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MAVERICK [17]
2 years ago
8

HELP PLEASE ! 12) 12 13 + 2) + 9= ?​

Mathematics
2 answers:
Dmitrij [34]2 years ago
7 0
I think I’ll be 11.4
valkas [14]2 years ago
6 0

Answer:

11.9230769231

Step-by-step explanation:

Don't ask I am a smarty

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The difference in the values of dependent variables for a function is increasing as values of the independent variable increase,
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Answer:

B. Exponential

Step-by-step explanation:

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3 years ago
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Roberta has $4.00 in dimes and quarters. She has 5 more dimes than quarters. Write a system of equations that you could use to f
MakcuM [25]

Answer:

\left\{\begin{array}{l}25x+10y=400\\y=x+5\end{array}\right..

Step-by-step explanation:

Let x be the number of quaters and y be the number of dimes Roberta has.

1. Quater is equal to 25 cents, then x quaters is equal to 25x cents. Dime is equal to 10 cents, then y dimes is equal to 10y cents. $4.00=400 cents, then

25x+10y=400.

2. Roberta has 5 more dimes than quarters, then

y=x+5.

3. The system of equations is

\left\{\begin{array}{l}25x+10y=400\\y=x+5\end{array}\right..

Substitute second equation into the first one:

25x+10(x+5)=400,\\ \\25x+10x+50=400,\\ \\35x=350,\\ \\x=10,\ y=10+5=15.

10 quaters and 15 dimes

8 0
3 years ago
Solve for x. <br><br> −2 = 3/9x
dlinn [17]

Answer: -6 That’s your answer.

3 0
3 years ago
Rosa throws a ball. The equation d = −t^2 + 4t + 5 represents the path taken by Rosa's ball where d is the height of the ball (i
satela [25.4K]

Answer:

B

Step-by-step explanation:

-t²+4t+5=0

t²-4t-5=0

t²-5t+t-5=0

t(t-5)+1(t-5)=0

(t-5)(t+1)=0

t=5,-1

when t=0,d=5

actual time it it is in air=5-1=4 seconds.

5 0
2 years ago
Read 2 more answers
Corinne has a job selling magazines. She earns $7.50 per hour plus 20% of the total amount of her sales. She also gets an allowa
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Part A:  Coefficient:  either 7.50 or 0.20
Part B:

7.50 (25) + 0.20 (300) + 40
187.50 + 60 + 40 = $287.50

Part C: After her raise, the first term will change from 7.50h to 9h
4 0
3 years ago
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