Which function has an inverse that is a function?

Us the expression (8x + 2) + (- 9x + 7)

malfutka [58]

Answer:

8x2=16 9x7=63

63+16=79

Step-by-step explanation:

7 0

3 years ago

What percent of 99 is 90?

Yuri [45]

Answer:

91%

Step-by-step explanation:

We can use the formula $\frac{is}{of}=\frac{percent}{100}$

"is" is 90
"of" is 99
"percent" is what we are solving for so we will denote it as x

Substituting in our values we get $\frac{90}{99}=\frac{x}{100}$

We will need to cross multiply here to get (90)(100) = (x%)(99)
This simplifies to 9000 = 99x%
Dividing by 99 on both sides we get 90.9% → x = 91%

4 0

2 years ago

Topic 13 Online Assessment

telo118 [61]

Answer:

Tomas is incorrect.

Step-by-step explanation:

Example : If we divide a cake into 8 pieces and a similar cake is into 4 pieces, a piece of cake taken from 4 pieces will be bigger than a piece taken from 8 pieces.

Similarly, size of 3 pieces of cake taken from 4 pieces will be bigger than the 3 pieces taken from 8 pieces.

Therefore, $\frac{3}{4}$ will be greater than $\frac{3}{8}$ .

Tomas is incorrect.

3 0

3 years ago

Can someone please help.

zvonat [6]

Answer:

8 jars

Step-by-step explanation:

Let the number of jars is x.

80 liters distributed, each jar has:

80/x

Redistribution with 4 less jars, each jar now has:

80/(x - 4)

Each jar has now twice the amount:

80/x*2 = 80/(x - 4)
2/x = 1/(x - 4)
2(x - 4) = x
2x - 8 = x
x = 8

She prepared 8 jars at the start

4 0

3 years ago

A. Name 3 different angles which could have a reference angle of 20 degrees. How did you arrive at this answer?.

IgorC [24]

Answer:

Answer:a. Since 20° is in the first quadrant, the reference angle is 20° .

Answer:a. Since 20° is in the first quadrant, the reference angle is 20° .b. Reference Angle: the acute angle between the terminal arm/terminal side and the x-axis. The reference angle is always positive. In other words, the reference angle is an angle being sandwiched by the terminal side and the x-axis. It must be less than 90 degree, and always positive.

Answer:a. Since 20° is in the first quadrant, the reference angle is 20° .b. Reference Angle: the acute angle between the terminal arm/terminal side and the x-axis. The reference angle is always positive. In other words, the reference angle is an angle being sandwiched by the terminal side and the x-axis. It must be less than 90 degree, and always positive.c. The rays corresponding to supplementary angles intersect the unit circles in points having the same y-coordinate, so the two angles have the same sine (and opposite cosines).

hopefully,

Zara♡

8 0

2 years ago