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sleet_krkn [62]
3 years ago
6

Simplify by adding (x+4) +(2x-7)

Mathematics
2 answers:
slega [8]3 years ago
7 0

Answer:

3x - 3

Step-by-step explanation:

Hello!

The first thing you want to do is REMOVE the parentheses, because they are not needed. The equations in them have already been FULLY SIMPLIFIED.

But, DON'T throw those parentheses away! Our next step is to RE-ARRANGE our terms. Have the 'x terms' on one side, and the constants on the other, putting those parentheses around the two. Your equation should look like:

(x + 2x) + (4 - 7)

Our final step is to simplify.

(1)x + 2x = 3x

4 - 7 = -3

Therefore, your final answer is 3x - 3

Hope this helped!

-Mary

AfilCa [17]3 years ago
6 0

Answer:

3x - 3

Step-by-step explanation:

(x + 4) + (2x - 7) =

The first step is to drop the parentheses since they are unnecessary.

= x + 4 + 2x - 7

Now group like terms together.

= x + 2x + 4 - 7

Combine like terms.

= 3x - 3

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The Ortiz family will travel round-trip from Indianapolis to Denver this summer. The driving distance between the two cities is
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Help quick please!!
Korolek [52]

Answer:

Difference of squares:

y^4−25

16x^2−81

Not difference of squares:

20m^2n^2−121

p^8−q^5

Step-by-step explanation:

y^4−25

(y²)² - 5²

16x^2−81

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20m^2n^2−121

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3 0
3 years ago
The graph of g(x) is obtained by reflecting the graph of f(x)=2|x| over the x-axis.
Lera25 [3.4K]
Answer: Choice C) 
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The negative will flip every y coordinate from positive to negative (or vice versa)

You'll also use the idea that |2x| = 2|x|. The two can be pulled out since we can say |x*y| = |x|*|y|
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4 0
3 years ago
Mia found the area of a polygon The area is 32 square cm.
solniwko [45]

Answer:

Only the isosceles trapezoid has an area of 32 cm².

Step-by-step explanation:

Let's calculate the area of each polygon.

For the two triangles we have:

A_{t} = \frac{bh}{2} = \frac{2 cm*4 cm}{2} = 4 cm^{2}

This polygon does not have an area of 32 cm².

For the rectangle we have:

A_{r} = bh = 6 cm*4 cm = 24 cm^{2}

This polygon does not have an area of 32 cm².

For the rectangle trapezoid we have:

A_{rt} = A_{t} + A_{r} = (4 + 24) cm^{2} = 28 cm^{2}

So, this polygon does not have an area of 32 cm².

Finally, for the isosceles trapezoid:

A_{it} = A_{t}*2 + A_{r} = (4*2 + 24) cm^{2} = 32 cm^{2}

This polygon does have an area of 32 cm².

   

Therefore, only the isosceles trapezoid has an area of 32 cm².

I hope it helps you!                              

8 0
3 years ago
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