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2 years ago

6

bell's cell phone coasts $18 pre month plus $0.15 for every minute she uses the phone last month her bill was $29.25 for how man

y minutes did she us her phone last month

1 answer:

gayaneshka [121]2 years ago

3 0

Grace used her phone for 75 minutes last month.

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Black_prince [1.1K]

Answer:

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Step-by-step explanation:

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Given the parent function of f(x) = x3, what change will occur when the function is changed to f(x + 3)? A) Shift to the right 3

kompoz [17]

The parent function is : f ( x ) = x³
f ( x + 3 ) = ( x + 3 )³
It is B ) shift to the left 3 units.

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Raquel has created a program for a robot. The robot travels 10 meters and stops. The program is designed for wheels that are 2.5

Grace [21]

Answer:

Raquel should adjust the number of rotations to 115.81 rotations

Step-by-step explanation:

step 1

Find the circumference of the wheels that are 2.5 cm in diameter

The circumference is equal to

$C=2\pi r$

we have

$r=2.5/2=1.25\ cm$

assume

$\pi =3.14$

substitute

$C=2(3.14) (1.25)$

$C=7.85\ cm$

step 2

Find the number of rotations

Divide 10 meters by the circumference

$10\ m=1,000\ cm$

$1,000/7.85=127.39\ rotations$

step 3

For a diameter of 2.75 cm find how should she adjust the number of rotations so that the robot travels the same distance

Find the circumference of the wheels

The circumference is equal to

$C=2\pi r$

we have

$r=2.75/2=1.375\ cm$

assume

$\pi =3.14$

substitute

$C=2(3.14) (1.375)$

$C=8.635\ cm$

step 4

Find the number of rotations

Divide 10 meters by the circumference

$10\ m=1,000\ cm$

$1,000/8.635=115.81\ rotations$

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2 years ago

The number of walls, w, that Joe can paint in t hours is given by the equation w=32t−1. Answer the questions below.

klio [65]

We have been given an equation $w=\frac{3}{2}t-1$ that represents umber of walls, w, that Joe can paint in t hours. We are asked to find the number of hours it will take Joe yo paint 7 walls.

To solve our given problem, we will substitute $w=7$ in our given equation as:

$7=\frac{3}{2}t-1$

Let us solve for t.

$7+1=\frac{3}{2}t-1+1$

$8=\frac{3}{2}t$

$8\cdot\frac{2}{3}=\frac{2}{3}\cdot\frac{3}{2}t$

$\frac{8\cdot2}{3}=t$

$\frac{16}{3}=t$

Therefore, it will take $\frac{16}{3}$ hours Joe to paint 7 walls.

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3 years ago

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andrew-mc [135]

Y = 50 + 65w
It would be the second response

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