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hichkok12 [17]
3 years ago
8

Evaluate the expression: 5m – 3n + 7 for m = -4 and n = -6

Mathematics
2 answers:
Maurinko [17]3 years ago
4 0

Answer:

5

Step-by-step explanation:

5m – 3n + 7

<u>5(-4)</u> <u>-</u> <u>3(-6)</u> +7

-20+<u>18+7</u>

-20+25

=5

Eduardwww [97]3 years ago
3 0

Answer:

5

Step-by-step explanation:

5x-4 is -20

-3x-6 is 18

-20+18 is -2

-2+7=5

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PLEASE HELP!!!!!!!!!!!!!!!!!!!!!1111 I REALLY NEED HELP I A, BEGGIN YOU GUYS!!!!!!!!!!!!!!!!!!!!!!!!!!! ILL GIVE BRAINLIEST AND
Thepotemich [5.8K]

Answer:

Step-by-step explanation:

4y - 2(5 - y + 4) = 4y - 2(9 - y)

                         = 4y + 9*(-2) - y *(-2)

                         = 4y  - 18 + 2y      {Combine like terms 4y and 2y}

                         = 6y - 18

6y - 18 = 6*y - 6*3

           = 6(y - 3)

6y- 18 =  2 *3y - 2*9

          = 2(3y -9)

2(3y - 9) and 6(y- 3 ) are equivalent to 4y - 2(5- y +4)

Others are not equivalent

3 0
3 years ago
Find g(a-2)+3g(2a) if g(x)=x²-5x+8
sertanlavr [38]

Answer:

13a² - 39a + 46

Step-by-step explanation:

To find g(a-2)+3g(2a), find each part using the function g(x)=x²-5x+8.

g(a-2) = (a-2)²-5(a-2)+8 = a² - 4a + 4-5a + 10+8 = a² - 9a + 22

3g(2a) = 3{(2a)²-5(2a)+8} = 3{ 4a² - 10a + 8} = 12a² - 30a + 24

Combine the values to find g(a-2)+3g(2a).

g(a-2)+3g(2a) = (a² - 9a + 22) + (12a² - 30a + 24) = 13a² - 39a + 46

4 0
3 years ago
Plz help I will mark brainliest if correct ​
Alekssandra [29.7K]

Answer:

A ................................

6 0
3 years ago
Read 2 more answers
What is 9/10-6/10 or can you not do it?
Olin [163]

Answer:

3/10

Step-by-step explanation:

9-6=3

both fractions have the same denominator so they keep it

9/10 - 6/10 = 3/10

<h3>3/10 is also 0.33</h3>
5 0
3 years ago
A rectangle measures 16 cm by 4 cm. It has the same area as a square. Find the perimeter of the square.
Elis [28]

ok ... in this situation... we need to find the area of the rectangle first as it is equal to the area of square .

so .... area of rectangle = l×b= 16×4

= 64 ∴area of square = 64

area of square = s×s

∴to find one side of the square ... we need to find the root of 64 = 8

∴one side = 8

now : perimeter of square : 4 × sides = 4 × 8 = 32 ║


7 0
3 years ago
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