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Blizzard [7]
3 years ago
8

If a=x+y and b=x-y show that (a+b)2=4x2​

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

Answer:

see explanation

Step-by-step explanation:

a + b = x + y + x - y = 2x , then

(a + b)² = (2x)² = 4x² ← as required

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a rhombus as an area of 72 ft and the product of the diagonals is 144. What is the length of each diagonal?
SashulF [63]

A = (1/2)(x)(y)

Let x = diagonal 1

Let y = diagonal 2

The product of xy = 144.

This means that x = 12 and y = 12.

So, 12 • 12 = 144

Each diagonal is 12 feet.

Prove:

72 feet = (1/2)(12)(12) feet

72 feet = (1/2)(144) feet

72 feet = 72 feet

6 0
4 years ago
Write this in set notation [-13; 4 )​
juin [17]

Answer:

13\leq x

Explanation:

If a side has a bracket [] then it is less than or equal to, meaning that it can reach that exact number.

However, if a side has a parentheses () then it is simply less than. It cannot be that exact number, but it can be even slightly less than that number.

6 0
3 years ago
What integer is equivalent to 25 3/2
antiseptic1488 [7]
<span><span><u>Answer</u>
26 1/2 is not equivalent to and integer but it can be approximated to 27 which is an integer.

<u>Explanation</u>
An integer is a whole number. It is a number that is not a fraction.
253/2=25+3/2=25+1 1/2=26 1/2
</span><span>26 1/2 is not equivalent to and integer but it can be approximated to 27 which is an integer.
</span></span>
3 0
3 years ago
Read 2 more answers
Jenson has a basket containing oranges, apples, and pears. He picks a piece of fruit from the basket 40 times, replacing the fru
katovenus [111]

Answer:In this question, we're trying to find how many apples Jenson picked from the basket.

Lets gather information that can help us.

Important information:

Picked a fruit from a basket 40 times

Probability of picking an apple is 0.3

With the information above, we can solve the question.

We know that he picked up a fruit 40 times, but we need to find how many apples he picked up during the 40 times.

The probability of picking an apple is 0.3, which is equivalent to 30%

This means that 30% of the 40 times he picked an apple.

We would multiply 40 by 0.3 to get our answer.

This means that Jenson picked 12 apples.

I hope this helped you out.

Good luck on your academics.

Have a fantastic day!

Read more on Brainly.com - brainly.com/question/12981771#readmore

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What do you do on Brainly?
belka [17]
On Brainly, you ask questions associated with either homework, things your learning in class or questions you have in any of the categories listed. You also want to help others by answering their problems.
4 0
3 years ago
Read 2 more answers
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