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storchak [24]
3 years ago
15

Find the value of this expression if x = -1 and y = 9. x²y -7

Mathematics
1 answer:
Zarrin [17]3 years ago
5 0

Answer:

-9/7

Step-by-step explanation:

Simplify and remove like terms.

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40% of the children in a sports club play badminton. 25% of the children who play badminton also play squash. There are 11 child
Keith_Richards [23]

Answer:

There are 110 children total in the sports club

Step-by-step explanation:

To get this answer, its actually easier than it seems. You might need a calculator however.

First you start with the 11 children who play both badminton and squash, then, you divide that by 0.25 (25%) to get 44.

Next you take 44 and divide it by 0.4 (40%) to get 110.

And there you go! If you want to make sure you got it right simply start with 110 and multiply it by 0.4 then multiply the number/decimal you get by 0.25. You should get 11 to confirm your answer :)

6 0
3 years ago
Write an algebraic expression for the word phrase: six times a length w
viktelen [127]
6w is the 6 times a length w
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Evalute m-2n if m= -3 and n= -8
stich3 [128]
M = -3
n = 8
plug in your variables.
-3 - (2 x -8)
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= 13
8 0
3 years ago
A worm is at the bottom of a 10ft hole. He starts climbing out of the hole, climbing 3 feet in one hour. Then he takes a break f
Korolek [52]

Answer:

6:00pm is the answer

Step-by-step explanation:


7 0
3 years ago
Which system of linear equations could be used to determine the price of each book
GuDViN [60]

Answer:

Let the price of the maths book be m and price of the novel book be n

Given that,

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we get,

The system of equation as,

\begin{gathered} m+n=54 \\ m=8+3n \end{gathered}

Hence the system of equation to determine the price of the maths and novel book is,

\begin{gathered} m+n=54 \\ m=8+3n \end{gathered}

4 0
1 year ago
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