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3 years ago

What is a unit rate?

2 answers:

8 0

The numbers or measurements Being compared or called the terms of the ratio a rate is a special ratio in which the two terms are in different units we can raise our expressed as a quantity of one such as 2 ft./s or 5 mph they are called unit rates

Katyanochek1 [597]3 years ago

5 0

Answer:

unit rate means how much one of an item costs

Step-by-step explanation:

lets say you are at the store, you only want to but one apple, but the price tag is smudged, but the price for five apples, which is $5 is not. Theoretically, if you divide $5 by five since it is 5 apples, you will get $1 for one apple, $1 is the unit price

I hope this helps u

pls give me brainliest, i only need one to level up! and a thx

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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

Which values are solutions to the inequality below? Check all that apply. √x >8

lapo4ka [179]

Answer:

x > 64

therefore, 65 and 66 both apply

Step-by-step explanation:

$\sqrt{x}$ > 8

square each side to get:

x > 64

8 0

3 years ago

A company manufactures a wash-down motor that is used in the food processing industry. The motor is marketed with a warranty tha

scZoUnD [109]

Answer:

a) P [ X ≤ 12000 ] = 0.0262 or 2.62 %

b) P [ X > 16100] = 0,0228 or 2,28 %

X = 13479,2 hours or 13500 hours

Step-by-step explanation:

Normal Distribution

μ₀ = 14000 hours and σ = 1050 hours

a) Probability of X (replacement of motor free of charge)

Z = ( X - μ₀ ) / σ

Z = ( 12000- 14000) / 1050

Z = - 2000/1050

Z = - 1,904

From z Table we get

for z = -1.904 P [ X ≤ 12000 ] = 0.0262

P [ X ≤ 12000 ] = 0.0262 or 2.62 %

b) What % of motors can be expected to operate more than 16100 hours

z = ( 16100 - 14000) / 1050

z = 2100/1050 ⇒ 2

From z table we find with z = 2 total number f motor operating up to 16100 hours

From z table we find 0,9772

Then probability of motors operating for more than 16100 hours is:

P [ X > 16100] = 1 - 0.9772 = 0,0228

Then

P [ X > 16100] = 0,0228 or 2,28 %

c) The average hours of operation before failures if only 1% of motors would be replaced free of charge is:

1% = 0,01 Probability then z score is z = 0,4960

0,4960 = ( 14000 - X ) / 1050

0,4960 * 1050 = ( 14000 - X )

520,8 - 14000 = - X

X = 13479,2 hours as is not common such offer company could set up guarantee for 13500 h

7 0

4 years ago

I WILL MAKE YOU THE BRAINLIEST EASY QUESTION

trapecia [35]

Answer:

You can convert the denominator of each to 16 to compare each fraction. The wrenches should go in order from least to greatest: 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4. Place on number line between 0 and 1. The number line shows values that are least on the left to the greatest values to the right.

Step-by-step explanation:

You can find a common denominator to compare all the fractions. The common denominator should be the LCM or lowest common multiple of 2, 4, 8, and 16. Since all can multiply to 16, this is the common denominator.

1/2 = 8/16

3/4 = 12/16

3/8 = 6/16

5/8 = 10/16

5/16

7/16

9/16

11/16

Now place in order according to the numerator value:

5/16, 6/16, 7/16, 8/16, 9/16, 10/16, 11/16, and 12/16. We'll now write the list using the original fractions instead of their conversions.

5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4

Place these on the number line in order between 0 and 1.

6 0

3 years ago

What is the probability of selection for any man in a proportionate random sample, where a sample of 100 will be drawn from a po

kolbaska11 [484]

Working Principle: Stratified Random Sampling

nx = (Nx/N)*n

where:
nx = sample size for stratum x
Nx = population size for stratum x
N = total population size
n = total sample size

Given:

Nx = 100
N = 1000
n = 0.5*(1000) = 500

Required: Probability of Man to be selected

Solution:

nx = (Nx/N)*n
nx = (100/1000)*500 = 50 men

ny = (Nx/N)*n
ny = (100/1000)*500 = 50 women

Probability of Man to be selected = nx/(nx + ny)*100 = 50/(50+50)*100 = 50%

ANSWER: 50%

7 0

3 years ago