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2 years ago

Which inequality represents all the solutions of -5x + 5 > 160 - 10x?

Mathematics

2 answers:

Alexxandr [17]2 years ago

8 0

Answer:

The answer is c.

Step-by-step explanation:

-5x + 5 > 160 - 10x

5x > 155

x > 31

klio [65]2 years ago

6 0

The person who answered is right

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sweet-ann [11.9K]

Answer:

22 1/2

Step-by-step explanation:

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2 years ago

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One of the valves on the Hoover Dam releases 40,000 gallons per second. What is the rate in gallons per minute

postnew [5]

There are 60 seconds in a minute. there are 40,000 in a second. That means we have to multiply that by 60.

60*40,000= 2,400,000

The answer is 2,400,000 gallons per minute.

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2 years ago

The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past

galina1969 [7]

Complete Question

The complete question is shown on the uploaded image

Answer:

1 ) The correct option B

2) The correct option is C

3) The correct option is C

4) The correct option is C

Step-by-step explanation:

From the question we are told that

The proportion that own a cell phone is $p = 0.90$

The sample size is n = 15

Generally the appropriate distribution for X is mathematically represented as

$X \ is \ B( n , p )$

$X \ is \ B( 15 , 0.90 )$

Generally the number students that own a cell phone in a simple random sample of 15 students is mathematically represented as

$\mu = n * p$

$\mu = 15 * 0.90$

$\mu = 13.5$

Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as

$\sigma = \sqrt{ n * p * q }$

Where q is mathematically evaluated as

$q = 1- p$

$q = 1- 0.90$

$q = 0.10$

$\sigma = \sqrt{ 15 * 0.90 * 0.10 }$

$\sigma = 1.16$

Generally the probability that all students in a simple random sample of 15 students own a cell phone is mathematically represented as

$P(X = 15) = \left 15} \atop {}} \right.C_{15} * p^{15} * q^{15 - 15}$

$P(X = 15) = \left 15} \atop {}} \right.C_{15} * (0.90)^{15} * (0.10 )^{15 - 15}$

From the combination calculator is $\left 15} \atop {}} \right.C_{15} = 1$

$P(X = 15) = 1 * 0.205891 * 1$

$P(X = 15) = 0.206$

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2 years ago

Next week the store is going to reduce the price from $42 to $31.50. Calculate what percent the sale price is of retail price.

Studentka2010 [4]

Answer:

13.23 is 31.50 percent of 42 and the price they dropped down was $10.5

Step-by-step explanation:

hope this helps pls mark me as brainliest! :)

8 0

2 years ago

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Enter the<br> value of p so that the expression<br> 3(n + 5) is equlvalent to (n + p)3

MA_775_DIABLO [31]

Answer:

p=5

Step-by-step explanation:

a(x+y) is also (x+y)a

So if 3(n+5) has to be equivalent to (n+p)3, then p has to be 5.

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hope it helps

8 0

2 years ago