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maria [59]
3 years ago
10

Total surface area of a solid hemisphere isa.) 3 Ir²b.) 2 Ir2c.)4Ir2 d.)2/3 Ir3​

Mathematics
1 answer:
Delicious77 [7]3 years ago
8 0

Answer:

c

Step-by-step explanation:

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The Gotemba walking trail up Mount Fuji is about 9km long. Walkers need to return from the 18km walk by 8pm. Toshi estimates tha
stiv31 [10]

Answer:

Toshi must begin his walk at 11:00 AM in order that he can return by 8:00 PM.

Step-by-step explanation:

Since the Gotemba walking trail up Mount Fuji is about 9km long, and walkers need to return from the 18km walk by 8pm, if Toshi estimates that he can walk up the mountain at 1.5km / h on average, and down at twice that speed , these speeds taking into account meal breaks and rest times, to determine what is the latest time he can begin his walk so that he can return by 8pm the following calculation must be performed:

Climb: 1.5 km / h

Descent: 2 x 1.5 km / h = 3 km / h

Climb: 9 km / 1.5 km / h = 6 hours

Descent: 9km / 3 km / h = 3 hours

Total: 9 hours

8 PM = 20:00

20:00 - 09:00 = 11:00

Thus, Toshi must begin his walk at 11:00 AM in order that he can return by 8:00 PM.

3 0
3 years ago
PLEASE HELP!! If f (x) = 4x^-2 + 1/4x^2 + 4, then f’(2) =
Elena-2011 [213]
<h3>Answer: D) 0</h3>

Work Shown:

f(x) = 4x^(-2) + (1/4)x^2 + 4

f ' (x) = 4*(-2)x^(-3) + (1/4)*2x .... power rule

f ' (x) = -8x^(-3) + (1/2)x

f ' (2) = -8(2)^(-3) + (1/2)*(2)

f ' (2) = 0

4 0
3 years ago
Suppose the circumference of a circle is 2pi what is its area?
soldi70 [24.7K]
Circumference=2πr
2π=2πr
r=1

area=πr^2
area=π(1)^2
area=π
5 0
3 years ago
I’ll give you brainiest if you answer correctly! I need help
Maurinko [17]

Answer:

y= -3/11x + 13

Step-by-step explanation:

hope this helps ( my cousins helped me) :))

7 0
3 years ago
What is 1+1+1+1+47+90​
liraira [26]

Answer:

141

Step-by-step explanation:

141

4 0
2 years ago
Read 2 more answers
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