3 years ago

WILL MARK BRAINLIEST!

Mathematics

1 answer:

ddd [48]3 years ago

4 0

<u><em>Sheridan is correct!</em></u>

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angie andKenny play online video games angie buys 1 software package and 3 months of game play. Kenny buys 1 software package an

Shkiper50 [21]

Angie buys 1 software package and 3 months of game play
Kenny buys 1 software package and 4 months of game play
price of each software package = $20
total cost = $117
cost of one month game play = ?
let y is the cost of one month play
Angie buys 3 months game play and paid $20 = 20 + 3y
Kenny buys 4 months game play and paid $20 = 20 + 4y
total cost of both is $117
So the equation becomes,
(20 + 3y) + (20 + 4y) = 117
7y + 40 = 117
7y = 117 - 40
7y = 77
dividing with 7 on both sides, we get
y = 11
so, $11 is the cost of one month game play

5 0

3 years ago

Jenny is saving money to buy a game. So far she has saved $12, which is one-fourth of the total cost of the game. How much does

7nadin3 [17]

Answer:

1/4th of total cost = $12

for total cost = $12 X 4

= $ 48

the game cost is $48

7 0

3 years ago

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Johnny answered 40 questions correctly on his 60 question test. What percent of questions did Johnny answer correctly?

Rzqust [24]

Answer:

66.6%

Step-by-step explanation:

40/60=4/6=2/3

2/3=66.6

4 0

3 years ago

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The ratio 25:45 in simplest form is

stepladder [879]

25/45=(5∗5)/(5∗9)=5/9

5/9 is the answer.

5 0

3 years ago

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Find the inverse of the following function:

tigry1 [53]

First, we are going to find the inverse function of $f(x)$ by replacing $f(x)$ with $y$ , and then, interchanging $x$ and $y$ and solving for $x$ :
$y=-2 \sqrt{3x-1} -5$
$x=-2 \sqrt{3y-1} -5$
$-2 \sqrt{3y-1} =x+5$
$\sqrt{3y-1} = \frac{x+5}{-2}$
$3y-1=( \frac{x+5}{-2} )^{2}$
$3y=( \frac{x+5}{-2} )^{2} +1$
$y= \frac{( \frac{x+5}{-2})^{2}+1 }{3}$

Next we are going to evaluate our inverse function at $x= \frac{1}{3}$ :
$y= \frac{( \frac{ \frac{1}{3}+5 }{-2})^{2}+1 }{3}$
$y= \frac{( \frac{ \frac{16}{3} }{-2})^{2}+1 }{3}$
$y= \frac{(- \frac{8}{3})^{2}+1 }{3}$
$y= \frac{ \frac{64}{9}+1 }{3}$
$y= \frac{ \frac{73}{9} }{3}$
$y= \frac{73}{27}$

We can conclude that the inverse function of $f(x)=-2 \sqrt{3x-1} -5$ when $x= \frac{1}{3}$ is $\frac{73}{27}$

5 0

3 years ago