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babunello [35]
3 years ago
11

Marcy played the piano for 45 minutes.She stopped playing at 4:15 P.M.At what time did she start playing the piano

Mathematics
1 answer:
musickatia [10]3 years ago
3 0
15-45=-30
60-30=30
so the answer is 3:30
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Por favor ayuda casi no entiendo álgebra me pueden ayudar ¡¡¡
Fynjy0 [20]
That’s the answer for that question

7 0
3 years ago
Solving rational equations<br><br> solve for x: 3/x-4=7/x
KIM [24]

Solving the rational equation \frac{3}{x-4}=\frac{7}{x} the value of x is 7

Step-by-step explanation:

We need to solve rational equation: \frac{3}{x-4}=\frac{7}{x} and find value of x.

Solving:

\frac{3}{x-4}=\frac{7}{x}

Cross multiplying:

3(x)=7(x-4)\\Simplifying:\\3x=7x-28\\3x-7x=-28\\-4x=-28\\x=-28/-4\\x=7

So, value of x = 7.

Solving the rational equation \frac{3}{x-4}=\frac{7}{x} the value of x is 7

Keywords: Solving the rational equation

Learn more about Solving the rational equation at:

  • brainly.com/question/13168205
  • brainly.com/question/1757979
  • brainly.com/question/2456302

#learnwithBrainly

8 0
2 years ago
Read 2 more answers
3x−12≥15<br><br> 2x−5≤9<br><br> 5x+8≤53<br><br> 3x−5≥16
zalisa [80]

Answer:

Step-by-step explanation:

A) 3x−12≥15

3x ≥ 15 + 12

3x ≥ 27

or x≥ 9

B) 2x−5≤9

2x ≤ 9 +5

2x ≤ 14

or x ≤ 7

C) 5x+8≤53

5x ≤ 53 -8

5x ≤ 45

or x ≤ 9

D) 3x−5≥16

3x ≥ 16 + 5

3x ≥ 21

or x ≥ 7

Have a good day!

8 0
3 years ago
How to find the exact answer of the area and circumference
Paha777 [63]

Answer:

\pi \\ is irrational so any attempt to use 3.14... is never EXACT...

do not try to convert it ... if it asks for exact..

write 81\pi \\  or 9 \pi \\  etc. don't put in 63.62 like answers

Step-by-step explanation:

6 0
2 years ago
PLS HELP ASAP PLS PLS PLS
Amanda [17]

0=0

Step-by-step explanation:

4(×+3)=4x+12

4x+12=4x+12

Subtract 12 from both sides of the equation

4x+12-12=4x+12-12

simplify

4x=4x

Subtract 4x from both sides of the equation

4x-4x= 4x-4x

Simplify and combine like terms

0=0

8 0
2 years ago
Read 2 more answers
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