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Allushta [10]
3 years ago
9

How many times does 13 go into 80

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0
13 x 6 = 78 it cant be multiplied anymore so it can go into 80 about 6 times.
Rashid [163]3 years ago
5 0
6 times
so i multiply 13×6=78 if you do 13×7=91 that will be over 80 so yor answer is 78
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neonofarm [45]

Answer:

-9

Step-by-step explanation:

9=b-2b

9=-b

divide both sides by -

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7 0
2 years ago
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Ashwin helps paint a square mural in his classroom. Then he helps paint a mural in the hallway whose length is 7 feet longer and
Serhud [2]

Ashwin paints 2 murals:

  1. A square mural in his classroom
  2. A mural in the hallway with length 7 feet longer and width 3 feet shorter

Also, x indicates the side length of the mural in the classroom. Since the classroom mural is square in shape, the length and breadth of the mural would be x.

Part A: Expression to represents the two binomials to be multiplied to find the area of the hallway mural

Area of the hallway mural = Length of the hallway mural × Breadth of the hallway mural

So Length of the hallway mural = Length of the classroom mural + 7

⇒ Length of the hallway mural = x + 7

Breadth of the hallway mural = Breadth of the classroom mural - 3

⇒ Breadth of the hallway mural = x - 3

Hence, x + 7 and x - 3 need to be multiplied to determine the area of the mural

Part B: Area of the hallway mural

Area of the hallway mural = Length of the hallway mural × Breadth of the hallway mural

⇒ Area of the hallway mural = (x + 7) × (x-3)

⇒ Area of the hallway mural = x² + 7x - 3x - 21

⇒ Area of the hallway mural = x² + 4x - 21

Part C: Area of the hallway mural if each side of the classroom mural is 8 foot long

Putting the value x = 8 in the answer of Part B

⇒ Area of the hallway mural = 8² + 4×8 - 21

⇒ Area of the hallway mural = 64 + 4×8 - 21

⇒ Area of the hallway mural = 64 + 32 - 21

⇒ Area of the hallway mural = 75 square feet


3 0
3 years ago
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Ivanshal [37]

Answer:

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$36.30

4 0
3 years ago
Find the equation of the line specified. The line passes through the points (7, -7) and (6, -5)
vova2212 [387]

Answer:

a. y = -2x + 7

Step-by-step explanation:

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3 years ago
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lana66690 [7]

Answer:

x = -2

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Step-by-step explanation:

i multiplied the 1st equation by 3 and the 2nd by 5 to get the y-terms to zero out

   12x + 15y = 66

+  <u>35x - 15y = -160</u>

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x = -2

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3 0
3 years ago
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