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stiv31 [10]
3 years ago
7

PLEASE HELP FAST Which of the following is a step in simplifying the expression? ​

Mathematics
2 answers:
Ainat [17]3 years ago
6 0

Answer:

A

Step-by-step explanation:

i am pretty sure its A because on the top one their is one negative and all of the other one are positive.

Vedmedyk [2.9K]3 years ago
4 0

Answer:

None of them is right, the right answer is y^2/ x^10

Step-by-step explanation:

(xy^3/x^-4 y^4)^-2

= y^8/x^10 y^6

= y^2/ x^10

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Solving radical equation
Darya [45]
\bf \sqrt{k-9}-\sqrt{k}=-1\implies \sqrt{k-9}=\sqrt{k}-1\impliedby \textit{squaring both sides}
\\\\\\
(\sqrt{k-9})^2=(\sqrt{k}-1)^2\implies k-9=(\sqrt{k}-1)(\sqrt{k}-1)\impliedby \textit{FOIL}
\\\\\\
k-9=k-2\sqrt{k}+1\implies -10=-2\sqrt{k}\implies \cfrac{-10}{-2}=\sqrt{k}
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\sqrt{\cfrac{-10}{-2}}=k
6 0
4 years ago
What is the radius of a sphere with a surface area of 100πcm2?
Leona [35]

Answer:

5cm

Step-by-step explanation:

A=4πr2 =  100πcm2

r = 5

5 0
3 years ago
There are 3 blue marbles, 8 red marbles, 4 green marbles and 5 yellow marbles. What number represents 50% of the marbles?
liberstina [14]
10 marbles represent 50% of the marbles. To get this, turn the percent into a decimal. 50% equals 0.50. You the multiply the total amount of marbles (20) by the decimal, equaling 10 marbles.
4 0
3 years ago
Read 2 more answers
Please answer the question ASAP, thanks.
mezya [45]

Answer:

1/1000 and 0.001

Step-by-step explanation:

5 0
3 years ago
Dalls needs 1/4 liter of milk of a recipe is 3/10 of a liter of milk left in the carton.
dolphi86 [110]

Answer:

B)1/20 of a liter

Step-by-step explanation:

1/4 = 5/20

3/10 = 6/20

6/20 - 5/20 = 1/20

Wow.. that was easy XD

5 0
3 years ago
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