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horrorfan [7]
3 years ago
14

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

Mathematics
1 answer:
Llana [10]3 years ago
6 0

Answer:

3 {x}^{2}  + 5x - 7x + 3  - 5 {x}^{2}  + 2 \\ 3 {x}^{2}  - 5 {x}^{2}  + 5x - 7x + 3 + 2 \\   = - 2 {x}^{2}  - 2x + 5

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5+3×=6+2×what's this ​
Nutka1998 [239]

First combine like terms ( x's go with x's), so subtract 2x to both sides and you get:

5+ (3x-2x) = 6 + (2x-2x)

5 + x = 6

Isolate x by bringing 5 to the other side by subtraction

(5-5) + x = (6-5)

x = 1

Hope this helped!

8 0
3 years ago
Use the net to find the surface area of the prism.
mel-nik [20]

Answer:

a. 96 in²

Step-by-step explanation:

The surface area of the prism = the sum of the area of each part of the net shown

✔️Area of the 2 equal triangles = 2(½*b*h)

b = 4 in

h = 3 in

Area of the two triangles = 2(½*4*3) = 12 in²

✔️Area of the rectangle 1 with the following dimensions:

L = 7 in

W = 3 in

Area = L*W = 7*3 = 21 in²

✔️Area of the rectangle 2 with the following dimensions:

L = 7 in

W = 4 in

Area = L*W = 7*4 = 28 in²

✔️Area of the rectangle 3 with the following dimensions:

L = 7 in

W = 5 in

Area = L*W = 7*5 = 35 in²

✅Surface area of the prism = 12 + 21 + 28 + 35 = 96 in²

4 0
2 years ago
A ball is released at a height of 8 inches to roll inside a half-cylinder it rolls to a height of 2 inches on the other side of
yuradex [85]

Answer:

C) 1/8 inch

Step-by-step explanation:

We are given the explicit formula

a_n=2(\frac{1}{4})^{n-1}, where n is the term number.

The third climb up would be the third term; this means we replace n with 3:

a_3=2(\frac{1}{4})^{3-1}\\\\a_3=2(\frac{1}{4})^2=2(\frac{1}{4}\times \frac{1}{4})=2(\frac{1}{16})=\frac{2}{16}=\frac{1}{8}

6 0
3 years ago
PLEASE I NEED HELP WITH MATH HOMEWORK
tino4ka555 [31]

Answer:

x=50

Step-by-step explanation:

3x+30=180

3x=150

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4 0
3 years ago
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Answer: -1

Step-by-step explanation:

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2 years ago
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