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katovenus [111]
3 years ago
13

Free Response - calculator may be used. Please help 50 points and brainliest

Mathematics
2 answers:
Gala2k [10]3 years ago
8 0

Answer:

3x^2 + x -4

Step-by-step explanation:

add them together to get:

-2x^2 + 5x^2 +3x - 2x +3 -7

3x^2 + x - 4 this should be the answer

Sphinxa [80]3 years ago
7 0

Answer:

3x^2 + x -4

Step-by-step explanation:

add them together to get:

-2x^2 + 5x^2 +3x - 2x +3 -7

3x^2 + x - 4 this should be the answer, if im right

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goldenfox [79]
61 is a prime number.
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Erica used friendly numbers to find 43-19. She added 1 to 19 and subtracted 1 from 43. What is Erica's error?
Naily [24]
I think that it is....
42-20=22
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4 years ago
Read 2 more answers
How do I solve this
soldi70 [24.7K]

Answer:

C) 155

Step-by-step explanation:

all these angles add up to 360, so --

25 + 34 + 146 + m<9 = 360

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3 0
2 years ago
Which ordered pair that is a solution to the equation y = 12x + 15.
Lelechka [254]

Answer:

(1 , 27)

Step-by-step explanation:

The ordered  pair (1 , 27) means:

x = 1

y = 27

Now putting value of x and y in given equation to check weather it satisfies:

y = 12x + 15.

27 = 12 (1) + 15

27 = 12 + 15

27 = 27

hence proved

I hope it will help you!

5 0
3 years ago
Darren cut along a diagonal line across a sheet of paper to make a triangle. The paper was 10 inches long and 8 inches wide. Wha
crimeas [40]

Answer:

40 in^2

Step-by-step explanation:

The initial dimensions of the paper are:

L=10 in (length)

W=8 in (width)

After the paper is cut along the diagonal, we remain with a right triangle, of which the length and the width corresponds to the base and the height.

For a triangle, the area is calculated as

A=\frac{1}{2}bh

where

b is the base

h is the height

Here we have:

b=L=10 in\\h=W=8 in

Therefore, the area of the triangle is:

A=\frac{1}{2}(10)(8)=40 in^2

5 0
3 years ago
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