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lutik1710 [3]
3 years ago
15

Multiply (√a -2) (√a+2)

Mathematics
1 answer:
andreev551 [17]3 years ago
6 0

(\sqrt{a} -2)(\sqrt{a}+2)\\=\sqrt{a}*\sqrt{a} +2\sqrt{a} -2\sqrt{a} -2*2\\=a - 4

Hope that helps!

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Which set of numbers could represent the lengths of the sides of a right triangle?
Vera_Pavlovna [14]

Answer:

8, 15, 17

Step-by-step explanation:

The 2nd option. You know this by using this math formula: a^2 + b^2 = c^2. That is the formula to find a right triangle. So if you square 8 and 15 you get 64 and 225, and if you add them together you get 289, which is 17^2. Hope this helps! :)

8 0
3 years ago
You buy a 1:1000 scale model of the Statue of Liberty during a trip to New York City. The height of the model is 9.3 centimeters
yanalaym [24]
The Statue of Liberty is 93 meters tall. If you have a model that is 9.3 centimeters and is 1/1000 the size of the actual Statue, then you would multiply the model by 1000 to get 9,300 centimeters. To get this number in meters, you would divide your result by 100. This would give you 93 meters.

Sorry if the explanation is worded poorly, the answer is 93 meters.

7 0
3 years ago
HELLPPP DUE TODAY AT 4
Natalka [10]

Answer:

2 and 2/3 for the first question

-1/8 for the second one

-1/5 for the third one

ive never done this type of question or maybe it was too long ago for me to remember but out of this answer choices i would guess that its the last one

this is 3

Step-by-step explanation:

you add the numerators which is the top number in order to get 2 and 2/3rds

you subtract 5 from 4 to get -1/8

same situation as the last one, subtract 15 from 11 to make it a negative 4/20 and then simplify that by dividing it by four to get 1/5th

this one i dont understand or remember how to do very well but if i had to guess its the last answer choice

this one you add 3/4 plus 1/4 in order to get 4/4 or rather 1, so basically its asking what 1+1+1 is which is 3

5 0
3 years ago
How do I solve this question? Rayne sold 3 desks at a local trade show. he payed $4.00 to rent the booth. he gave half of his re
ra1l [238]

Answer:

$125

Step-by-step explanation:

I suspect there's an error in the problem statement.  Revenue is the money made from selling the desks.  Profit is the revenue from the desks minus the cost of the booth rental.

If Rayne gives half of his <em>profit</em> to the carpenter, and x is the price per desk, then:

185.50 = ½ (3x − 4)

371 = 3x − 4

375 = 3x

x = 125

5 0
4 years ago
MayaKay and Alyssa work in the returns department for an online company. MayaKay can process 24 returns in 3 hours. Alyssa takes
Ivanshal [37]

Answer:

I think its Alyssa

Step-by-step explanation:

they both can process 8, but it took Mayakay 3 hours to process 24 and it took Alyssa 5 hours to process 40, so even though Alyssa time is longer she processed more

6 0
3 years ago
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