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Georgia [21]
3 years ago
9

Simplify (15+6)^2-(8-5)^2

Mathematics
1 answer:
Art [367]3 years ago
3 0
Use "PEMDAS" (Parentheses, Exponents, Multiplication, Division, Addition, Subtraction) to know what to do first.

(15 + 6)^{2} - (8 - 5)^{2}   Solve the insides of the parentheses
21^{2} - 3^{2}                   Solve the exponents (21 x 21) and (3 x 3)
441 - 9                             Subtract
432

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2/6 + 1/3 =<br><br> _ / _ + _ / _ = _ / _ = _ / _
Thepotemich [5.8K]

Answer:

1/3 = 2/6

2/6 + 2/6 = 4/6 = 2/3

2/3 or 4/6 is your answer. You should probably go with 2/3 b/c that is the most simplified!

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
A girl obtained 32.8 marks in nepali and failed by 7.2 marks. What was the pass marks of the subject?
adoni [48]

Answer:

40 marks was the pass marks of the subject.

Step-by-step explanation:

32.8 + 7.2 = 40 marks         { basic addition theory based }

8 0
2 years ago
Evaluate the radical.<br> (Look at the photo)<br> Enter your answer in the box.
faltersainse [42]

Answer:

3

Step-by-step explanation:

This is a cube root so think what times what times what is 27?

3 x 3 x 3 = 27 so the answer is 3

Same problem explained

https://www.mathsisfun.com/numbers/cube-root.html  < in detail.

Very helpful website check it out

(It's not a random download link or whatever, look at my profile- i dont do that, its completely safe and legit.)

3 0
3 years ago
A kangaroo hops 2 kilometers in 3 minutes. At this rate, how far does the kangaroo travel in 2 minutes? *
Dmitrij [34]

Answer:

At a speed of 2 km every 3 minutes, in 2 minutes the kangaroo would travel 1,333 km.

Step-by-step explanation:

If a kangaroo hops 2 kilometers in 3 minutes, to calculate how much distance this animal hops in 2 minutes, the following calculation should be performed:

2 km / 3 min = 0.666 km per minute (2/3 x 2)

0.666 km per minute x 2 minutes = 1.333 kilometers in 2 minutes (0.666 x 2)

Therefore, at a speed of 2 km every 3 minutes, in 2 minutes the kangaroo would hop 1,333 km.

5 0
3 years ago
From the beginning of the day the temperature rose 15° so that by 4 pm it was 87°. What was the temperature at the start of the
zubka84 [21]
Your answer is A, 72°.
4 0
3 years ago
Read 2 more answers
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