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miss Akunina [59]
3 years ago
14

Maths question algebra

Mathematics
1 answer:
White raven [17]3 years ago
8 0

Answer:

x = ± \sqrt{\frac{7y+8}{5} }

Step-by-step explanation:

5x² - 3y = 4y + 8 ( add 3y to both sides )

5x² = 7y + 8 ( divide both sides by 5 )

x² = \frac{7y+8}{5} ( take square root of both sides )

x = ± \sqrt{\frac{7y+8}{5} }

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How to solve x^2-7=-x^2+1
andreev551 [17]

Answer:

Step-by-step explanation:

x^2 and -x^2 would cancel

and then it would be -7 = 1

it would be no solution

but I don't know, someone can prove me wrong I may have a lapse in my algebra at the moment

3 0
3 years ago
Finish solving the system of equations.
sergejj [24]

Answers:  x = 1 and y = -1

Explanation:

Start where your teacher left off, which is -3y = 3.

We solve for y by dividing both sides by -3

That turns -3y = 3 into y = -1

Then we use this y value to find x

x - 5y = 6

x - 5(-1) = 6

x + 5 = 6

x = 6-5

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4 0
3 years ago
Read 2 more answers
Solve the equation
Aleksandr-060686 [28]

Answer:

x = 6

Step-by-step explanation:

6x = 36

x = 6

hope that helps

5 0
3 years ago
Read 2 more answers
Need help :)........​
katrin2010 [14]
The graph of a quadratic equation will always cross the x-axis, that’s false because only the y-axis can cross into in only one place.
5 0
3 years ago
Richard & Tanjeev share a lottery win of £5650 in the ratio 4 : 1. Richard then shares his part between himself, his wife &a
lidiya [134]

Answer:

Answer is 904

Refer below.

Step-by-step explanation:

5650 total,

And 4:1 which adds up and make 5. So,

5x = 5650

x=5650/5

x=1130

As pichard part is 4:1 so his part is 4 overall the money so,

Richard got 4x = 4 × 1130 = 4520

4520 now dividing in 6:3:1

10a = 4520

A= 452

Wife amount is 3a = 3 ×452 = 1356

Son is 1a so its,

Son = 452

Minus= 1356 -452 = 904

Wife got 904 more than son

4 0
4 years ago
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