3 years ago

Can someone help me with 21

Mathematics

1 answer:

Darina [25.2K]3 years ago

3 0

B cuz we *3*3*3 to reach to n 7

You might be interested in

A pound of chocolate costs 8 dollars. Kelsha buys p pounds. Write an equation to represent the total cost c that Keisha pays.

mote1985 [20]

The equation would be 8 times the amount of pounds bought equals the amount paid.

<h2>Answer:</h2>

8p = c

5 0

3 years ago

8 A video game that usually costs $50 is on sale for $32.50

finlep [7]

The video game is on 35% discount.

Step-by-step explanation:

Cost of video game = $50

Price on sale = $32.50

Amount of discount = Original price - price on sale

$Amount\ on\ discount = 50-32.50\\Amount\ on\ discount= \$17.5$

Percentage = $\frac{Dicount\ Price}{Original\ Price}*100$

$Percentage=\frac{17.5}{50}*100\\Percentage=\frac{1750}{50}\\Percenatge=35\%$

The video game is on 35% discount.

Keywords: Percentage

Learn more about percentages at:

#LearnwithBrainly

6 0

3 years ago

Given the function f(x) = 4(x+3) − 5, solve for the inverse function when x = 3.

Dimas [21]

Hello,

f(x)=4(x+3)-5=4x+12-5=4x+7

y=4x+7==>c=(y-7)/4

f^(-1)(x)=(x-7)/4
f^(-1)( 3)=(3-7)/4=-4/4=-1

Answer D

4 0

3 years ago

Which graph shows the solution to the system of equations 2x + y = 4 and 3x - 2y = 6?

defon

Answer: 2,0

hope this helps :)

4 0

3 years ago

The population of city is 2500 if the number of males is 240 more than females how many males and females are there in the city?

Blizzard [7]

There are 1130 females. There are 1370 males. What I did was take 2500 and subtracted 240 from it. I got 2260 and then divided that number by 2 and got the number of females. Then I took that number and added 240 to it and got the number of males.

5 0

3 years ago