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3 years ago

What value from the set {6, 7, 8, 9, 10} makes the equation 5x + 2 = 47 true? Show your work.

Mathematics

1 answer:

vivado [14]3 years ago

5 0

5x+2=47 subtract 2 from both sides

5x=45 divide both sides by 5

x=9

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Parker is laying pavers to build a patio in his backyard. Each square paver measures 2 feet on each side. He would like the pati

MatroZZZ [7]

Answer:

32 pavers

Step-by-step explanation:

step 1

Find out the area of one square paver

The area of a square is

$A=s^{2}$

where

s is the length side of the square

we have

$s=2\ ft$

substitute

$A=2^{2}\\A=4\ ft^{2}$

step 2

Find out the area of the rectangular patio

we know that

The area of a rectangle is

$A=LW$

we have

$L=16\ ft\\W=8\ ft$

substitute

$A=(16)(8)\\A=128\ ft^2$

step 3

Find out the number of pavers needed to build the patio

Divide the area of the rectangular patio by the area of one paver

$128\ ft^2/4\ ft^{2}=32\ pavers$

5 0

3 years ago

The formula f equals c over lambda, where f = frequency, c = wave speed, and λ = wavelength, is used to calculate frequency. Sol

Alexus [3.1K]

Answer:

B. c = fλ

Step-by-step explanation:

The given equation is

$f=\frac{c}{\lambda}$

To solve for c you must multiply both sides of the equation by lambda.

$f=\frac{c}{\lambda}\\f\lambda=\frac{c}{\lambda}*\lambda \\f \lambda=c$

6 0

2 years ago

Read 2 more answers

I don’t understand the equation

ankoles [38]

you need to find to find the value of x and y.

2x>(-15-5y)

x>(-15-5y)/2

now put this in to other equation and solve for y and then put the y value in and find x.

6 0

3 years ago

Jack’s first weight increased by 20% and then his new weight decreased by 25%. His final weight is what percent of his beginning

ElenaW [278]

Lets suppose his initial weight was 60 kilograms

A gain of 20% would make his new eight 60 + 20*60/100

= 60 + 12

= 72 kg

he lost 25% of this:-

= 72 - 25 * 72/100 = 54 kg

This = (54/60) * 100 = 90% of his beginning weight Answer

8 0

3 years ago

Gas mileage is the number of miles you can drive on a gallon of gasoline.A test of a new car results in 330 miles on 10 gallons

Crazy boy [7]

Gas mileage is the number of miles you can drive on a gallon of gasoline.A test of a new car results in 330 miles on 10 gallons of gas.how far could youdrive on 65 gallons of gas?what is the car's mileage?

u would multiply 330 and 6
then divide 330 in half
330x6=1980
330/2=165
then add those together
and u would get 2145

3 0

3 years ago