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2 years ago

Find thee value of a2+b2

Mathematics

2 answers:

GaryK [48]2 years ago

6 0

Answer And Step-by-step Explanation :

a^2 + b^2 = (a + b)^2 - 2ab

gregori [183]2 years ago

4 0

Answer: 2a+2b

Step-by-step explanation:

If this is just algebra, then all you need to do is simplify the expression.

it is basically just:

a×a+b×b

So it is basically just: 2a+2b

I dunno if this is correct, but this is how I was taught. :)

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Jacob needs to collect at least 120 cans for a food drive to earn community service credit. He has already collected 64 items.

dalvyx [7]

An inequality that represent the number of cans, c, that Jacob must still collect is $c\geq 56$ .

Step-by-step explanation:

Here we have , Jacob needs to collect at least 120 cans for a food drive to earn community service credit. He has already collected 64 items. We need to solve the following :

Part A:

Write and solve an inequality to represent the number of cans, c, that Jacob must still collect.

Jacob has collected 64 cans . Jacob need to collect at least 120 cans for a food drive to earn community service credit , Let Number of cans that Jacob have to collect is c , So following is the inequality for above scenario:

⇒ $c+64\geq 120$

⇒ $(c+64)-64\geq 120-64$

⇒ $c\geq 56$

Therefore , An inequality that represent the number of cans, c, that Jacob must still collect is $c\geq 56$ .

8 0

3 years ago

Can you help me ? Look at the question

stira [4]

Answer:

The answer is c

Step-by-step explanation:

This is because you subtract 6 to get 9 ≤ -3x then when you divide to get x by itself, then the sign has to flip so you end up with -3≥x. And when you put it on a numbers line the arrow or way it goes is the way the arrow is pointing, so if the sign is like this > it would go to the right on the number line and the converse is true as well please give me brainliest.

6 0

2 years ago

In 2011, Americans used 1.86 x 1011

Snezhnost [94]

Answer:

In 2011, Americans used 1.86x10" kilowatt-hours to light their home kilowatt-hours to run their computers and computer equipment. Circle the number that correctly completes the statement

Step-by-step explanation:

hope this helped

4 0

1 year ago

Lin has a number of Playbills from the Broadway shows that he has attended over many years all collected in one big box. One day

hammer [34]

Number of Playbills = P

First he arranged them all into four piles, but there was one Playbill left over. (n per pile)

P = 4n + 1

So then he tried five piles, but this time there were three Playbills left over. (m per pile)

P = 5m + 3

So then he tried seven piles, but there were 4 Playbills left over. (j per pile)

P = 7j + 4

4n + 1 = 5m + 3 ==> 4n = 5m + 3 -1 = 5m + 2

4n = 5m + 2

n = (5m + 2)/4

5m + 3 = 7j + 4

7j = 5m + 3 - 4 = 5m -1

j = (5m -1)/7

Making a table for different values of n, m and j that result in integers and keep P less than 100:

n = 13

m = 10

j = 7

P = 4(13) + 1 = 53

P = 5(10) + 3 = 53

P = 7(7) + 4 = 53

Answer:

Lin has 53 Playbills

8 0

7 months ago

A student estimated that it would take 3 hours to write a book report, but it actually took her 5 hours. What is the percent err

ValentinkaMS [17]

Answer:

The Percent Error for her estimate = 66.66%

Step-by-step explanation:

The initial estimate time to write a book = 3 hours

The final estimate to write a book = 5 hours

⇒ The Error in the estimation = Final estimate - Initial Estimate

= 5 hours - 3 hours = 2 hours

Now, $\textrm{Percentage Error} = \frac{\textrm{Total error}}{\textrm{Initial Estimate}} \times 100$

= $\frac{2 }{3} \times 100 = 66.66$

Or, the Percentage in Error = 66.66%

4 0

2 years ago