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3 years ago

Solve the proportion: 20/16 = x/80 question 19 options: 6.25 1600 100 160

1 answer:

8 0

$\dfrac{20}{16}=\dfrac{20:4}{16:4}=\dfrac{5}{4}\\\\\dfrac{5}{4}=\dfrac{x}{80}\ \ \ \ |cross\ multiply\\\\4x=5\cdot80\\\\4x=400\ \ \ \ |divide\ both\ sides\ by\ 4\\\\\boxed{x=100}$

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What is 1+9x3(2x+32) plesse help me if you know it thank you for the help.

hjlf

Answer:

18x^4+288x^3+1

Step-by-step explanation:

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3 years ago

Read 2 more answers

You are running a fuel economy study. One of the cars you find is blue. can travel 35 1/2 miles on 1 1/4 gallons of gasoline. An

IgorLugansk [536]

Answer:

1) 28.4 miles per gallon

2) 34 miles per gallon

3) the red car

Step-by-step explanation:

We have the following information:

Blue car:

Travels 35 1/2 miles on 1 1/4 gallons of gasoline

Red car:

Travels 27 1/5 miles on 4/5 gallons of gasoline

We want to know the unit rate for miles per hour, and to do it we have to divide the miles they travel by the gallons each car uses:

Blue car:

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Red car:

(27 1/5) / (4/5) = 34 miles per gallon

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8 0

4 years ago

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A restaurant offers a choice of 4 salads, 9 main courses, and 4 desserts. How many possible 3-course meals are there

Sergeu [11.5K]

Answer:

144

Step-by-step explanation:

Multiply each option together 9X4X4=144

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=5y%2B7%20%5Cleq%20-3%20or%203y%20-2%20%5Cgeq%2013" id="TexFormula1" title="5y+7 \leq -3 or 3y

liberstina [14]

5y + 7 < = -3
5y < = -3 - 7
5y < = -10
y < = -10/5
y < = -2

3y - 2 > = 13
3y > = 13 + 2
3y > = 15
y > = 15/3
y > = 5

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4 years ago

I need help ASAP PLEASEEE!

sergeinik [125]

Answer:

The fourth number line is the answer.

Step-by-step explanation:

$- 18 > - 5x + 2 \geqslant - 48 \\ ( - 18 - 2) > - 5x \geqslant ( - 48 - 2) \\ - 20 > - 5x \geqslant - 50 \\ \\ \frac{ - 20}{ - 5} > x \geqslant \frac{ - 50}{ - 5} \\ \\ 4 > x \geqslant 10$

6 0

3 years ago