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nadezda [96]
2 years ago
12

Please help me it needs to be correct

Mathematics
2 answers:
son4ous [18]2 years ago
7 0
Answer is 20m + 8.
all you need to do is add the like terms ;)
dimaraw [331]2 years ago
6 0

Answer:

4(3m^3-2m^2+4m+2)

Step-by-step explanation:

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How many solutions does this system have?
Julli [10]

Answer:

one solution

Step-by-step explanation:

* Lets start to solve the question

- The 1st equation x - y = -4

- The 2nd equation 3x + y = 8

- We will use the elimination method to solve this system of equation

∵ x - y = -4 ⇒ (1)

∵ 3x + y = 8 ⇒ (2)

- Add the two equation (1) and (2) to eliminate y

∴ x + 3x = -4 + 8

∴ 4x = 4

- Divide both sides by 4

∴ x = 1

- Substitute the value of x in equation (1) or equation (2) to find

  the value of y

- We will use equation (1)

∴ 1 - y = -4

Subtract 1 from both sides

∴ -y = -5

- Divide both sides by -1

∴ y = 5

∴ The solution is (1 , 5)

* The system has one solution

6 0
3 years ago
Read 2 more answers
Divide 3500 in the ratio 2: 2 : 3
BlackZzzverrR [31]

Answer:

1000 : 1000 : 1500

Step-by-step explanation:

2 + 2 + 3 = 7

3500 ÷ 7 = 500

2 × 500 = 1000

2 × 500 = 1000

3 × 500 = 1500

1000 : 1000 : 1500

5 0
2 years ago
Read 2 more answers
What value is equivalent to 2 × 3 + 4 − 6^2?<br> A) -26<br> B) -22<br> C) -2<br> D) 10
Yuliya22 [10]

Answer:

-26

Step-by-step explanation:

2 × 3 + 4 − 6^2

PEMDAS

exponents are first in this equation

2 × 3 + 4 − 36

Then multiply

6 +4 -36

Then add and subtract from left to right

10-36

-26

3 0
3 years ago
Read 2 more answers
Find the y-intercept for the parabola defined by the equation y=x^2-x-12
o-na [289]

Answer:

The y-intercept is (0,-12).

Step-by-step explanation:

Given equation is y=x^2-x-12.

Now question says to find the y-intercept of the given parabola y=x^2-x-12.

We know that y-intercept means the y-value when x-value equals 0

so let's plug x=0 into given equation y=x^2-x-12  then solve that for y.

y=x^2-x-12

y=0^2-0-12

y=0-0-12

y=-12

Hence the y-intercept is (0,-12).

6 0
3 years ago
Jessica has 300 cm³ of material. She uses 12.6 cm³ to make a right triangular prism. She wants to make a second prism that is a
Rzqust [24]

Answer:52.8

Step-by-step explanation:

5 0
2 years ago
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