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Vesnalui [34]
3 years ago
5

Tony’s class needs more than $500 for the school dance. So far, they have raised $200. They plan to have a car wash, charging $8

a car, to raise more money. Tony solved the inequality 8x + 200 Greater-than-or-equal-to 500, and determined that if they wash 37 cars, they will have enough money. Is he correct? Explain.
Mathematics
2 answers:
ExtremeBDS [4]3 years ago
6 0

Answer:

no, tony is not correct. solving the inequality tells us that x is greater than or equal to 37.5. since the class must wash a whole number of cars, they need to wash at least 38 cars.

Step-by-step explanation:

anzhelika [568]3 years ago
3 0
<h2><em><u>PLZ MARK BRAINLIEST</u></em></h2><h2><em><u></u></em></h2>

No, he is not correct for if they washed 37 cars they would have made a total of 296 dollars washing cars. Because this is an inequality, he needs to get a value equal too or greater than 300 dollars on car washes. Also, because he already has 200 dollars collected, you could write the inequality as "8x is greater than or equal to 300".

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You invest an initial $2,000 in an account that has an annual interest rate of 6%, compounds daily. How much money will you have
Vlad1618 [11]
2000(1+0.06/360)^15*360=??
5 0
3 years ago
Help help needed for composition of function
dimulka [17.4K]

Answer:

\circledast \ \ f\circ f\left( x\right) = x

\circledast \ \ g\circ g\left( x\right)  =4x - 21

Step-by-step explanation:

f(x)=\frac{5}{2x}

g(x) = 2x - 7

==============

f\circ f\left( x\right)  =\frac{5}{2\left( f\left( x\right)  \right)  }

             =\frac{5}{2\left( \frac{5}{2x}  \right)  }

             =\frac{5}{\left( \frac{5}{x}  \right)  }

             =5\times\frac{x}{5}

             =x

_____________

g\circ g\left( x\right)  =2(g(x)) - 7

            = 2(2x - 7) - 7

           = 4x - 14 - 7

           = 4x - 23

3 0
2 years ago
If 6/10 = 21/K what is K​
timama [110]

You can cross multiply for this problem. So:

\frac{6}{10}=\frac{21}{K}\\6K=210\\K=35

So K=35!

Hope this helps! :)

3 0
3 years ago
A baseball team won 22 of the first 40 games it played. If the team's wins and losses continue at the same rate, how many games
Triss [41]
This game isn't too bad.
We have a proportion which represents another number. 

Basically the problem states that the ratio: 
22/40 is applicable to the ratio of:
# Wins / # Games 

I'll represent the # Wins with the letter W.
and I'll represent the # of Games with the letter G. 

So we simply set them equal to each other. 

22/44 = W / G

They gave us G = 162 games

22 / 44 = W / 162

Cross multiply. So, the denominator on the left side of the equation will multiply with the numerator on the right. While the denominator on the right multiplies with the numerator on the left. 

44*W = 22*162

You'll probably need a calculator for 22*162, but you can use long multiplication if it isn't allowed. 

44W = 3564

Divide 44 on both sides. 

W = 3564 / 44 

W = 81

C. 81 is our answer!
5 0
3 years ago
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