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QveST [7]
2 years ago
9

Javier read a report that said the probability that a randomly selected American is left-handed is 14 % 14%14, percent. He was c

urious how many left-handed students to expect in a class of 30 3030 students. He simulated 100 100100 classes of 30 3030 students where each student selected had a 0.14 0.140, point, 14 probability of being left-handed. Javier counted how many left-handed students were in each simulated class. Here are his results: 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9# of left-handed students Use his results to estimate the probability that there are 7 77 or more left-handed students in a class of 30 3030 students. Give your answer as either a fraction or a decimal. P ( 7 or more left-handed ) ≈ P(7 or more left-handed)≈P, left parenthesis, 7, start text, space, o, r, space, m, o, r, e, space, l, e, f, t, negative, h, a, n, d, e, d, end text, right parenthesis, approximately equals
Mathematics
1 answer:
OLga [1]2 years ago
5 0

Answer: have a lovely day bbys

Step-by-step explanation: i really don’t know what this is tbh

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Baby Amelia's parents measure her height every month.
jonny [76]

The statement H(30) = H(25) + 5 means that, "when Amelia was 30 months old, she was 5 centimeters taller than when she was 25 months old"

<h3><u>Solution:</u></h3>

Given that,

Baby Amelia's parents measure her height every month

It is given that H(t) models Amelia's height (in centimeters) when she was "t" months old

Given statement is H(30) = H(25) + 5

So, we can say that H(30) = Amelia's height when she was 30 months old

H(25) = Amelia's height when she was 25 months old

So H(30) = H(25) + 5 means that,

Height of Amelia when she was 30 months old is 5 centimeter more than Amelia height when she was 25 years old

Or we can say that,

When Amelia was 30 months old, she was 5 centimeters taller than when she was 25 months old

7 0
2 years ago
Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side. The area of the smalle
siniylev [52]

Answer:

20 by 20

Step-by-step explanation:

the new dimensions have to be 12 because 12×12 =144 so you would add 8 to 12 and get 20 for each side

7 0
2 years ago
Read 2 more answers
7.5 x 18.74 show your work
FinnZ [79.3K]
7.5x18.74= 140.55 is the correct answer
7 0
2 years ago
PLZZ IN NEED HELP!
boyakko [2]

Answer:

18\pi\ cm^2

Step-by-step explanation:

step 1

Find the area of complete circle

The area of the circle is given by the formula

A=\pi r^{2}

we have

r=9\ cm

substitute

A=\pi (9)^{2}

A=81\pi\ cm^2

step 2

Find the area of the shaded region

we know that

The area of complete circle subtends a central angle of 360 degrees

so

using proportion

Find out the area of the shaded region if the central angle is equal to 80 degrees

\frac{81\pi}{360^o}=\frac{x}{80^o}\\\\x=81\pi(80)/360\\\\x= 18\pi\ cm^2

6 0
2 years ago
7. If W = 3Z, and Z is 30% of R, then W is what
dem82 [27]

Answer:

90%

Step-by-step explanation:

Let R = 100

Since, Z = 30% of R

Therefore, Z = 30% *100 = 30

Since, W = 3Z

Therefore, W = 3*30 = 90

Percentage of W of R

= \frac{Value \: of \: W}{Value \: of \: R} \times 100\\\\=\frac{90}{100} \times 100\\\\Percentage \:of \:W \:of \:R =90\%

7 0
2 years ago
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