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Sunny_sXe [5.5K]
3 years ago
7

PLSSS HELP MY TEST IS ALMOST OVER

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
8 0
I think the answer is b
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8. A triangle has sides with lengths of 6, 8, and 10 units, and a square has a
svet-max [94.6K]

Difference between the area of the triangle and square is 25

Step-by-step explanation:

  • Step 1: Find the area of the triangle given its 3 sides using the Heron's formula.

Area of the triangle = \sqrt{s (s-a)(s-b)(s-c)} where s = \frac{a + b + c}{2}

⇒ s = (6 + 8 + 10)/2 = 24/2 = 12

\sqrt{s(s-a)(s-b)(s-c)} = \sqrt{12(12-6)(12-8)(12-10)}

                                    = \sqrt{12(6)(4)(2)} = \sqrt{576} = 24 sq. units

  • Step 2: Find the area of the square with perimeter = 28 units.

Perimeter of the square = 4 × side = 28

⇒ Side of the square = 28/4 = 7 units

⇒ Area of the square = (side)² = 7² = 49 sq. units

  • Step 3: Find the difference between the area of the square and triangle.

Difference = 49 - 24 = 25

8 0
3 years ago
The cost, y, of red apples can be represented by the equation y = 2x, where x
Temka [501]

Answer:

red apples

Step-by-step explanation:

1 lb of green apples is 1.5

1 lb of red apples is 2

6 0
2 years ago
A department store sells red and blue shirts. A pack of 4 red shirts costs $53.48 and a pack of 12 blue shirts costs $58.20. Wha
sergij07 [2.7K]
Difference means subtraction. So you take $58.20-$53.48 and you get $4.72.
5 0
2 years ago
THIS IS SO IMPORTANT PLZ HELP
Varvara68 [4.7K]

Step-by-step explanation:

{b}^{2}  - 12a

where

a =  \frac{1}{4}  \\  \\ b = 8

{8}^{2}  - 12 \times  \frac{1}{4}  \\  \\ 64 - 3  \times 1 = 64 - 3 = 61

6 0
2 years ago
Read 2 more answers
What is ​ 7/10 ​ expressed as a decimal?
Jlenok [28]
The answer to your problem is 7/10=0.7

7/10 as a decimal is 0.7


7 0
3 years ago
Read 2 more answers
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