3 years ago

Question is 20 points

Mathematics

2 answers:

Tom [10]3 years ago

8 0

Answer:

the answer is c

Step-by-step explanation:

guajiro [1.7K]3 years ago

3 0

The answer is the third one

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2n - n+5=3 help please

Doss [256]

n=-2 i got this answer because i combined like terms first like 2n-n

we get just n after

and then, we subtract the 5 from both sides to get it on the opposite side of the equal sign.. we get x=-2

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3 years ago

Round 47125 to the nearest ten, nearest hundred, nearest thousand, and to the nearest ten yhousand

Artemon [7]

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Hundred: 47100
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3 years ago

PLEASE SOLVE QUESTION 13 AND 14 DONT STEAL THE POINTS

Varvara68 [4.7K]

Answer:

See below for solution.

Step-by-step explanation:

$Q13)$ $\frac{\sqrt{11} - \sqrt{5} }{\sqrt{11}+\sqrt{5} }$ = $x - y\sqrt{55}$

LHS :-

= $\frac{\sqrt{11} - \sqrt{5} (\sqrt{11}-\sqrt{5}) }{\sqrt{11}+\sqrt{5} (\sqrt{11}-\sqrt{5}) }$

= $\frac{11-2\sqrt{55}+5 }{11 - 5}$

= $\frac{16-2\sqrt{55} }{6}$

= $\frac{2(8-\sqrt{55}) }{2(3)}$

= $\frac{8-\sqrt{55} }{3}$

=> x = 8/3 and y = 1/3

=> Option B

$Q14)$ $\frac{4}{216^{-2/3} }$ + $\frac{1}{256^{-3/4} }$ + $\frac{2}{243^{-1/5} }$

= 4 x (∛216)² + ( $\sqrt[4]256}$ )³ + 2 x ( $\sqrt[5]{243}$ )

= 4 x 36 + 64 + 2 x 3

= 144 + 64 +6

= 144 + 70

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2 years ago

Danny owes his dad $200. He mows lawns after school and on the weekends. He charges $28 a lawn, but pays his friend Sam $12 a la

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4 years ago

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Mumz [18]

A=18 !!! i hope this helps!

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3 years ago

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