3 years ago

If f(x) = x2 -1, what is the equation for f–1(x)?

1 answer:

6 0

-1(1)=(2)-1 because you replace x with one since there is no number in front then you solve -1=-2 but make sure to multiply those four #'s

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A 25 foot ladder is leaning against a house. It makes a 75 degree angle with the ground. How far is the base of the ladder from

Oduvanchick [21]

Look at the picture.

$\cos 75^\circ =\frac{x}{25} \\
25 \cos 75^\circ = x \\
25 \times 0.2588 \approx x \\
x \approx 6.47$

The base of the ladder is 6.47 feet from the house.

4 0

4 years ago

If n represents a number, then write an expression for the difference of three times the number after it was increased by 3 and

faust18 [17]

• Increased by 3
n+3
• Twice the number
2(n+3)
• Three times the number
3n
• Final result
2(n+3)-3n

5 0

3 years ago

In April, Phillipa rode 13.5+8.7+11.1 miles on her bicycle. In March, she rode ( 13.5 + 8.7 + 11.1) ÷ 2 miles, and in May, she r

Zina [86]

Answer:

Rode most in May, 133.2 miles

Rode least in March, 16.65

133.2 - 16.65 = 116.55

8 x farther

Step-by-step explanation:

8 0

3 years ago

if you multiply the number by 2 and add 4, then result you get will be the same as three times the number decreased by 7.

liraira [26]

Answer:

Step-by-step explanation:

Let the number be x,

2x+4 = 3x-7

Collect like terms

2x-3x= -4-7

-x =. -11

Multiply both sides by -1

x. =. 11

PLEASE MARK BRAINLIEST.

5 0

3 years ago

Find the mean of the following<br> data set.<br> 1,1,2,4,6,7,7,8,9,10,12,13,17,17,18

lisabon 2012 [21]

Answer:

8.8

Step-by-step explanation:

Add all numbers together to get 132

All number of numbers together to get 15

Divide the sum of all numbers by the number of numbers:

132/15

8.8

pls mark brainliest!

6 0

2 years ago