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aniked [119]
4 years ago
13

The sixth-grade classes have 28, 20,30, and 25 students. what is the mean number of students in a class?

Mathematics
1 answer:
Lelu [443]4 years ago
8 0
The mean is the average of all of the numbers. To find the average, you add up all of the numbers and divide that number by however many numbers you added.

For the data set: 28, 20, 30, and 25

You add 28 + 20 + 30 + 25, Which equals 103.

Now, you divide 103 by 4 to get the answer:
A. 25.75
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Acone has a height of 7 ft and a radius of 4 ft. Which equation can find the volume of the cone?
Marina86 [1]

Answer:

Volume of the cone = 117.06\,feet^3

Step-by-step explanation:

Height of the cone = 7\,feet

Radius of the cone = 4\,feet

Volume of a cone is:

              \pi \times r^2\times \dfrac{h}{3}

As, \pi =\dfrac{22}{7} =3.14

Volume is:      

                 =3.14\times(4\times 4)\times \dfrac{7}{3}\\\\ =3.14\times 16 \times 2.33\\\\=3.14\times 37.28\\\\=117.06\,feet^3

The volume of the cone is: 117.06\,feet^3

3 0
3 years ago
Use the given conditions to write an equation in slope-intercept form. slope = 7, passing through (1,-3) My suggestion is to fir
sveticcg [70]

Answer:

Step-by-step explanation:

y + 3 = 7(x - 1)

y + 3 = 7x - 7

y = 7x - 10

5 0
4 years ago
Solve for X<br><br> -3 (2x + 6) = 12<br><br> pls help <br> im ready to got bed<br> lol
kramer

Answer:

x=-5 Hope this helped! Goodnight!

Step-by-step explanation:

Let's solve your equation step-by-step.

−3(2x+6)=12

Step 1: Simplify both sides of the equation.

−3(2x+6)=12

(−3)(2x)+(−3)(6)=12(Distribute)

−6x+−18=12

−6x−18=12

Step 2: Add 18 to both sides.

−6x−18+18=12+18

−6x=30

Step 3: Divide both sides by -6.

−6x /−6 = 30 /−6

x=-5

6 0
4 years ago
Read 2 more answers
What is the perimeter of this pentagon? A. ft B. ft C. ft D. ft
Whitepunk [10]
1/6 +1/6 = 2/6 = 1/3

1/3 + 1/3 + 1/3 + 2/3 = 5/3 = 1 2/3 feet
7 0
3 years ago
Please help guys I need it
Inessa05 [86]

Answer:

a= 20

b= 169.7

c= 29.71

Step-by-step explanation:

The formula of a triangle is (h*b)/2

a= (5*8)/2

b= to find the height, you can use the pythagorean theorem 18^2 - 6^2 = square root of 288. Which is 12root 2 or 16.97. (16.97*20)/2

c= using the pythagorean theorem- 11^2 = 7^2 - c^2 = square root 73, or 6root 2, or 8.49. (8.49* 7)/2

4 0
3 years ago
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