Math

Question 1

A right triangle has leg of length 3 and a hypotenuse of length 4. What is the length of the other side?

Answer 1

x= root square of 7

Question 2

If n is a positive real number, what is the simplest way to express n^2 x n^3?

Answer 2

N^5

Question 3

The average of 3 consecutive even integers is 80. What is the least of these integers?

Answer 3

78

ex: 78,80,82

Question 4

Stephanie bought a sweater for $42.40, including a 6% sales tax.What was the price before tax?

Answer 4

$42.40=(1.06)(x)

$40.00=x

Question 5

Shaquille O’Neal made 4 of his first 12 free throws. How many consecutive shots X must he hit for his free-throw percentage to reach 60%?

Answer 5

(4+x) =(12+x) (.6)
4+x =7.2+.6x
.4x+4=7.2
.4x=3.2
   x=8

Question 6

The Triangle Inequality

Answer 6

l B-A l < C < l B+A l

Question 7

A set consists of the integers from -12 to n. If the sum of the members of that set is 42, how many integers are in the set?

Answer 7

28
Remember that the sum of the numbers from -12 to 12 is 0. 13+14+15 =42 so n is 15.
To find the number of integers in the set, just subtract the first from the last and add 1.

Question 8

If the third Friday in January occurs on the 15th, what is the date of the fourt Wednesday in January?

Answer 8

27th.

Draw the Calender

Question 9

Percent Change

Answer 9

(final-original)/original then time 100

Question 10

What do when given doman and equation then ask for range?

Answer 10

Plug in the domain in the equation then solve for range