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dem82 [27]
3 years ago
8

Which expression is equivalent to 3(4m - 2) - 2(m + 5)

Mathematics
2 answers:
tangare [24]3 years ago
7 0

Answer:

A. 10m - 16

Step-by-step explanation:

First, distribute 3 to all terms within the corresponding parenthesis, and -2 likewise:

3(4m - 2) =

3 * 4m = 12m

3 * -2 = -6

3(4m - 2) = 12m - 6

-2(m + 5) =

-2 * m = -2m

-2 * 5 = -10

-2(m + 5) = -2m -10

Combine like terms:

12m - 6  -2m - 10

12m - 2m - 6 - 10

(12m - 2m) + (-6 - 10)

10m - 16

A. 10m - 16 is your answer.

~

Bess [88]3 years ago
5 0

Answer:

10 m - 16 (Answer A)

Step-by-step explanation:

We use distributive property to eliminate parenthesis:

12 m - 6 - 2 m -10

and now combine like terms:

[12 m - 2 m] - 6 - 10

10 m - 16

Therefore, answer option A.  is the correct one

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Step-by-step explanation:

The answer is letter B. Negative and Negative is Positive.

3 0
3 years ago
2(-5y + 6) + 2(5 - 3.4s)
Andre45 [30]
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5 0
3 years ago
A square of the side lenght of 6cm has the same area as this rectangle . find the perimeter of the rectangle.
Aleksandr-060686 [28]

Answer:

The perimeter of the rectangle is 26 cm

Step-by-step explanation:

First find the area of the square by multiplying 6 by itself

A = 6 cm * 6 cm = 36 sq cm

Since the rectangle has the same area as the square, we can say that w * 9 = 36 sq cm

w * 9 = 36

Divide both sides by 9 to isolate the variable, w

w * 9 / 9 = 36 / 9

w = 4 cm

The width of the rectangle is 4 cm so now we just use that to find the perimeter of the rectangle

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3 0
2 years ago
PLS IM SO STUCK ITS MATH
timofeeve [1]

Answer:

y-intecept: (0,14), x-intercept: (-8,0)

Step-by-step explanation:

Let us first solve for the y-intercept, solve the equation for y to set it to slope-intercept form.

-7x+4y=56\\4y=56+7x\\y=14+\frac{7}{4}x\\y=\frac{7}{4}x+14\\

Now we have our y-intercept, 14

To solve for the x-intercept, all we have to do is set y to 0 and solve for x:

0=\frac{7}{4}x+14\\-14=\frac{7}{4}x\\-56=7x\\-8=x

Therefore our x-intercept is -8.

To find the vector (x and y value) of the x intercept, we set the y value equal to 0, such as the vector of the x-intercept is equal to (-8,0).

For the y-intercept we follow a similar approach setting the x-value equal to 0, making it (0,14)

5 0
2 years ago
The ratio of three numbers is 1 : 4 : 2. The sum of the numbers is 35. What are the three numbers?
MA_775_DIABLO [31]

Answer:

5, 20, 10

Step-by-step explanation:

If you were to multiply the 3 numbers using trial and error up to 5, then you'd get 5, 20, and 10, which have a combined sum of 30. You have multiplied the ratio by 5.

8 0
3 years ago
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