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3 years ago

In the example, 16 is what percent of 80? , what does 16 represent in the percent proportion

Mathematics

1 answer:

ivann1987 [24]3 years ago

6 0

Answer:

A proportion is an equation that says that two or more ratios are equal. For instance if one package of cookies contain 20 cookies that would mean that 2 packages contain 40 cookies

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Solve 2x2 + 12x - 14 = 0 by completing the square

vovangra [49]

Answer:

Step-by-step explanation:

$(a+b)^2=a^2+2ab+b^2\qquad(*)\\\\\\2x^2+12x-14=0\qquad\text{divide both sides by 2}\\\\x^2+6x-7=0\qquad\text{add 7 to both sides}\\\\x^2+2(x)(3)=7\qquad\text{add}\ 3^2=9\ \text{to both sides}\\\\\underbrace{x^2+2(x)(3)+3^2}_{(*)}=7+9\\\\(x+3)^2=16\Rightarrow x+3=\pm\sqrt{16}\\\\x+3=-4\ or\ x+3=4\qquad\text{subtract 3 from both sides}\\\\x=-7\ or\ x=1$

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4 years ago

Look at question on the image

Sedbober [7]

Answer: 170

Step-by-step explanation:

The formula for the area of a triangle is 1/2bh, where b is the base length, and h is the height.

So- Essentially you’d just need to plug in the variables to solve this. the semicircle on the bottom serves to tell you the base length.

1/2(20)(17)

170

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2 years ago

Josh rents a kayak at a nearby state park. He pays a flat rate of $12.99 plus $3.75 for

tekilochka [14]

12.99+ 3.75x= total. therefore, 12.99+3.75(4)= 27.99

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3 years ago

What is an expression that represents the situation $5.50 divided by $44

Dahasolnce [82]

Answer:

5.50/40

Step-by-step explanation:

5.50 divided by $44

this 5.50/40 is ths same as this

5.50 divided by $44

5.50/40 is your answer

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4 years ago

PLEASE HELP WILL MARK BRAINLIEST !!!

7nadin3 [17]

Answer:

Step-by-step explanation:

We're trying to find the distance between points X and Y. Or the distance of X-Z plus Z-Y.

Lets find the distance of X-Z

6-2=4

Now lets find the distance of Z-Y

15-6=9

Now we add the distances

4+9=13

8 0

1 year ago

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In the example, 16 is what percent of 80? , what does 16 represent in the percent proportion​

In the example, 16 is what percent of 80? , what does 16 represent in the percent proportion