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nordsb [41]
3 years ago
13

Pls help i give u brainliest and 5 stars ​

Mathematics
2 answers:
Harrizon [31]3 years ago
7 0

Answer:

1932.4816

Step-by-step explanation:

The formula for SA of a cube is 4πr² so half is 2πr² and sing the radius is 7 the answer is 1932.4816 cm²

Umnica [9.8K]3 years ago
3 0

Answer:

Step-by-step explanation:

Diameter = 14 cm

r = 14/2 = 7 cm

Outer surface area of hemisphere =2πr²

      = 2π*7*7

      = 98π cm²

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Which equation has a graph that includes the point (4.5, 14)?
Gennadij [26K]

Answer:

y = 2x + 5 and y = 4x – 4

Step-by-step explanation:

14 = 2(4.5) + 5

14 = 9 + 5   14 = 14 is correct

and 14 = 4(4.5) - 4

14 = 18 - 4   14 = 14 is correct

8 0
3 years ago
show that, except for 2 and 5, every prime number can be expressed as 10k+1, 10k+3 10k+7, 10k+9, where k is an interger
ycow [4]
10(6)+1=61
10(15)+3=<span>153
10(4)+7=</span><span>47
1</span>0(9)+9=<span>99

this is true because when you multiply a number by 10 it will be an even number(2,4,6,8,etc...)...then when you add an odd number to that the number will turn odd(153,47,99,etc..)... and when you multiple integers they will always multiply to an even number </span>
8 0
3 years ago
Darius and Barb are playing a video game in which the higher score wins the game. Their scores are shown below.
olchik [2.2K]

Answer:

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8 0
3 years ago
Read 2 more answers
Help !
aivan3 [116]

Answer:

a. p(orange) = 5/14

b. p(green) = 3/14

c. p(red) = 1/7  

d. p(brown) = 2/7  

e. p(brown or red) = 3/7

Step-by-step explanation:

1. You have a 14 pencils. Two pencils are red, 5 pencils are orange, 3 pencils are green and 4 pencils are brown.

p(color) = (number of pencils of that color)/(total number of pencils)

p(color) = (number of pencils of that color)/14

a. If a pencil is picked at random, what is the probability that the pencil

will be orange?

p(orange) = 5/14

b. If a pencil is picked at random, what is the probability that the pencil

will be green?

p(green) = 3/14

c. If a pencil is picked at random, what is the probability that the pencil will be red?

p(red) = 2/14 = 1/7

d. If a pencil is picked at random, what is the probability that the pencil

will be brown?

p(brown) = 4/14 = 2/7

e. If a pencil is picked at random, what is the probability that the pencil

will be brown or red?

brown: 4

red: 2

brown or red: 4 + 2

p(brown or red) = 6/14 = 3/7

3 0
3 years ago
1/5 fraction on a number line. find difference and expression
baherus [9]
I don’t get what you are asking ? make a number like and draw the fraction 1/5
7 0
3 years ago
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