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zheka24 [161]
3 years ago
8

Solve the following system of equations. Show your work -3-3y=12x , -5-y=2x

Mathematics
1 answer:
tekilochka [14]3 years ago
4 0

solving simultaneously

let equation 1 be -3-3y=12x

let equation 2 be -5-y=2x

equation 2 make y subject of formula=> y=-5-2x

replace (y=-5-2x) in equation 1

-3-3(-5-2x)=12x

solve for x

x=2

replace x=2 in equation 2

y=-5-2(2)

y=-9

Therefore, x=2 y=-9

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Working alone, kali can pick forty bushels of apples in 15 hours,l. One day her friend Natalie helped her and it only took 6 hou
cluponka [151]

Answer:

The time it will take Natalie to pick the forty bushels alone is 10 hours

Step-by-step explanation:

The time it takes Kali to pick forty bushels of apples alone = 15 hours

The time it takes Kali and Natalie to pick forty bushels = 6 hours

The rate at which Kali picks bushels = 40/15 bushels per hour  = 8/3 bushels per hour  

Let x represents the rate at which Natalie picks bushels, we have;

8/3 × 6 + x × 6 = 40

x × 6 = 40 - 8/3 × 6 = 24

x = 24/6 = 4

Therefore;

The rate at which Natalie picks the bushels of apples = 4 bushels/hour

The time it will take Natalie to pick the forty bushels alone = (40 bushels)/(4 bushels/hour) = 10 hours.

3 0
3 years ago
If the mean of 2 3 x and 5 is 4,find x​
Alchen [17]

Answer:

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Step-by-step explanation:

To find the mean, add up all the numbers and divide by the number of numbers

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3 0
3 years ago
When 3x+2≤5(x-4) is solved for x, the solution is?
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Hope this helps

Step-by-step explanation:

6 0
2 years ago
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