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3 years ago

Solve 2(x-1) = 10

2 answers:

8 0

You first want to get rid of 2, so you divide two on both sides canceling the two on the left and getting x-1=5. then you add 1 to both sides getting x=6. Hope this helps!

dedylja [7]3 years ago

4 0

1) Distribute the 2 to x and -1. You get: 2x - 2 = 10

2) Add 2 to both sides of the equation. You get:
2x = 12

3 Divide both sides by 2.
You get: x = 6

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Solve for y<br> 3x+1/5y=7

Tcecarenko [31]

Answer:

y = -15x + 35

Step-by-step explanation:

3x + 1/5y = 7

1/5y = -3x + 7

y = 5( -3x + 7)

y = -15x + 35

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3 years ago

the perimeter of a concession stand at the ballpark is 88 meters. the length is 4 meters longer than the width. what is the leng

LuckyWell [14K]

Answer:

length=4 meters. width= 40 meters.

Step-by-step explanation:

88-4*2=80. 80 divided by 2 is 40. So, the width os 40 meters and the length is 4 meters.

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3 years ago

a bakerysells a cake for 250.00 pesos. the labor cost 32.50pesos per cake.flour costs 31.85pesos.other costs add up to 92.10peso

skad [1K]

The profit on each cake is $93.55 pesos.

7 0

3 years ago

Read 2 more answers

You have earned $200 doing chores how long will it take to triple your money if you keep it in an account earning 4.25 compound

Alekssandra [29.7K]

Answer:

25.85 years

Step-by-step explanation:

Use the formula for continuous compounding amount:

A = Pe^(r*t), where r is the interest rate as a decimal fraction, P is the initial amount, and t is the time in years.

Here we have:

A = $200e^(0.0425*t) = 3($200) (this is triple the original amount)

Solve this for t. Divide both sides by $200 and then use natural logs:

1e^(0.0425*t) = 3

Then 0.0425*t = ln 3 = 1.0986

Dividing both sides by 0.0425 will isolate t:

1.0986

t = --------------- = 25.85 years

0.0425

6 0

4 years ago

Read 2 more answers

A plan traveled 324 miles each way to Austin and back. The trip there was with the wind. It took 3 hours. The trip back was into

sleet_krkn [62]

Answer: the speed of the plane in still air is 81 mph.

the speed of the wind is 27 mph.

Step-by-step explanation:

Let x represent the speed of the plane in still air.

Let y represent the speed of the wind.

The trip there was with the wind. It means that total speed at which the plane travelled with the wind is

(x + y) mph.

It took 3 hours and the distance travelled was 324 miles.

Distance = speed × time

Distance travelled with the wind is

324 = 3(x + y)

Dividing both sides of the equation by 3, it becomes

108 = x + y-- - - - - - - - -1

The trip back was into the wind. It means that total speed at which the plane travelled into the wind is

(x - y) mph.

It took 6 hours and the distance travelled was also 324 miles.

Distance travelled into the wind is

324 = 6(x - y)

Dividing both sides of the equation by 6, it becomes

54 = x - y-- - - - - - - - -2

Adding equation 1 to equation 2, it becomes

162 = 2x

x = 162/2

x = 81

Substituting x = 81 into equation 1, it becomes

108 = 81 + y

y = 108 - 81

y = 27

6 0

3 years ago