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Alex17521 [72]
3 years ago
6

What did I do wrong when finding out the sector area? I know the answer I got is wrong so can someone please help me

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
7 0

A circular sector is the area between two radii of a circle and the arc between them.

The area is indeed given by

pi*r^2*(arc angle/360)

=pi*10.5^2(118/360)

=36.1375 pi cm^2

=113.529... cm^2

Therefore your answer is correct, to the first decimal place.

Perhaps you can check if the question specifies a different accuracy for the answer, or a different value of pi to be used.

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What is the slope of the line through the points (6,-8)And (3,- 4)​
Nina [5.8K]

Answer:

y=(-4/3)x

Step-by-step explanation:

you put the points into this equation to find the slope

(y2-y1)/(x2-x1)

now lets label the points

(6,-8)

x1=6 and y1=-8

(3,-4)

x2=3 and y2=-4

Input into equation

(-4-(-8))/(3-6)=

(-4+8)/(3-6)

4/-3

7 0
3 years ago
What additional doubles fact can help you find 4+3? Explain how you know
Anna35 [415]

Answer:

Either 4+4=8 then take 1 away to get 7 or 3+3=6 then add 1 to get 7.

Step-by-step explanation:

5 0
2 years ago
29 If the zeros of a quadratic function, F, are -3 and 5, what is the equation of the axis of symmetry
UNO [17]

Answer:

the axis of symmetry is X = 1

Step-by-step explanation:

make sure to ask if you need any further guidance.

8 0
1 year ago
I need help this question?
Olegator [25]

Answer: the first option is the correct answer.

Step-by-step explanation:

Let x represent the number of necklaces that he makes in a year.

Profit = Revenue - cost

The cost of making each necklace is $5. In making necklaces in a year, the fixed cost is $5000. This means that the total cost of making x necklaces in a year is

5x + 5000

Sam sells each necklace for $10 each. This means that the total amount made from selling x necklaces is $10x.

For Sam to make profit of $1000 in a year, the number of necklaces that she must sell would be

1000 = 10x - (5x + 5000)

1000 = 10x - 5x - 5000

10x - 5x = 1000 + 5000

5x = 6000

x = 6000/5

x = 1200

7 0
3 years ago
According to a study by de Anna students, the height for Asian adult males is normally distributed with an average of 66 inches
Maslowich
A. X ~ N(66, 6.25)

b.z_{1} =\frac{65-66}{2.5}=-0.4
z_{2} =\frac{69-66}{2.5}=1.2
Using a standard normal probability table to find probability values for the z-scores, we get:
P(65 < X < 69) = 0.1554 + 0.3849 = 0.5403

c. z= 0.524 and -0.524
0.524=\frac{X-66}{2.5}
1.31 = X - 66
X = 67.31
When z = -0.524, X = 64.69.
P(64.69 < X < 67.31) = 0.4

4 0
3 years ago
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