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Vinil7 [7]
3 years ago
6

Math Prodigy- I know the answer, just trying to get an even number of points.

Mathematics
2 answers:
horrorfan [7]3 years ago
5 0
There are seven groups of stars and 49 stars in total. 49/7=7 7 stars per group is the answer
Vitek1552 [10]3 years ago
5 0

Answer:

7x7=49

Step-by-step explanation:

there is 7 groups of 7, so you multiply it to get 49

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A die is rolled 23 times and the number of twos that come up is tallied. If this experiment is repeated many times, find the sta
Anon25 [30]

The probability of rolling a 2 is 1/6. If X is a random variable representing the number of 2s that are obtained after rolling a die 23 times, then X follows a binomial distribution with success probability p = 1/6 across n = 23 trials.

The variance of a binomial distribution with parameters p and n is n p (1 - p), so the standard deviation in this case would be

√(23 • 1/6 • 5/6) ≈ 1.8

7 0
2 years ago
Help with number 10 pls it seems really easy!!
Alla [95]

OK so if they ring at 6AM together then they would ring like this from now on:

ANSWER: they ring together next at 9:20

Bell 1: 6:25       Bell 2: 6:40

Bell 1: 6:50       Bell 2: 7:20

Bell 1: 7:15       Bell 2: 8:00

Bell 1: 7:40       Bell 2: 8:40

Bell 1: 8:05       Bell 2: 9:20

Bell 1: 8:30       Bell 2: 10:00

Bell 1: 8:55       Bell 2: 10:40

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4 0
3 years ago
Suzanne has a rectangular garden which is 18 feet long and 11 feet wide. She has 168 square foot of paving stones, and she wants
VikaD [51]

Answer:

width = 2.5 feet

Step-by-step explanation:

Suzanne has a rectangular garden which is 18 feet long and 11 feet wide.

Area of the garden = length times width = 18 times 11= 198 square foot

Let 'w' be the width of the border

Length of the garden with border = 18+2w

Width of the garden with border = 11+2w

Area of the garden with border = (18+2w)(11+2w)=4w^2+58w+198

Area of the border = 4w^2+58w+198-198=4w^2+58w

She has 168 square foot of paving stones,

4w^2+58w=168

Solve for w

apply quadratic formula

a= 4, b= 58 and c=-168

\quad x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

w=\frac{-58+-\sqrt{58^2-4\cdot \:4\left(-168\right)}}{2\cdot \:4}

w=\frac{-58+-\sqrt{6052}}{8}

we get two values for w

w=\frac{-58+\sqrt{6052}}{8}=2.47

w=\frac{-58-\sqrt{6052}}{8}=-16.97

5 0
3 years ago
43/21 as a decimal rounded to the nearest hundredth
vovikov84 [41]
2.05 :D Have a good day!
4 0
3 years ago
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The Japanese Shinkansen, or bullet train, can accelerate rapidly to reach its maximum traveling speed of about 170 miles per hou
zubka84 [21]

Answer:

jjj

Step-by-step explanation:

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3 years ago
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