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AURORKA [14]
3 years ago
5

Please help me ASAP it’s times THANK U

Mathematics
1 answer:
goblinko [34]3 years ago
7 0

Answer:

Only choices C and D are solutions

Step-by-step explanation:

6x + 3y = -15

y = -2x - 5

6x + 3y = -15

6x + 3(-2x - 5) = -15

6x - 6x - 15 = -15

0 = 0

Since 0 = 0 is a true statement, both equations of this system are the same equation and represent a single line on the coordinate plane.

We need to check each choice in just one equation.

Let's use the second equation.

y = -2x - 5

A.

(2, 7)

7 = -2(2) - 5

7 = -4 - 5

7 = -9   False

Not a solution

B.

(5, 0)

0 = -2(5) - 5

0 = -10 - 5

0 = -15     False

Not a solution

C.

(-3, 1)

1 = -2(-3) - 5

1 = 6 - 5

1 = 1   True

Solution

D.

-13 = -2(4) - 5

-13 = -8 - 5

-13 = -13    True

Solution

Answer: Only choices C and D are solutions

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12 points for!
Kruka [31]

Answer:

  (x, y) ⇒ (x -2, y +2)

Step-by-step explanation:

Reflection across the line y = x+2 has the effect of interchanging x and y and translating by (-2, 2).

Reflection across the line y = x+4 has the effect of interchanging x and y and translating by (-4, 4).

The composition of these transformations is then ...

  (x, y) ⇒ ((x +2) -4, (y -2) +4) = (x -2, y +2)

7 0
3 years ago
please help, i will mark brainliest. i will report spam answers
OverLord2011 [107]

Answer:

p = 26

Q = 79

R =75

Step-by-step explanation:

because MNO is same as PQR (direction wise)

6 0
2 years ago
The first few steps in deriving the quadratic formula are shown. A table listing the first few steps in deriving the quadratic f
Nimfa-mama [501]

The answer is C

Step-by-step explanation:

5 0
3 years ago
Which problem could be solved with the expression 4*(4+2)
Rina8888 [55]
The answer is A.

He ran for six (6) miles every day. 4 in the morning and 2 at night = 6 per day.

He did this for four (4) days. The way to figure this would be to go 6 * 4. This equals 24 miles.

Go back a few steps (punny!).

So days multiplied by how many miles he ran a day which is calculated by miles in morning added to miles at night.

days*(miles per morning + miles per night)

days=4
miles per morning=4
miles per night = 2

4 * (4+2)

Calculating this out....

4 * (4+2)

(4+2 = 6)

4 * 6 = 24.

So A is the answer.
3 0
3 years ago
Solve and show how you did 5 (x-1) + 3 = 13
Goryan [66]
5(x-1) + 3 = 13
5x - 5 + 3 = 13
5x -2 = 13
5x = 15
x = 15/5
x = 3
4 0
3 years ago
Read 2 more answers
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