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Zepler [3.9K]
2 years ago
13

-9n+5-3x-6 use n=9 and x=2

Mathematics
1 answer:
Norma-Jean [14]2 years ago
3 0
The answer is -88. change the letters in the equations by the numbers you gave and solve
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Audrey has $111 to spend on a tennis racket and lessons. The racket costs $55 and the lessons cost $14 per hour. Define a variab
Mnenie [13.5K]

Answer:

Audrey can afford 4 hours of lesson.

Step-by-step explanation:

Given that:

Amount Audrey has to spend = $111

Cost of racket = $55

Cost per lesson = $14

Let,

y be the total cost

x be the number of hours

According to given statement;

y = 14x + 55

111 = 14x + 55

111 - 55 = 14x

14x = 56

Dividing both sides by 14

\frac{14x}{14}=\frac{56}{14}\\x=4

Hence,

Audrey can afford 4 hours of lesson.

7 0
3 years ago
-85 divided by 0.4<br> Explain
matrenka [14]

Answer:

-212.5

Step-by-step explanation:

-212.5 x 0.4 = -85

4 0
3 years ago
Write y^2 - y^4 without exponents
True [87]

Answer:

y•y-y•y•y•y

Step-by-step explanation:

y^2 is equal to y•y and y^4 is equal to y•y•y•y.

7 0
3 years ago
PLEASE HELP ME ITS FOR MY TEST SO PLEASE NO WRONG ANSWERS
AveGali [126]

Let's take a look at the exponent rule:

{x}^{a}  \times  {x}^{b}  =  {x}^{a + b}

Her mistake was she multiplied the exponents instead of adding it up.

3 0
3 years ago
What is 2x + 3x + 4x + 5x + 6x + 7x + 8x X 457 I really need help with this
Serggg [28]
You just add up all of the x times by 457, since you combine like terms.
7 0
3 years ago
Read 2 more answers
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