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3 years ago

it costs n dollars a day to rent a bike. Which expression represent the number of days a bike can be rented for $32.

Mathematics

1 answer:

lbvjy [14]3 years ago

6 0

It costs (8) dollars a day to rent a bike for (4) days, so the expression should be (8x4)=32

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Problems 7-15 Simplify each expression. 20 points

Nitella [24]

Answer:

7. k^4

8. m^6

9. 18x^4

10. 35u^8v^4

11. 6561

12. x^6 y^24

13. 16a^6 b^11 c^2

14. -8f^5 g^6 h^5

15. 81p^9 t^10

Step-by-step explanation:

7 0

3 years ago

The area of a rectangular horse pasture is 268,500 square yards. The length of the pasture is 5 yards less than three times the

Setler79 [48]

Answer: width = 300

<u>Step-by-step explanation:</u>

Area (A) = Length (L) x width (w)

Given: A = 268,500

L = 3w - 5

w = w

268,500 = (3w - 5) x (w)

268,500 = 3w² - 5w

0 = 3w² - 5w - 268,500

0 = (3w + 895) (w - 300)

0 = 3w + 895 0 = w - 300

-985/3 = w 300 = w

Since width cannot be negative, disregard w = -985/3

So the only valid answer is: w = 300

8 0

3 years ago

You want to build supports at each end of a table in the shape of a triangle. What type of triangle would you use to act as the

german

right angle because its always perpendicular to the floor

8 0

3 years ago

Solve the system using substitution x+5y=0 3y+2x=-21

Crazy boy [7]

Answer:

$\left \{ {{x = -15} \atop {y=3}} \right.$

Step-by-step explanation:

$\left \{ {{x + 5y = 0} (1) \atop {3y + 2x = -21}(2)} \right. \left \{ {{x = -5y} \atop {3y + 2x = -21}} \right. \left \{ {{x = -5y} \atop {3y + 2*(-5y) = -21}} \right. \left \{ {{x = -5y} \atop {3y - 10y = -21}} \right. \\ \left \{ {{x = -5y } \atop {-7y = -21}} \right. \left \{ {{x = -5y} \atop {y= 3 }} \right. \left \{ {{x = -5 * 3} \atop {y=3}} \right.=> \left \{ {{x=-15} \atop {y=3}} \right.$

5 0

3 years ago

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A balloon artist creates balloon hats for children at a store’s grand opening. The graph shows the number of balloons the artist

Dvinal [7]

Answer:

The phrase that best describes the the line representing the relationship between the number of balloons remaining and the number of hats created is:

Negative slope.
Constant slope.

Decreasing function.

Step-by-step explanation:

We are given a graph that represents the relationship between the Number of Balloons Hats and the number of balloons remaining.

Clearly from the graph we could that it is a linear function.

Also, the function is a decreasing function since with the increase of one variable that is the number of Balloon hats produced the other variable i.e. Balloons remaining is decreasing.

Also, we can calculate the slope of the line.

as the line is passing through (0,500) and (100,0)

Hence, the slope of line is:

$Slope=\dfrac{0-500}{100-0}\\\\Slope=\dfrac{-500}{100}\\\\Slope=-5$

Hence, the graph has a negative slope.

Also, we know that a slope of a line is always constant.

So, the correct statements are:

Negative slope.

Constant slope.

Decreasing function.

5 0

3 years ago

Read 2 more answers