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Delvig [45]
3 years ago
10

Find the height of a square pyramid that has a volume of 75 cubic feet and a base length of 5 feet.

Mathematics
1 answer:
Rudiy273 years ago
3 0

Answer:

9 ft

Step-by-step explanation:

Let's begin with the formula for the volume of a square pyramid.  If s is the base length, then the area of the base is s^2.  The volume of the pyramid is then V = (1/3)(base area)(height).  We know the volume and the base length (s), and want to find the height.  Solving V = (1/3)(base area)(height)

for height, we get:

3V = (base area)(height), or

    3V

---------------- = height

base area

Substituting 75 ft^3 for V and (5 ft)^2 for base area, we get:

               3(75 ft^3)              9 ft

height = ------------------ = ----------------- = 9 ft

                 25 ft^2                   1

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Thank u so much if u can get me the answers and the work for them. :)
Licemer1 [7]
6. Answer: B
Length of 1 side is 6
Perimeter is 6×6 = 36
5 times larger
Length of one side 6×5 = 30
Perimeter is the 30×6 = 180
180/36 = 5 Perimeter is 5 times greater

7. Answer: H
Find the whole number of squares in the shape given - 22 squares
22 × 10ft = 220 feet

8. Answer: F
((12-3)×3) + (4×3) = (9×3) + 12
= 27 + 12
= 39 ft^2

9. Answer: C
6 0
3 years ago
Is this a right triangle?<br> 25 cm, 23 cm, and 14 cm.<br> O YES<br> O NO
madam [21]

Answer:

no

Step-by-step explanation:

6 0
3 years ago
he numbers of regular season wins for 10 football teams in a given season are given below. Determine the​ range, mean,​ variance
Naddik [55]

Answer:

Range = 13

Mean = 8.4

Variance= 21.24

Standard deviation= 4.61

Step-by-step explanation:

2​, 10​, 15​, 3​, 13​, 9​, 14​, 7​, 2​, 9

For the range

Let the set of data be arranged inn ascending order

Range= higehest value- lowest value

Range = 15-2

Range= 13

For the mean

Mean = (2+2+3+7+9+9+10+13+14+15)/10

Mean = 84/10

Mean = 8.4

For variance

Variance=((2-8.4)²+(2-8.4)²+(3-8.4)²+(7-8.4)²+(9-8.4)²+(9-8.4)²+(10-8.4)²+(13-8.4)²+(14-8.4)²+(15-8.4)²)/10

Variance= (40.96+40.96+29.16+1.96+0.36+0.36+2.56+21.16+31.36+43.56)/10

Variance= 212.4/10

Variance= 21.24

Standard deviation= √variance

Standard deviation= √21.24

Standard deviation= 4.609

Approximately = 4.61

6 0
3 years ago
15 is what percent of the 45
yawa3891 [41]
6.75 is the answer I hope this helps
5 0
3 years ago
Read 2 more answers
Can I have some help
jok3333 [9.3K]
18/20=27/x
18x=27*20
x=(27*20)/18=30

Answer: 30
6 0
3 years ago
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