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LuckyWell [14K]
3 years ago
9

I need help completing this problem ASAP

Mathematics
2 answers:
Sergio039 [100]3 years ago
6 0

Answer:

A.    8\sqrt{5}

Step-by-step explanation:

\sqrt{45} + \sqrt{125} =

= \sqrt{9 \times 5} + \sqrt{25 \times 5}

= 3\sqrt{5} + 5\sqrt{5}

= 8\sqrt{5}

Evgen [1.6K]3 years ago
5 0

Answer:

8 sqrt(5)

Step-by-step explanation:

sqrt(45) + sqrt(125)

Rewriting

sqrt(9*5) + sqrt( 25 *5)

we know sqrt(ab) = sqrt(a) sqrt(b)

sqrt(9) sqrt(5) + sqrt(25) sqrt(5)

3 sqrt(5)+5 sqrt(5)

Add like terms

8 sqrt(5)

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Please help!! Due tomorrow!!
Marysya12 [62]

The number of doughnuts in bags is 4 times the number of bags of doughnuts. So the number in B bags of doughnuts will be

... 4B

The number of doughnuts in cartons is 10 times the number of cartons of doughnuts, so the number in C cartons will be

... 10C

The total number of doughnuts (T) is the sum of those in bags and those in cartons:

... T = 4B +10C

3 0
4 years ago
When 6x² - 4x+3 is subtracted<br> from 3x²–2x+3, the result<br> is
mr_godi [17]
Let's subtract then: 3x2 - 2x + 3 - (6x2 - 4x + 3)

taking out of the bracket with a changed sign: (there is a minus in front of the bracket)

3x2 - 2x + 3 - 6x2 + 4x - 3
let's reshuffle them so that similar terms are together:
3x2 - 6x2 - 2x + 4x + 3  - 3

Adding up similar terms:

-3x2 + 2x - that's our option 2!


4 0
3 years ago
Show me the work and answer please
BARSIC [14]
A quick way to answer all 1-10 is to multiply the starting price by 1.##. So for number 1 the equation would be 18 x 1.07 which equals $19.26. Question 2 would be
14 x 1.20 which equals $16.80. I think you got it from here.
6 0
3 years ago
If x =4 calculate the value of 2x squared - 5
Vlad1618 [11]
<span>2x squared - 5 
= 2(x)^2 - 5
= 2(4)^2 - 5
= 2(16) - 5
= 32 - 5
= 27</span>
3 0
3 years ago
The equation yˆ=−5.131x2+31.821x−3.333 approximates the number of people standing in line to catch a commuter train x hours afte
Amanda [17]
Y ( 2 ) = - 5.131 · 2² + 31.821 · 2 - 3.3333 = 
= - 5.131 · 4 + 63.642 - 3.3333 = -20.524 + 63.642 - 3.3333 = 39.78 ≈ 40
Answer: B ) 40.
6 0
3 years ago
Read 2 more answers
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