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1 answer:

7 0

You are expected to know (-x)*(-x) = x^2 = (x)*(x) for any value of x.

With this in mind, you expect to be looking for squares in answer to your question. You will find them.

1) y² = 49 . . . . . . . 4th selection
2) y² = 16 . . . . . . . 3rd selection

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Help me please i don't understand it

matrenka [14]

You have to multiply on this one because example you go to the restaurant and eat so you pay but you have to put tips for the workers so its saying how much was total in all plus the tips

6 0

3 years ago

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How do you divide 11.25 by 1.24

gizmo_the_mogwai [7]

You move the decimal of 1.24 twice and also move the decimal of 11.25 twice because you have to do the same thing two both numbers.
Then now, youre dividing 1125 by 124 and that would equal 9.075

3 0

3 years ago

Whats 0.55% as a mixed number and a decimal?

xxTIMURxx [149]

Mixed number is a natural number plus a proper fraction
a mixed number, is normally more than 1

anyway
percent means parstt out of 100
0.55%=0.55/100=0.055/10=0.0055/1=0.0055

it is 55/10000 as a fraction or 0 and 55/10000 aas a mixed number
decimal it is 0.0055

7 0

3 years ago

Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gen

Aleksandr-060686 [28]

Let X be the number of boys in n selected births. Let p be the probability of getting baby boy on selected birth.

Here n=10. Also the male and female births are equally likely it means chance of baby boy or girl is 1/2

P(Boy) = P(girl) =0.5

p =0.5

From given information we have n =10 fixed number of trials, p is probability of success which is constant for each trial . And each trial is independent of each other.

So X follows Binomial distribution with n=10 and p=0.5

The probability function of Binomial distribution for k number of success, x=k is given as

P(X=k) = $(10Ck) 0.5^{k} (1-0.5)^{10-k}$

We have to find probability of getting 8 boys in n=10 births

P(X=8) = $(10C8) 0.5^{8} (1-0.5)^{10-8}$

= 45 * 0.0039 * 0.25

P(X = 8) = 0.0438

The probability of getting exactly 8 boys in selected 10 births is 0.044

8 0

3 years ago

What is m∠D?<br><br> m∠D = °

Alex Ar [27]

Answer:

angle d would be 63 degrees since angle B and A would form a same side interior angle, which adds to 180 so angle A has to be 117. angle D also forms a same side interior with angle A, so 180-117=63.

4 0

3 years ago

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