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3 years ago

Can someone help with numbers 15 and 16

Mathematics

1 answer:

vichka [17]3 years ago

4 0

15.

I had x before the movie.

x - 13.50 = 26.50

Add 13.50 to both sides of the equation:

x = 40

I had $40 before the movie.

16.

The original balance was x.

x - 161.15 = 423.28

Add 161.15 to both sides:

x = 584.43

The previous balance was $584.43

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X-14

DENIUS [597]

Step-by-step explanation:

it will be 14 times 2 which will be 28 length and 74 plus 74 which will be 148 for the both side wide.

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3 years ago

Which angles are supplementary to AFE. Select all that apply.

marysya [2.9K]

Answer:

B and C

Step-by-step explanation:

They are on the same line so they ad up to 180 and are supplementary

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2 years ago

Plz help with this one toooo

Yuki888 [10]

Answer:y.5

Step-by-step explanation:5 times 3 = 15/2 = 7.5

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3 years ago

The probability that a student at certain high school likes art is 36%. The probability that a student who likes art also likes

KIM [24]

Answer: Probability that a student chosen at random likes science given that he or she likes art is 58%

Step-by-step explanation:

Since we have given that

Probability that a student who likes art and science = 21%

Probability that a student who likes art = 36%

According to question,

we need to find the probability that a student chosen at random likes science given that he or she likes art.

So, we will use "Conditional Probability":

P(A) = 0.36

P(S ∩ A) = 0.21

$P(S\mid A)=\frac{P(S\cap A)}{P(A)}\\\\P(S\mid A)=\frac{0.21}{0.36}\\\\P(S\mid A)=0.58\\\\P(S\mid A)=58\%$

Hence, Probability that a student chosen at random likes science given that he or she likes art is 58%.

5 0

3 years ago

Which of the following is a valid exclusion for the algebraic fraction:

erastova [34]

We have the following expression:
(27a ^ 3-1) / (9a ^ 2-6a + 1)
Rewriting we have:
(27a ^ 3-1) / (9a ^ 2-6a + 1)
(27a ^ 3-1) / ((3a-1) * (3a-1))
We exclude the values that make the denominator zero:
3a-1 = 0
a = 1/3
Answer:
a valid exclusion for the algebraic fraction is:
c. a ≠ 1/3

4 0

3 years ago