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3 years ago

PLEASE HELP. WILL GIVE BRAINLIEST FOR CORRECT ANSWER

Mathematics

1 answer:

lozanna [386]3 years ago

6 0

Are of shaded region = area of circle - area of segment
$= \pi {r}^{2} - ((\alpha \div 360) \times \pi \times {r}^{2} )$
$= \pi {r}^{2} (1 - \alpha \div 360)$
$r = 8.35 \\ \alpha = 100$
$= 158.1666....$
$rounding \: up$
$area \: of \: shaded \: region \: = 158.2 \: \: square ft$

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Calculate the variance of the following set of data. 3, 33, 303, 233, 3, 73, 83, 63

andrew-mc [135]

Answer:

12083.929

Step-by-step explanation:

First step: find the mean of the data.

mean = 3+33+303+233+3+73+83+63

= 794

= 99.25

Second step: Now we calculate each dog's difference from the Mean.

Example : 3–99.25=96.25

Answer: (-96.25)+(-66.25)+203.75+133.75+(-96.25)+(-26.25)+(-16.25)+(36.25)

Third step: To calculate the Variance, take each difference, square it, and then average the result.

s² = (-96.25)²+(-66.25)²+203.75²+133.75²+(-96.25)²+(-26.25)²+(-16.25)²+(36.25)²

8–1

= 9264.063+4389.063+41514.063+17889.063+9264.063+689.063+264.063+1314.063

= 84587.5

= 12083.929

Variance Formula:

Variance = s² =Σ(xi− x )²

n−1

4 0

3 years ago

Read 2 more answers

Can someone help me with 26 it’s really confusing

BARSIC [14]

Answer:

$2 \times (8 < m \div 2) \\ m > 16$

5 0

3 years ago

~~~30 POINTS~~~ Please assist me on this math question!

MAXImum [283]

A)
Let's pick point (4,4) and point (2,2). If you divide the new point by the old point you will see that both the x-value and the y-value were multiplied by 2 to gt the new x-value and new y- value. So the scale factor is 2.

The perimeter of the first square can be found by subtracting the x-values from two points to get the length of one side and then multiply the result by 4 to get the perimeter of the whole square.
2-(-2)=4
The length of one side of the first square is 4. (I just subtracted the x-values.)
4 times 4 = 16.
The perimeter of the first square is 16.

Similarly, 4-(-4)=8 and 8 times 4 = 32.
The perimeter of the second square is 32.

b)
Let's pick point (6,6) and point (3,3). If you divide the new point by the old point you will see that both the x-value and the y-value were multiplied by 2 to gt the new x-value and new y- value. So the scale factor is 2.

The perimeter of the first square can be found by subtracting the x-values from two points to get the length of one side and then multiply the result by 4 to get the perimeter of the whole square.
3-(-3)=6
6 times 4 = 24.
The perimeter of the first square is 24.

Similarly, 6-(-6)=12 and 12 times 4 =48.
The perimeter of the second square is 48.

c)
If a figure is dilated to a scale factor of 2 then the perimeter of the figure will also be doubled.

3 0

3 years ago

Can someone also help me on finding four points on the following circle located below? Please help me right now!!! :(

Nataly_w [17]

Answer:

<h2>hope it helps you see the attachment for further information..... </h2>

4 0

3 years ago

Plzzzzzz help (28 + 7 + 6 + 3) X 1/2 explain

xeze [42]

28/7 + 6/3 first divide 28/7
4 + 6/3 the divide 6/3
4 + 3 and then add them up which is 7
7 divide 1/2
Which is 14
HAVE A GREAT DAY:) !

7 0

3 years ago