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3 years ago

Rosetta drove her car 160 miles in 2 hours. Which of the following correctly expresses her rate as a ratio?

2 answers:

7 0

Rosetta drove her car 80 miles in one hour. Assuming that you ate talking about miles per hour you decide 160÷2=80 therefore, she drove 80 miles per hour (80/mph)

iren2701 [21]3 years ago

4 0

Answer:

The correct answer is,

The rate of ratio of Rosetta's car = 80 miles per hour

Step-by-step explanation:

Formula:-

Speed = Distance /Time

It is given that,Rosetta drove her car 160 miles in 2 hours.

To find the speed of car

Speed = Distance /Time

Distance = 160 miles

Time = 2 hours

Speed = 160/2 = 80 miles per hour.

Therefore the rate of ratio of Rosetta's car = 80 miles per hour

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Write.82 as a percent and a fraction.

Marizza181 [45]

Answer:

82% and 82/100 (or 41/50)

Step-by-step explanation:

multiply 100 times .82 to get the percent

.82 is 82/100

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2 years ago

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Step-by-step explanation:

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2 years ago

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3(x 2) 11 is greater than 20

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3(x+2)+11>20
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2 years ago

A bag contains different colored candies. There are 50 candies in the bag, 28 are red, 10 are blue, 8 are green and 4 are yellow

Mrrafil [7]

Answer:

$\displaystyle \frac{54}{5405}$ .

Step-by-step explanation:

How many unique combinations are possible in total?

This question takes 5 objects randomly out of a bag of 50 objects. The order in which these objects come out doesn't matter. Therefore, the number of unique choices possible will the sames as the combination

$\displaystyle \left(50\atop 5\right) = 2,118,760$ .

How many out of that 2,118,760 combinations will satisfy the request?

Number of ways to choose 2 red candies out a batch of 28:

$\displaystyle \left( 28\atop 2\right) = 378$ .

Number of ways to choose 3 green candies out of a batch of 8:

$\displaystyle \left(8\atop 3\right)=56$ .

However, choosing two red candies out of a batch of 28 red candies does not influence the number of ways of choosing three green candies out of a batch of 8 green candies. The number of ways of choosing 2 red candies and 3 green candies will be the product of the two numbers of ways of choosing

$\displaystyle \left( 28\atop 2\right) \cdot \left(8\atop 3\right) = 378\times 56 = 21,168$ .

The probability that the 5 candies chosen out of the 50 contain 2 red and 3 green will be:

$\displaystyle \frac{21,168}{2,118,760} = \frac{54}{5405}$ .

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3 years ago

Which of the following represents "the square of the sum of a number and 4 is 36"? x2 + 42 = 36 x2 + 4 = 36 (x + 4)2 = 36

MrRa [10]

"the square of the sum of a number and 4 is 36"
=
(x + 4)^2 = 36

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2 years ago

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