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Naddika [18.5K]
3 years ago
5

Hi :), im really struggling with this. Just wanted to know if anyone can explain step by step for me please?

Mathematics
1 answer:
likoan [24]3 years ago
3 0

Answer:

314 m²

Step-by-step explanation:

the surface area of a sphere (As) = 4×pi×r²

our radius r (half the diameter) here is 5m.

=>

As = 4×pi×5² = 4×3.14×25 = 100×3.14 = 314 m²

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Hugo recurved $100 for his birthday.He then saves 20$ per week until he had a total of $460 to buy a printer. Use a. Equation to
SashulF [63]

Answer:

18 weeks

Step-by-step explanation:

In this question, we are asked to use an equation to show the number of weeks it took Hugo who received a certain amount in his birthday and continually saved a certain amount before he could gather a certain amount of money.

In this question, we understand that Hugo wants to buy a printer that costs $460. Fortunately, he had his birthday and he received $100 bucks. Now, let’s say the number of weeks he had to save for is w and he saves 20 per week. This means the total amount he hit from his savings would be 20w

Mathematically, we can use the equation below to model this scenario;

100 + 20(w) = 460

20w = 460 - 100

20w = 360

w = 360/20

w = 18 weeks

3 0
3 years ago
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garik1379 [7]
I’m just going off of what I was told in fifth grade, and we were told it was finger nails. Hope this helps!
5 0
4 years ago
PLEASE HELP !!!!!!!!!
Andrej [43]

Answer: bottom one I think

Step-by-step explanation:

6 0
3 years ago
9a^4+3a^2+21 please answer
SSSSS [86.1K]
What are you trying to find?
4 0
3 years ago
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Find the average speed of car if it travels 18km in 20 minutes.​
Lena [83]

Answer:

\boxed{\sf Average \ Speed = 54\ km/hr}

Step-by-step explanation:

<u><em>Given: </em></u>

Distance = S = 18 km

Time = t = 20 min = 20/60 = 0.33 hours

<u><em>Required:</em></u>

Average Speed = <v> = ?

<em><u>Formula:</u></em>

Average Speed = Total Distance Covered / Total Time Taken

<u><em>Solution:</em></u>

A . S = 18 / 0.33

A.S = 54 km/hr

3 0
3 years ago
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