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3 years ago

What is 15+12x-5x+4y-7 by combining like terms

Mathematics

2 answers:

luda_lava [24]3 years ago

7 0

Answer:

8+7x+4y

Step-by-step explanation:

15-7 is 8

12x-5x is 7

Put it all together to get 8+7x+4y

cricket20 [7]3 years ago

6 0

Answer:

4y+7x+8

Step-by-step explanation:

First you combine any terms with y. There is only 4y so you write that down. Then, you combine the terms with x. 12x-5x=7x. Then, you combine the regular numbers so you get 8. Your final answer should be 4y+7x+8

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amm1812

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3 years ago

33 1/3 of 21 (finding the percent of a number)

iragen [17]

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5 0

3 years ago

Ax+3 = 7- bx what is x expressed in terms of a and b

krek1111 [17]

Ax+3=7-bx
Ax=4-bx
A=4-bx/x

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6 0

3 years ago

What is the area of the triangle? 5 4 3 units?

tankabanditka [31]

Answer:

6 units squared

Step-by-step explanation:

Formula:

area = 0.25 * √( (a + b + c) * (-a + b + c) * (a - b + c) * (a + b - c) )

Assign variables:

A = 5, B = 4, C = 3.

Distribute:

area = 0.25 * √( (5 + 4 + 3) * (-5 + 4 + 3) * (5 - 4 + 3) * (5 + 4 - 3) )

Combine like terms

area = 0.25 * √( (12) * (2) * (4) * (6) )

Multiply:

area = 0.25 * √(576)

Square root:

area = 0.25 * 24

Multiply:

area = 6 units squared

4 0

2 years ago

Simplify completely.

Arte-miy333 [17]

Answer:

$\large\boxed{\sqrt{27y^8}=3y^4\sqrt3}$

Step-by-step explanation:

$\sqrt{27y^8}=\sqrt{9\cdot3\cdot y^{4\cdot2}}\\\\\text{Use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b},\ (a^n)^m=a^{nm}\ \text{and}\ \sqrt{a^2}=a\\\\=\sqrt9\cdot\sqrt3\cdot\sqrt{(y^4)^2}=3\cdot\sqrt3\cdot y^4=3y^4\sqrt3$

3 0

3 years ago