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Scrat [10]
3 years ago
14

Mary wants to get spray foam insulation in her attic space. Shown here is a diagram of her attic - how much spray foam does she

need to buy

Mathematics
1 answer:
Marianna [84]3 years ago
4 0

Answer:

455

Step-by-step explanation:

(1/2(10)(70))13

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Find the value of x.
castortr0y [4]

Answer: x= 19


Step-by-step explanation:

RS =~ ST presumably reads segment RS is congruent to segment ST, i.e. the same length.

Then the triangle is isosceles, and angle SRT = angle STR. Angle STU = 180-angle STR.


SRT = 3x - 48, STU = 9x, so STR = 180-9x

SRT = STR

3x - 48 = 180 - 9x

3x + 9x = 180 + 48

12x = 228

x = 19


7 0
3 years ago
5 less than a number is equivalent to 1 more than three times the number
kifflom [539]

Answer:

x-5=3x+1 (x=-3)

Step-by-step explanation:

5 less (_-5)

than a number (x)

is equivalent to (=)

1 more than (+1)

than three times the number (3x)

combine them all to get x-5=3x+1

extra:

add 5 to each side x=3x+6

subtract x from each side 0=2x+6

subtract 6 from each side -6=2x

divide each side by 2 -3=x

6 0
3 years ago
Kathy is baking 3 apple pies. Each pie requires 2 3/4 pounds apples. Apples cost $2.49 a pound. About how much will Kathy spend
salantis [7]

<em>Answer</em><em>:</em>

<em>$</em><em>2</em><em>0</em><em>.</em><em>5</em><em>5</em>

<em>Explanation</em><em>:</em>

  • 1apple pie needs 2/3/4pounds of apple
  • 1pound cost $2.49
  • 2/3/4 = ?
  • 2/3/4 ×2.49
  • =$6.85 for one pie
  • For 3 pies ,
  • =$6.85×3
  • = $20.55
8 0
3 years ago
Hank wants to divide 345 pieces of construction paper evenly among his 23 classmates how many pieces will be left over?
Alborosie
There will not be any pieces left over. 23 divides into 345 evenly, to get 15 pieces per person. Hope that helps!
7 0
3 years ago
Identify the missing side length using a scale factor of 1.5
FromTheMoon [43]
Would it be 6.5 since the scale factor is 1.5 and its added to the 3 to get 4.5? correct me if i’m wrong
5 0
3 years ago
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