07/22/19

#### Please help me with this statistics question

A survey showed that 76% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 19 adults are randomly selected, find the probability that no more than...
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07/22/19

#### A bottle of medication contains 16 ml, which is 20% less than a syringe containing the same medication. How much does the syringe contain?

18.0ml18.2ml19.2ml20.0ml

06/08/19

#### cos(a-b)cos(b)-sin(a-b)sin(b)

i dont have the greek symbols but what would this be simplified using only one expression???

#### Solving a work problem using a rational equation

For a certain bathtub, it takes the hot water faucet 3 times as long to fill the tub as it does the cold water faucet. Left on together, the two faucets take 6 minutes to fill the tub. How long...
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08/08/16

#### If 500 fuses are produced each day, how many can we expect to find each day that are defective ?

Consider the following binomial experiment: The probability that a fuse produced by a certain company will be defective is 37⁄100.

08/08/16

#### If there are 10,300 people in this community, what is the standard deviation of the number of people who suffer from insomnia?

Consider the following binomial experiment: A study in a certain community showed that 9% of the people suffer from insomnia.

08/08/16

#### What is the sample portion?

A politician claims that the majority of americans approve of a public health care option. A survey of 500 randomly selected adults found that 346 approve of a public health care option.

07/25/16

#### One integer is 8 less than another integer. The product of the lesser integer and -5 and 28 more than the greater integer. What are the integers?

One integer is 8 less than another integer. The product of the lesser integer and -5 and 28 more than the greater integer. What are the integers?

07/08/16

#### 7 hours 8 9.4

Greg drove at a constant speed in a rainstorm for 250miles. He took a? break, and the rain stopped He then drove 112 miles at a speed that was 6miles per hour faster than his previous speed. If he...
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06/22/16

#### (1/tan x) + (tan x)= (1/ sin x cos x)

I am to prove this identity to be correct. And I don't know what side to begin with...since I started with the left and made tan into sin/cos.

06/22/16

#### im not sure how to do this question

The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.933 g and a standard deviation of 0.308 g. Find the probability of randomly selecting a cigarette...
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06/22/16

#### Polynomial

On a map, Detroit, Michigan, Ann Arbour, Michigan and Toledo, Ohio form the vertices of a right triangle. The distance between Ann Arbour and Toledo is 11 miles more than distance between Ann...
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06/22/16

#### How many arrangements of five letters from the word certain contain the letter T?

How many arrangements of five letters from the word certain contain the letter T?

06/21/16

#### mathematics data

a committee of six people is formed to investigate connections between business and the education system. it consists of people chosen from 5 students, 8 teachers, 5 principles, 10 parents, 4...
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06/21/16

#### math help!

Nick has been looking for a new car. He decides to buy a small SUV for $35 000. It is known that the SUV will depreciate by 20% of its current value every year.a) Write an equation to relate the...
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06/07/16

#### what is the distance from the top of this 732 ft building to the horizon to the nearest mile? (5280 ft=1 mi; radius of eath=4000 mi)

what is the distance from the top of this 732 ft building to the horizon to the nearest mile? (5280 ft=1 mi; radius of eath=4000 mi)

06/07/16

#### Algebra one

A fountain on a lake sprays water in a parabolic arch modeled by the equation y = -0.3x^2 + 3x. A beam of light modeled by the equation -2x + 5.5y = 19.5 passes through the fountain to create a...
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06/06/16

#### Which one is the cheapest?

The total area of the pool is 9000 + 4500
The floor and the walls of the swimming pool need to be covered with tiles. Decide which of the following companies would be the cheapest:“Everlasting...
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06/06/16

#### the following function gives the U.S population t years after 1800. In what year will the population reach 144.7 million people? P(t)=189.4/1+34.74e^-0.031476t

I am unsure on where I am suppose to pluggin the numbers. For instance I think that I should take 2016-1801 to obtain the number of years and plug my answer to P(t). However the 144.7 million I...
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06/03/16

#### How do you evaluate this logarithm?

loga48 - loga3/loga2
Can you please provide working out and an explanation?

06/03/16

#### y varies inversely

If y varies inversely with the square of? x, and y=14when x=5 find y when x=0.2

05/24/16

#### Cali owns a campground, and has installed a rectangular swimming pool measuring 10m by 20m. She wants to put a wooden deck with a uniform width around the swimm

Cali owns a campground, and has installed a rectangular swimming pool measuring 10m by 20m. She wants to put a wooden deck with a uniform width around the swimming pool. Cali budgeted $1920 to...
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