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Stels [109]
3 years ago
12

Can someone answer this:

Mathematics
1 answer:
ASHA 777 [7]3 years ago
3 0
4.00 ÷ 0.25 = 16
.70 ÷ 0.05 = 14

16 quarters + 14 nickels = 30 coins
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If car can travel 50 miles in 55 minutes, how long will it take to travel 75 miles ?
mrs_skeptik [129]
First of all, if you are traveling more, then you will have to take more time to get there. So since the answer A is less than the original number 50 you can rule that choice out. Now to solve, you will put 50 over 55 such as this 50/55. This represents miles/minutes. So next you will put 75/x since we are trying to solve for x (minutes). Now our problem looks like this 50/55 times 75/x. To solve the answer you will need to cross multiply. You will multiply 75 and 55 together to get 4,125. (This will be your numerator, or top number) Next you will multiply 50 and x, this gives you 50. (This will be your denominator, or bottom number. Now you have 4,125/50. Divide your two numbers and you get 82.5! The answer is D. 82.5! Hope I helped!
7 0
3 years ago
PLEASE HELP! MY FRIEND AND I CANT FIGURE THIS OUT!!! i attached a picture of the question please help us
Svet_ta [14]

We got a three 18 of 80 times,

rel freq = 18/80 = 22.5%

6 0
4 years ago
There are 188 people on the trip and their total cost for the bike tour was $5040. There were twelve more adults than seniors on
zavuch27 [327]

Answer:

The answer to your question is there were 88 children

Step-by-step explanation:

Data

Total number of people = 188

total cost = $5040

12 more adults than seniors

number of children = ?

adults = a

children = c

Process

1.- Write equations that help to solve this problem

             a + c = 188              Equation l

             a = c + 12                 Equation ll

2.- Solve by substitution. Substitute equation equation ll in equation l

           (c + 12) + c = 188

-Solve for c

            c + 12 + c = 188

            2c + 12 = 188

            2c = 188 - 12

            2c = 176

              c = 176 / 2

              c = 88

3.- Conclusion

There were 88 children

       

5 0
3 years ago
If f(x) is a function and f(1) = 5, then which of the following could not be true?
Natasha_Volkova [10]
It can't be f(1) = 1 because a function can't have two images on the same x.
8 0
3 years ago
Read 2 more answers
Assume that adults have IQ scores that are normally distributed with a mean of mu equals 105 and a standard deviation sigma equa
kondor19780726 [428]

Answer:   0.6827

Step-by-step explanation:

Given : Mean IQ score : \mu=105

Standard deviation : \sigma=15

We assume that adults have IQ scores that are normally distributed .

Let x be the random variable that represents the IQ score of adults .

z-score : z=\dfrac{x-\mu}{\sigma}

For x= 90

z=\dfrac{90-105}{15}\approx-1

For x= 120

z=\dfrac{120-105}{15}\approx1

By using the standard normal distribution table , we have

The p-value : P(90

P(z

Hence,  the probability that a randomly selected adult has an IQ between 90 and 120 =0.6827

5 0
3 years ago
Read 2 more answers
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