All categories

3 years ago

Please help me with substitution! I'm terrible at it. :( -3x+5y=-11 y=2x-5

Mathematics

1 answer:

OLEGan [10]3 years ago

7 0

-3x+ 5* 2x-5= -11
-3x+10x-5=-11
(-3x=10x=7)
7x-5=-6
(+5 on each end)
7x=-6
divide by 7

You might be interested in

The factorization below is missing two positive integers a and b. 6x^(3)+18x^(2)-240x=6x(x-a)(x+b) Factor the polynomial and the

Dvinal [7]

Answer:

a = 5

Step-by-step explanation:

Hello, please consider the following.

$6x^3+18x^2-240x=6x(x^2+3x-40)\\\\\text{** The sum of the zeroes is -3=-8+5 and the product is -40=-8*5. **}\\\\\text{** So, we can factorise. **}\\\\6x^3+18x^2-240x=6x(x^2+3x-40)=6x(x^2+8x-5x-40)\\\\=6x(x(x+8)-5(x+8))\\\\\large \boxed{=6x(x+8)(x-5)}$

So, a = 5.

Thank you.

7 0

4 years ago

The stock market dropped 220 points on Monday. It lost another 48 points on Tuesday, and on Wednesday, it gained 96 points. What

MissTica

48 points gained in those 3 days.

Subtract 220 with 48, then add 96. Last step would be subtracting 220 with the amount they have now in those 3 days to find how much points the stock market gained in those 3 days.

Subtract 220-48.It‘ll be 172.

Add 172 with 96. 172+96=268.

Subtract 268 with how much points the stock market had 3 days ago. 268-220.

Sot eh stock market gained 48 points in 3 days.

4 0

3 years ago

Use Euler’s Formula to find the missing number. Edges: 37 Faces: 25 Vertices: ?

matrenka [14]

Answer:

Step-by-step explanation:

Comment

The formula that relates edges faces and vertices is F + V = E + 2

Givens

Edges (E): 37

Faces (F) = 25

Vertices: x

Solution

25 + x = 37 + 2 Subtract 25 from both sides.

25-25 +x= 37 - 25 + 2 Combine

x = 12 + 2

x = 14

Answer: The vertices = 14

7 0

2 years ago

Which box plot represents a set of data that has the least mean absolute deviation?

Y_Kistochka [10]

Answer

b is the correct answer on ed and e2020

Step-by-step explanation:

tell me if you agree.

8 0

3 years ago

Read 2 more answers

Helen had $330 in her savings account when Vince opened a savings account with zero dollars.• Helen deposited $30 into her accou

geniusboy [140]

Answer:

Step-by-step explanation:

3 0

3 years ago