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Charra [1.4K]
3 years ago
7

A student determined that the area of the segment of shown above is Asegment = 137.71 ft2. The student's work is shown below. Ev

aluate the student’s answer. Asector = 75.36 ft2 Atriangle = 62.35 ft2 Asegment = Asector + Atriangle Asegment = 137.71 ft2 A. The student’s answer is correct. B. The student did not calculate the area of the sector correctly. C. The student did not calculate the area of the triangle correctly. D. The student did not use the correct formula to calculate the area of the segment.
Mathematics
1 answer:
tankabanditka [31]3 years ago
6 0

Answer:

D. The student did not use the correct formula to calculate the area of the segment.

Step-by-step explanation:

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Factorise -75ab² - 15ac
Verdich [7]

Answer:

1)  -15·a·(5·b² + c)

2) h < 4

3) 4·x² - 9

4) 1792

5)  156°

6) 2t cm

7) 2·a·m·(2·m - 3)

8)  10 cm

9) 0.00051

10)  #47,250

11)  -10·p·q

12) 1.35 × 10⁻⁴

13) 320°

14) 20 cm

15) 12·x²·y²

16) 6.36 × 10⁵

17) 4 cm

18)  225°

19) 1034 cm²

20) 29

Step-by-step explanation:

1) The given expression is -75·a·b - 15·a·c

Which can be expressed as -15·a·(5·b² + c)

2) The height, h < 2 × 12/6 = 4

h < 4

3) (2·x - 3)·(2·x + 3) = 4·x² - 9

4) The selling price = 1.12 × 200 × 8 = 1792

5) The interior angle of a polygon is given by the relation;

(n - 2)×180/n for 15, we get;

(15 - 2)×180/15 = 156°

6) 2t cm

7) 4·a·m² - 6·a·m = 2·a·m·(2·m - 3)

8) Slant height = √(8² + 6²) = 10 cm

9) 51 × 10⁻⁵ = 0.00051

10) Cash price = #54,000 × (1 - 0.125) = #47,250

11) -40·p·q÷(-2)² = -10·p·q

12) 0.003 × 0.045 = 1.35 × 10⁻⁴

13) N40°W = 320°

14) The base diameter of the cylinder = √(4 × (700×π cm³/7)/π) = 20 cm

15) The LCM of 2·x²·y, 3·x·y² is 12·x²·y²

16) 636,000 = 6.36 × 10⁵

17) 1/3·π·r²·h₁ = π·r²·h₂

h₂/h₁ = 1/3·π·r²/( π·r²) = 1/3

h₂/12 =  1/3

h₂ = 12/3 = 4 cm, the height of the cylinder = 4 cm

18) The angle = 180 + 45 = 225°

19) The total surface area = 22/7×14²/4 +  22/7 ×14 × 20 = 1034 cm²

20) The number is 58/2 = 29.

4 0
3 years ago
100 points<br> whats 9 times 3 plus 3 divided by 2
Dmitrij [34]

Answer:

hi

Step-by-step explanation:

28.5

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3 years ago
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Erin found 9 cents<br> each day for 7 days.<br> How much money did<br> she find in all?
kherson [118]
After 7 days she would have eventually found 63 cents.
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Hurryyyy plzzz answer
Neporo4naja [7]

Answer:

the answer is 14 ounces of sugar

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Michael has $1,059.35 in his checking account. He is going to spend $466.43 on a new television, and he will spend the rest on s
sesenic [268]

Answer:

D. $43.00x + $466.43 < $1,059.35

Step-by-step explanation:

He has $1,059.35.

The amount of speakers he buys is x.

Each speaker is $43.00, and he is buying one television, which is $466.43.

All of the speakers he buys and(+) the television must be less than $1,059.35 because that's all he has. It cannot be more, which is why the equation is $43.00x + $466.43 < $1,059.35.

Hope this helps!

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2 years ago
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