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3 years ago

I really need help....

Mathematics

2 answers:

jok3333 [9.3K]3 years ago

7 0

Answer:

x=8

Step-by-step explanation:

2x-7=3x-15

Solve for x

aniked [119]3 years ago

5 0

Answer:

x = 22

Step-by-step explanation:

By the corresponding angle theorem, (3x - 15) = (2x + 7). We can use this to find x by solving for x in the equation we found.

3x - 15 = 2x + 7

Add 15 to both sides.

3x = 2x + 22

Subtract 2x from both sides.

x = 22

So we have found that x = 22.

I hope this helps. Happy studying.

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What are the solutions to the following system of equations?<br> y = x2 + 12x + 30<br> 8x – y = 10

atroni [7]

We are given with two solutions: y = x2 + 12x + 30 and 8x – y = 10 and is asked to determinte the solutions of the system of equations. We get y in the second eqn which is equal to 8x -10. we substitute this to first eqn resulting to
8x-10 = x^2 + 12 x + 30. this is a second order equation. x is equal to -2 + 6i and -2 - 6i.

7 0

3 years ago

Find the equation (in terms of x) of the line through the points (-4,2) and (3,-5)<br><br>Y=

hichkok12 [17]

<h3>Answer: y = -x-2</h3>

==================================================

Explanation:

First we need the slope

$(x_1,y_1) = (-4,2) \text{ and } (x_2,y_2) = (3,-5)\\\\m = \frac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\m = \frac{-5 - 2}{3 - (-4)}\\\\m = \frac{-5 - 2}{3 + 4}\\\\m = \frac{-7}{7}\\\\m = -1\\\\$

Then we can find the y intercept using the coordinates of (x,y) = (-4,2)

y = mx+b

2 = -1(-4)+b

2 = 4+b

2-4 = b

-2 = b

b = -2

Alternatively, you can use the other point (x,y) = (3,-5) and m = -1.

Because m = -1 and b = -2, we go from y = mx+b to y = -1x+(-2) which simplifies to y = -x-2

8 0

3 years ago

2x + 5y = -3<br> 2x + 2y = 6

oee [108]

Answer:

(6, - 3 )

Step-by-step explanation:

Given the 2 equations

2x + 5y = - 3 → (1)

2x + 2y = 6 → (2)

Subtracting (1) from (2) term by term will eliminate the x- term

(2x - 2x) + (2y - 5y) = 6 - (- 3), that is

- 3y = 9 ( divide both sides by - 3 )

y = - 3

Substitute y = - 3 in either of the 2 equations and solve for x

Substituting y = - 3 in (1)

2x + 5(- 3) = - 3

2x - 15 = - 3 ( add 15 to both sides )

2x = 12 ( divide both sides by 2 )

x = 6

Solution is (6, - 3 )

8 0

3 years ago

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Paladinen [302]

Answer:

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Equation of the straight line

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Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the point ( 8,-7) and $m = \frac{-3}{4}$

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3 years ago

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KiRa [710]

Answer:

see attached image

Step-by-step explanation:

3 0

2 years ago

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