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Olegator [25]
3 years ago
15

This is solving systems by substituting y=-2x+5 3y=-x-5

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
7 0

Answer:

y = - 3

Step-by-step explanation:

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

-6x+15=-x-5

-5x=-20

x=4

y=-2(4)+5

y=-3

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Evaluate each using the values given.<br> 7) 3 - x + x + y; use x = 4, and y=-1
kkurt [141]

Answer:

2

Step-by-step explanation:

3-4+4+(-1) (-4+4=0)

=3-1

=2

4 0
3 years ago
How many times does 20 go into 100
ss7ja [257]

Answer:

5 times

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Please help me with dividing by monomials
Verizon [17]

Answer:

<h2>No. D ) ( h^2 - 4h + 2 ) / h is correct</h2>

Step-by-step explanation:

( 8h^5 - 32h^4 + 16h^3 ) / 8h^4

= ( 8h^3( h^2 - 4h + 2 ) / 8h^4

= ( h^2 - 4h + 2 ) / h

5 0
3 years ago
Find the distance between the points (<br> -<br> 10,12) and (15,12).
Nitella [24]
The distance formula is:

d= \sqrt{(x_1-x_2)^2+(y_1-y_2)^2}

We are given two points in the form (x,y), so plug in the values to the distance formula:

d= \sqrt{(-10-15)^2-(12-12)^2}

Next we can simplify. We know that 12-12 is 0, so we can drop it from the equation, as it will not affect our answer. Also, we know that -10-15 is -25:

d= \sqrt{(-25)^2}

The square and square root cancel each other out leaving us with 25.

The answer is 25.


5 0
3 years ago
Pls help I’ll brainlest and add extra points
Phoenix [80]

Answer:

26. D) $252

27. A) -6.7 + 6.8

Step-by-step explanation:

26. 400 * 0.3 = 120

400 - 120 = 280

280 * 0.1 = 28 (because the 10% is additional, cannot add it to the original 30%)

280 - 28 = 252

27. -4.5 + 4.4 = -0.1

- 6.7 + 6.8 = 0.1

-0.1 + 0.1 = 0

6 0
3 years ago
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