Z?
Answer:
What is the length of Side X Z?
✔ 5
What is the length of Size Y Z?
✔ 6
The length of side XZ is 5 units.
The length of side YZ is 6 units.
What is a triangle?A triangle is a 2-D figure with three sides and three angles.
The sum of the angles is 180 degrees.
We can have an obtuse triangle, an acute triangle, or a right triangle.
We have,
To find the length of side XZ, we can use the distance formula, which is:
[tex]d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}[/tex]
Substituting the coordinates of X (-2, 4) and Z (3, 4), we get:
[tex]d(XZ) = \sqrt{(3 - (-2))^2 + (4 - 4)^2}\\= \sqrt{5^2 + 0^2}\\= \sqrt{25}\\= 5[/tex]
The length of side XZ is 5 units.
To find the length of side YZ, we can again use the distance formula with the coordinates of Y (3, -2) and Z (3, 4):
[tex]d(YZ) = \sqrt{(3 - 3)^2 + (4 - (-2))^2}\\= \sqrt{0^2 + 6^2}\\= \sqrt(36)\\= 6[/tex]
The length of side YZ is 6 units.
Thus,
The length of side XZ is 5 units.
The length of side YZ is 6 units.
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Write a problem that could be modeled with y=200(0.9).
First, I need to decide what equation this is like.
I believe this is y=mx.
We know that x is typically the input, and m is the constant function.
Y is the output.
So the original function may have been y=200x.
The only difference is now we've been given something to apply to the equation, in place of x.
2. Imagine a cloning machine. Whatever you put in, you get a copy of, and the original thing you put in. Its function would be y=2x. Let's pretend we decided to put three things in; 3 would go where x is.
Y would be the result of 3 copies and their originals, or 2(3).
(6=2(3))
Now, when someone else decides to use the cloning machine, they may put any number in, but the only properties that will change are y and x, not m.
The function will remain y = 2x. Any number could go in place of x, and multiplying x by 2 will give you the y. As long as you have a different value for x, the y will never be the same.
3. So now we have an understanding of what it means, we see that we have been given an x value to insert; an input.
A more practical example could be someting with money. This won't be entirely realistic, because we are dealing with a fraction of a number and another large number.
4. I decided to go with flour. I wanted the 200 to represent pennies, or cents. Before I landed on this, I looked up the cost of flour per pound. I found that the average is .43 dollars, which isn't terribly close to two dollars. But maybe the flour is high quality, so we can stick with that.
5. Seeing that this equation, y=200x, means we are charging 200 cents, or two dollars, we can write a problem from here.
Sylvia is in charge of selling home-harvested flour from an organic farm. She charges two dollars per pound of flower. Today, her next-door neighbors hope to buy a ninth of pound of flour, and they insist on paying with pennies. How many pennies do they need to pay for their order?
Let me know if this helped, or if you have any questions!
what is the solution of this system of linear equations? y=2x-3 2x=y-3
a. infinitely many solutions
b. (0, -3)
c. (0,0)
d. no solution
Answer:
d. no solution
Step-by-step explanation:
y=2x-3
2x=y-3
y=2x+3
Since these are two distinct parallel lines (same slope), they will never meet. Hence, no solution
Answer:
No solution :)
Step-by-step explanation:
What is the mean absolute deviation of 24,30,36,42,48,54
Hey, I need some help with this:
Give an example of what an inverse operation is and how they are used in solving equations
Inverse operations are an operation that undoes each other. For example, addition and subtraction, multiplication and division, squares and square roots.
For example, we have the equation:
2 + 2 = 4
The inverse of this equation is:
4 - 2 = 2
Best of Luck!
A slice is made perpendicular to the base of a right rectangular pyramid through the vertex as shown below. What is the shape of the cross section? What is the area of the cross section? Explain with complete sentences and proper grammar.
Answer:
Shape: Triangle
Area: 27.5 cm
Step-by-step explanation:
Area formula for a triangle: b(base) x h(height) / 2
so, 5(11)/2 = 55/2= 27.5
help me fill in the blanks pleasee
Answers and Step-by-step explanations:
Let's look at the first row:
cost = _______ + _______ * (monthly payment)
The first blank should be the "down payment" because this is the initial, constant value that is paid. The second blank should be the "number of months" because this way, when multiplied by the actual amount each payment is (monthly payment), then we get the total amount paid during those months.
So, we have:
cost = (down payment) + (number of months) * (monthly payment)
Now for the second row, we just plug in numbers and variables:
335 = 50 + 6 * p
Finally, we can solve for p:
335 = 50 + 6p
6p = 285
p = $47.50
Answer:
Cost = down payment + no. of monthly payments × monthly payment
335 = 50 + 6 × p
285 = 6p
p = 47.5
‘‘3 more than the product of 7 and a number x is less than 24’’.
Write an inequality for the statement above . find the solution for x.
Answer:
the inequality is 3+7(x)<24
x=x < 3 2/7
Step-by-step explanation:
because...
3 + 7x < 26
7x < 23
x < 23/7
x < 3 2/7
True or false the focal length F is the directed distance from the vertex (h, k), to the focus of the parabola
Answer:
true
Step-by-step explanation:
can someone help with this please,, also explain if you can..
Answer:
story 1
Step-by-step explanation:
because it says 2 higher than -2 so -2+2 is 0
After a picnic, 5/12 of the cornbread is left over. Val eats 4/5 of the leftover cornbread. What fraction of the cornbread does Val eat? Enter your answer in simplest form.
Answer:
5/12 - 4/5 = -23/60. You can't simplify -23/60. Hope this is right
Step-by-step explanation:
4/5= 48/60
5/12 = 25/60
25/60-48/60= -23/60
HELP QUICK!! 25 POINTS AND BRAINLIEST!!! In circle V, r = 18 in.
What is the area of circle V?
a. 64
b. 36
c. 72
d. 324
If the measures of two angles add up to 90
Answer:
complementary angles
Step-by-step explanation:
If the measures of two angles add up to 90 then they are complementary angles
The graph of f(x) = (xl is reflected across the y-axis and
translated to the left 5 units. Which statement about the
domain and range of each function is correct?
Answer:
The range is different. (Last option)
Step-by-step explanation:
Since the graph was reflected, the range will change since it is no longer a minimum amount but a maximum amount that it will reach. The domain will continue to stay the same because the x values it will reach are still all real numbers.
Area and perimeter please
Answer:
185.68 for perimeter
1652.16 for area
Step-by-step explanation:
Please give me brainliest i hope you do well.!
Here is the math question.
Answer:
X = 6
Step-by-step explanation:
Look at the attachment
The rule T5, -0.5 oR 0, 180(x,y) is applied to triangle FGH to produce triangle F’G’H’. What are the coordinates of vertex F’ of triangle F’G’H’?
Answer:
Step-by-step explanation:
Rule for the transformations has been given as,
[tex]T_{(5, -0.05)o\text{R}(0, 180)}(x,y)[/tex] defines the rules as the translation by 5 units right and 0.5 units down followed by rotation of the triangle by 180° about the origin.
In other words,
Rule for translation:
F(x, y) → F"(x + 5, y - 0.5)
Followed by the rotation of 180° about the origin,
Rule of rotation,
F"(x', y') → F'(-x, -y)
Following these rules coordinates of the new triangle F'G'H' can be obtained.
There are only about 400,000 African elephants left in the world today. They are
classified as endangered by the International Union for Conservation of Nature, and
the population continues to decrease by 9% per year. What will the population of
African elephants be in fifty years?
Answer:
In 50 years there'll be approximately 3582 elephants.
Step-by-step explanation:
If they are decreasing at a rate of 9% per year, it means it's population by year is:
population(0) = 400000
population(1) = population(0)*(100% - 9%) = population(0)*(91%)
population(2) = population(1)*(91%) = population(0)*(91%)*(91%) = population(0)*(91%)²
population(3) = population(2)*(91%) = population(0)*(91%)²*(91%) = population(0)*(91%)³
And so on, so the number of population as years passes is:
population(n) = population(0)*(91/100)^n
In this case we want to know the population of elephants when n = 50, so we have:
population(50) = 400000*(0.91)^50 = 3582.033
In 50 years there'll be approximately 3582 elephants.
PLEASE HURRY!!IM BEING TIMED!WILL NAME BRAINLIEST!!
The table and graph show that each cracker in a package has 7 calories.
Crackers and Calories
crackers(X) calories(Y)
1 7
2 14
3 21
4 28
Which statement about the graph is true?
A.)The number of crackers is the dependent variable, and the number of calories is the independent variable.
B.)The point (42, 6) is on the line.
C.)The number of crackers are graphed on the y-axis, and calories are graphed on the x-axis.
D.)The two variables are the number of crackers and the number of calories.
(Picture not option!just a graph!)
Answer:
D.)The two variables are the number of crackers and the number of calories.
Step-by-step explanation:
The number of crackers is the independent variable, and the number of calories is the dependent variable.
The point (6, 42) is on the line
The number of crackers are graphed on the x-axis, and calories are graphed on the y-axis.
