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4 years ago

Providean explanation for each step 12d+2-3d=5

1 answer:

8 0

12d+2-3d=5 collect the like terms
9d+2= 5 move constant to the right
9d=5-2 subtract the number
9d=3d divide both sides by 9

answer = d=1/3
$d= \frac{1}{3}$

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Find the area of each sector.

nevsk [136]

Answer:

225

Step-by-step explanation:

360 - 135 = 225

7 0

3 years ago

Two cars travel at the same speed to different destinations. Car A reaches its destination in 17 minutes. Car B reaches its dest

Goryan [66]

Answer:

speed of car A =Speed of car B=0.8 miles/minutes.

Step-by-step explanation:

We are given that speed of car A is equal to speed of car B.

Also let car A travels x miles.

and car B travels y miles.

Car A reaches its destination in 17 minutes.

this means that speed of car A is given by: $\dfrac{x}{17}$ miles/minutes ( since speed is defined as the ratio of distance and time).

Car B reaches its destination in 32 minutes.

This means that the speed of car B is given by: $\dfrac{y}{32}$ miles/minutes

as speed of both cars are equal this means:

$\dfrac{x}{17}=\dfrac{y}{32}$ ------(1)

Also we are given Car B travels 12 miles farther than Car A.

this means $y-x=12$

$y=12+x$ ------(2)

on using equation (1) and (2) we have:

$\dfrac{x}{17}=\dfrac{12+x}{32}\\ \\32x=17(12+x)\\\\32x=17\times12+17x\\\\32x-17x=17\times12\\\\15x=122\times17\\\\x=13.6$

Hence the speed of car A is 0.8 miles/minutes ( since x/17 is the speed of car A)

Speed of car B=0.8 miles/minutes.

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4 years ago

Beyonce is solving a system of equations: 2x – 3y = -2

andrezito [222]

Answer:

Step-by-step explanation:

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3 years ago

Where are the black dots located?!!

Ludmilka [50]

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3 years ago

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Suppose a laboratory has a 30 g sample of polonium-210. The half-life of polonium-210 is about 138 days. How many half-lives of

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That is exactly 8 half lives.
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3 years ago

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