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Cerrena [4.2K]
3 years ago
13

Find the missing length indicated.

Mathematics
1 answer:
Andrews [41]3 years ago
8 0

Answer:

<h3>x=144</h3>

Step-by-step explanation:

h²=65²-25²=4225-625=3600

h²=x*25

x=h²:25

x=3600:25

<h3>x=144</h3>
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Judd is 3 years older than Jordan. Jordan is 6 years younger than Chris. Write an algebraic expression for the sum of their ages
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Answer:

تيتلتبنبزلمينبووبصحثنل

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2 years ago
1. Holly missed 8 of 182 school days this year Approximately school days was Holly in attendance? what percent of
xxTIMURxx [149]
Days attended = 174
% attendance = 174/182 * 100 = 95.60%

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3 years ago
Please brainliest and 50 points a blueprint of a room drawn in a coordinate plane, using an appropriate scale
Inga [223]

Answer:

x= 45

Step-by-step explanation:

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3 years ago
Assume that when adults with smartphones are randomly​ selected, 63​% use them in meetings or classes. If 7 adult smartphone
nlexa [21]

Answer:

5.78% probability that exactly 2 of them use their smartphones in meetings or classes.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they use their smarthphone in meetings or classes, or they do not. The probability of an adult using their smartphone on meetings or classes is independent of other adults. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

63% use them in meetings or classes.

This means that p = 0.63

7 adult smartphone users are randomly selected

This means that n = 7

Find the probability that exactly 2 of them use their smartphones in meetings or classes.

This is P(X = 2).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{7,2}.(0.63)^{2}.(0.37)^{5} = 0.0578

5.78% probability that exactly 2 of them use their smartphones in meetings or classes.

8 0
2 years ago
There are 175 glasses ellen need to wash she washes 68% of the glasses . How many glasses does Ellen have left to wash
blagie [28]

Answer:

175-119= 56

Step-by-step explanation:

because 68%of 175 = 119

so she has washed 119 and 56 are left

8 0
2 years ago
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