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kow [346]
3 years ago
9

The average age of 15 students is 16 years. If teacher’s age is included the average increases

Mathematics
1 answer:
weqwewe [10]3 years ago
5 0

31

because 15 +16 :31

. = y1 =  \times

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5x(2x-y) -3y(2+3x) expand and simplify​
OleMash [197]

Answer:

10x² - 14xy -6y

Step-by-step explanation:

5x(2x-y)-3y(2+3x)

10x²-5xy-6y-9xy

10x² - 14xy - 6y

5 0
3 years ago
Give right answers for good review
Rainbow [258]

Answer:

45 im not sure doe

Step-by-step explanation:

6 0
3 years ago
out of 125 children at summer camp 45 signed up for swimming 38 for arts and crafts if a child is randomly selected what is the
anzhelika [568]
P(s) = 45/125 = 0.360
P(A&C) = 38/125 = 0.304
Probability that one is not in Arts and Crafts = 1- P(A&C) = 1-0.304 = 0.696

Therefore,
Probability that the child selected is in swimming when its known they didn't sign for Arts and craft = Probability they signed for swimming * Probability that they didn't sign for Arts and Crafts = 0.360*0.696 = 0.25056
3 0
3 years ago
Read 2 more answers
M is the midpoint of AB. If A is at (5,7) and M is at (-3,-4), find the coordinates of B.
Paladinen [302]

Got a picture for this question?


6 0
3 years ago
10 + 2n = 8n - 2n + 10
galina1969 [7]

Answer:

n=0

Step-by-step explanation:

Rearrange

10+2=8−2+10

2+10=8−2+10

Combine like terms

2n+10=<u>8n−2n</u>+10

2+10=<u>6</u>+10

Subtract from both sides

2+10=6+10

2+10<u>−10=</u>6+10<u>−10</u>

Simplify

2n=6n

Subtract both sides from 6n of the equation

2=6

2<u>−6</u>=6<u>−6</u>

Solution

n=0

5 0
3 years ago
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