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ANTONII [103]
3 years ago
8

Find the total surface area of a sphere radius being 7cm

Mathematics
1 answer:
Lilit [14]3 years ago
6 0

Answer:

A≈615.75m²

Step-by-step explanation:

Solution

A=4πr2=4·π·72≈615.75216m²

Hope this helped!!!

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1. In a basket, there are white and red balls. What is the smallest number of balls you need to take out of the basket so that t
hjlf

Answer:

  1. 3
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  3. 7

Step-by-step explanation:

1. In 2 draws, you can get one of each, so a minimum of 3 draws will guarantee at least 2 of one color.

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2. A minimum of 3 socks must be drawn to ensure one pair. A minimum of 2 must be drawn to ensure an additional pair. For three pairs, 7 socks must be drawn.

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3. The first 5 balls drawn could be white, so an additional 2 must be drawn to ensure 2 red balls. To be sure of 2 red balls, 7 balls must be drawn.

6 0
3 years ago
PLEASE ANSWER! I DONT UNDERSTAND
vfiekz [6]

Step-by-step explanation:

I think the answer is:

A. y=-3+2x

D. y=5x-4

Hope it helps

6 0
3 years ago
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Cerrena [4.2K]
1) R
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Sorry I could on see these ones. The fractions were a bit hard to see but I hope this helped a bit.
6 0
3 years ago
Find the x- and y-intercepts of the line x - 3y= -9
forsale [732]

Answer:

D

Step-by-step explanation:

To find the intercepts, that is where the line crosses the x and y axes

• Let x = 0, in the equation for y-intercept

• Let y = 0, in the equation for x- intercept

x = 0 : - 3y = - 9 ⇒ y = 3 ⇒ (0, 3) ← y- intercept

y = 0 : x = - 9 ⇒ (- 9, 0 )← x- intercept


3 0
3 years ago
Read 2 more answers
Tina loves to read. Before breakfast, she read 21/2 pages, at lunch she read 31⁄5 pages, and after dinner she read 11⁄3 pages. H
MrMuchimi

Answer: 7 1/30

Step-by-step explanation:

Tina loves to read. Before breakfast, she read 2 1/2 pages, at lunch she read 3 1/5 pages, and after dinner she read 1 1/3 pages. To find the total, we add all the pages together. This will be:

2 1/2 + 3 1/5 + 1 1/3

The LCM of 2, 5 and 3 is 30.

= 2 15/30 + 3 6/30 + 1 10/30

= 6 31/30

= 7 1/30.

5 0
2 years ago
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