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Harlamova29_29 [7]
3 years ago
7

Simplify the expression. -3m + 2n + 9m

Mathematics
2 answers:
Alex Ar [27]3 years ago
8 0

Answer:

6m+2n

Step-by-step explanation:

Rearrange the order of the equation so it's like this:

9m-6m+2n

then you subtract 3m from 9m and you get 6m so the answer is 6m+2n

ycow [4]3 years ago
5 0

Answer:

Step-by-step explanation:9m -3m +2n = 6m+2n

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Which of the following is a factor of both f(x)=x^2-4x-45 and g(x)=x^2-25
wolverine [178]

Answer:

-5

Step-by-step explanation:

x² - 4x - 45 = 0

(x - 9)(x + 5) = 0

x = 9 or -5

x² - 25 = 0

(x + 5)(x - 5) = 0

x = 5 or -5

-5 is a common factor between both of them

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2 years ago
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Find the missing dimensions: Use the scale factor 1/4:3
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The answer is 1/4!

Step-by-step explanation:

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3 years ago
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If the points at (-4, 3) and (2, 3) are reflected over the x-axis to create two new points, what shape can be formed by the four
Svetllana [295]

Answer:

Step-by-step explanation:

Let (a,b)\in \mathbb{R}^{2}, a reflection over the x-axis consists in the following operation:

(a,b) \rightarrow (a,-b)

If we know that X = (-4,3) and Y = (2, 3), then the points translated over the x-axis are X' = (-4, -3) and Y' = (2,-3), respectively. The most precise description of the shape is a rectangle for the following facts:

1) XX' = YY' = 8 and XY = X'Y' = 6.

2) X and X' have the same x-component.

3) Y and Y' have the same x-component.

4) X and Y have the same y-component.

5) X' and Y' have the same y-component.

A representation of the shape is included below as attachment.

3 0
3 years ago
Help me w this multiple choice!
olga2289 [7]

Answer:

D

Step-by-step explanation:

\sin(30)  =  \frac{n}{ \frac{10 \sqrt{3} }{3} }   \\ 0.5 =  \frac{n}{5.77} \\ n = 2.88 =  \frac{5 \sqrt{3} }{3}

\cos(30)  =  \frac{m}{ \frac{10 \sqrt{3} }{3} }  \\ 0.866 =  \frac{m}{5.77}  \\ m = 5

3 0
3 years ago
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