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3 years ago

Simplify the expression and explain each step 4(3×+2)-2

Mathematics

2 answers:

kirill [66]3 years ago

7 0

4(3×+2)-2

distribute

12x +8 -2

combine like terms

12x+6

Novay_Z [31]3 years ago

5 0

12x + 8 - 2

Distribute

12x+6

Combine Like Terms

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What is 18 is 50% of

Zielflug [23.3K]

What you would have to do is take the 18 and double it because 50% doubled is 100% so when you double 18 it is 36

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3 years ago

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(2,-4) and (6,2).<br> Find the mid point

Olin [163]

Answer:

The answer is

Step-by-step explanation:

The midpoint M of two endpoints of a line segment can be found by using the formula

$M = ( \frac{x1 + x2}{2} , \: \frac{y1 + y2}{2} )$

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(2,-4) and (6,2)

The midpoint is

$M = ( \frac{2 + 6}{ 2} , \: \frac{ - 4 + 2}{2} ) \\ = ( \frac{8}{2} \: , \: - \frac{2}{2} )$

We have the final answer as

Hope this helps you

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4 years ago

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Which would be the best method to use to solve the following equations? Explain your reasoning.

o-na [289]

A. square root property

$3x^2-192=0\\x^2-66=0\\x^2=66\\x= -\sqrt{66} or \sqrt{66}$

it has one value with x which is x^2 and it cn be easily solved without having to factorise, quadratic formula cant be used as it need ax^2+bx+c=0 format

B. factorising

$x^2-x-6=0\\x^2+2x-3x-6=0\\(x+2)(x-3)=0\\x+2=0 and x-3=0\\x= -2 \\x= 3$

i just felt like this was easier to factorise than the other 2 options left

C. Completing the square

$x^2-6x-7=0\\(x-3)^2=0\\x= -1\\x= 7$

same reason personal preference

D- Quadratic

$x^2-17x-7=0\\x=\frac{-(-17)+\sqrt{(-17)^2-4(1)(-7)} }{2(1)} \\x=\frac{-(-17)-\sqrt{(-17)^2-4(1)(-7)} }{2(1)}\\x=17.4\\x=-0.402$

the 17 kinda threw me off and i didnt wanna get on factorising or doing completing the square so quadratic formal

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3 years ago

If you pour 3 gallons of paint into 8 cans how much will be in each can

bezimeni [28]

Answer:

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2 years ago

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0.875 and 87.5% represent equivalent values. Which represents their equivalent fractional part

Shalnov [3]

Which represents their equivalent fractional part

Choose B: 7/8

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