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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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Evaluate the expression –0.4(3x – 2) + 2x+4/3 for x=4
fomenos

Answer:

-1.07

Step-by-step explanation:

–0.4(3x – 2) + 2x+4/3

–0.4(24 – 2) + 8+4/3

–0.4(24 – 2) + 8+4/3

-9.6-0.8+8+1.33

-2.4+1.33

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8 0
3 years ago
14 2 7 3 9=10 insert symbols
Irina-Kira [14]

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2 years ago
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Step-by-step explanation:

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Mr. Britt is pouring a 36' x 58' concrete pad for a metal building. If concrete costs
Helga [31]

Answer:

Step-by-step explanation:

8 in × (1 ft)/(12 in) = ⅔ ft

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4 0
3 years ago
How do you find area and perimeter of a rectangle with the side lengths of 5x^2 and 12x?
valentinak56 [21]

Answer:

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Using this, we find that the area of the rectangle is 60x³, and the perimeter is 10x² + 24x.

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First let's find the area:

5x² × 12x

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Now the perimeter:

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8 0
3 years ago
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