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lapo4ka [179]
3 years ago
15

I need help with this bc i dont understand it can somebody help me plzzzzz i'll give you 40 points for it!!!! And name you brain

ly!!!!!!!

Mathematics
1 answer:
kkurt [141]3 years ago
6 0

Answer:

8.79 in

Step-by-step explanation:

23 = 150/360 × 2×3.14× r

23 = 5/12 × 6.28 x r

23 = 31.4×r / 12

31.4 r = 23×12

31.4 r = 276

r = 276/31.4

r = 8.79 in

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Find the volume of the cone.
zhenek [66]

The volume of the cone of  radius 5 units and height 3 units is 78 cubic units.

Given radius of cone 5 units and height of cone be 3 units.

We are required to find the volume of cone.

Volume is the amount of substance that a container can hold in its capacity.

Formula of cone is 1/3 *πr^{2} h in which  r is radius and h is height of cone.

We have to just put the values in formula.

Volume=1/3 *π5^{2} 3

=25*3π/3

=75π/3

=25π

Put π=3.14 as said in the question.

=25*3.14

=78.5 cubic units.

After rounding we will get 78.

Hence the volume of cone whose radius is 5 units and height is 3 units is to be 78 cubic units.

Learn more about volume at brainly.com/question/463363

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Question is incomplete as it should include the figure.

5 0
2 years ago
Some of Mrs. Turay’s eighth graders took the PSAT test. Score totals of ten of her students are below. Calculate the mean and th
den301095 [7]

Answer:

(a) Mean=74

(b) Median=70

(c) The best measure of center= Median.

Step-by-step explanation:

We have been given a data set of PSAT scores of Mrs. Turay's eight graders. We are asked to find mean and median of the given data set.

(a) Let us find mean of data set by dividing the sum of given scores by the number of students.

\text{Mean}=\frac{60+62+67+69+70+70+71+75+76+120}{10}

\text{Mean}=\frac{740}{10}=74

Therefore, the mean test score will be 74.

(b) Now let us find median of our given data set. We have been given that number of students is 10, therefore, our median will be the average of 5th and 6th term.

60, 62, 67, 69, 70, 70, 71, 75, 76, 120.

We can see that 5th term is 70 and 6th term is 70 as well.

\text{Median}=\frac{70+70}{2}

\text{Median}=\frac{140}{2}

\text{Median}=70

Therefore, the median test scores will be 70.

(c) We can see that our data set has an outlier score as 120, which has increased the mean. Mean score is greater than median score. Since median is not affected by extreme value outliers, therefore, median will be the best measure of center for given test scores.    


3 0
4 years ago
Read 2 more answers
5.
nika2105 [10]
You have to use a calculator for both of the exact values using sin^-1 or Cos^-1 you can then times those together, with the final part the answer is sin 240 as sin(A-B) = sinAcosB-CosASinB
6 0
3 years ago
Write an equation of a line that is parallel to y=-3x+4 and passes through (3,7)
lana [24]

Answer:

The equation of a line pass to y=-3x +4 and 3,7 is y-y1=m(x-x1)

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3 years ago
In the expression 5x + 3xy - 7yz +
julia-pushkina [17]

Answer: 2

Step-by-step explanation:

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4 years ago
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