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beks73 [17]
3 years ago
5

Finding area of triangles

Mathematics
1 answer:
Murrr4er [49]3 years ago
6 0

Answer:

1. 85 in2

2. 142.5 mm2

3. 110.5 mm2

4. 9 km2

5. 924 mm2

6. 104.5 m2

7. 3,116 ft2

8. 171 m2

9. 78 km2

10. 4,050 ft2

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Help.....................
eduard

Answer:

Answers in Explanation

Step-by-step explanation:

First Question:

\sqrt{100} + [18 ÷ 3 x 4 - 15] - (60 - 7^2 - 1)

\sqrt{100} + [24 - 15]  - (60 - 49 - 1)

\sqrt{100} + 9 - 10

10 + 9 - 10

<u>Answer = 9</u>

Second Question:

5x + 2x = 7x

5x^2 + 3x^2 = 8x^2

2x + 3x - x = 4x

2x + 3y + x + y = 3x + 4y

9x - 6x = 3x

-7y + 3x + 4x + 3y = 7x - 4y

-7x^2 + 2x^2 + 9x^2 = 8x^2

(3x^2 + 5x + 4) - (-1 + x^2) = 2x^2 + 5x + 5

(3 + 2x - x^2) + (x^2 + 8x + 5) = 10x + 8

(3x - 4) - (5x + 2) = -2x - 6

(2x^2 + 5x + 3) - (x^2 - 2x + 3) = x^2 + 7x

(3x^2 + 2x - 5) - (2x^2 - x - 4) = x^2 + 3x - 1

Third Question:

17x + 2y

(5x + 12y) + (3x + y) = 8x + 13y

17x - 8x = 9x

2y - 13y = -11y

Answer: 9x - 11y

7 0
3 years ago
A 12-issue magazine subscription costs $36. What is the average cost per issue of the magazine?
Natasha2012 [34]
$3 
its like a pack of 12 magazines costing $36 and you asked the cost of one magazine
by proportion; let average be=?
12~$36
1~?
1/12=?/36
?=(1/12)*36
?=3=average
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3 years ago
. Cara is playing a game. For each dart she can toss onto a board, she
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She will need 12 seconds because -20•12=-240
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7. point A(-2, 7); parallel to the line y = - 3x - 4
aniked [119]

Answer:

y=-3x+1

Step-by-step explanation:

plug in point into x and y, replace -4 as a +b(or any other variable to represent y intercept)

therefore,

7=-3(-2)+b

7=6+b

1=b

y=-3x+1

8 0
3 years ago
You decide to create a business selling handmade
DerKrebs [107]

Answer:

$16.40

Step-by-step explanation:

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