07/22/19

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... more

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???

06/07/19

#### 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... more

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.

08/04/16

#### Product of X and y

If X+y=7 and X-y=9, find the product of x and y.

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?

07/11/16

#### factor the trinomial x^2+ 16x + 7

need help with this

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... more

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... more

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... more

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... more

06/21/16

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