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Harman [31]
3 years ago
15

James and his friends are going to buy four new computers for $4,000

Mathematics
1 answer:
Andreyy893 years ago
7 0
They did not meet the goal of 4,000 , they needed $90 more dollars to complete the 4000
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1. The original price of a jacket is $30. The jacket is 20% off. How much is she going to save? Solve
Nina [5.8K]
30(20/100)=600/100=$6.00
6 0
3 years ago
Read 2 more answers
suppose the population of a certain city has been doubling every 30 years and the population was 48,000 in 1900. what will the p
Brilliant_brown [7]

Answer:

768000

Step-by-step explanation:

From 1900 to 2020 = 120 means that it doubles 4 times ( once every 30 years)

=> 48000 * 2 ^ 4 = 768000

3 0
2 years ago
Frankie is on a long car trip. Every time she stops to buy gas, she loses 15 minutes of travel time. If she has to stop 6 times,
pychu [463]

Answer: She will loose 75 min. (1 hour and 15 minutes)

Step-by-step explanation:

5 0
3 years ago
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In the United States, the mean and standard deviation of adult men's heights are 70 inches (5 feet 10 inches) and 4 inches, resp
Artyom0805 [142]

Answer:

P(X>72)=P(\frac{X-\mu}{\sigma}>\frac{72-\mu}{\sigma})=P(Z>\frac{72-70}{4})=P(z>0.5)

And we can find this probability using the complement rule and the normal standard table:

P(z>0.5)=1-P(z

And the best solution would be:

c. 0.3085

Step-by-step explanation:

For this case we can convert all the values to inches in order to standardize the solution:

5ft * \frac{12 in}{1ft}= 60 in

6ft * \frac{12 in}{1ft}= 72 in

Let X the random variable that represent the heights of US mens, and for this case we know the distribution for X is given by:

X \sim N(70,4)  

Where \mu=70 and \sigma=4

We are interested on this probability

P(X>72)

We can use the z score formula given by:

z=\frac{x-\mu}{\sigma}

Using this formula we got:

P(X>72)=P(\frac{X-\mu}{\sigma}>\frac{72-\mu}{\sigma})=P(Z>\frac{72-70}{4})=P(z>0.5)

And we can find this probability using the complement rule and the normal standard table:

P(z>0.5)=1-P(z

And the best solution would be:

c. 0.3085

5 0
3 years ago
A cell phone company dropped the price by 7%. Which expression shows the new price of the phones(p)? A 0.07p B p-1.07 C p-0.07 D
Drupady [299]

Answer:

option D

Step-by-step explanation:

Let the price be p

7% of price = 0.07p

Price after decrease = p - 0.07p

3 0
2 years ago
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