2 years ago

Help me!! i am not good at this virtual algebra stuff

Mathematics

1 answer:

Gekata [30.6K]2 years ago

8 0

The answer is 28

Step-by-step explanation:

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Simplify.

Sidana [21]

<h3>Answer: $3\sqrt{7}$ </h3>

3*sqrt(7)

3 times the square root of 7

====================================================

Explanation:

I'm assuming the V stands for square root. You can write sqrt(63).

$\sqrt{63} = \sqrt{9*7}\\\\\sqrt{63} = \sqrt{9}*\sqrt{7}\\\\\sqrt{63} = 3\sqrt{7}$

The idea is to factor 63 in such a way that one factor is the largest perfect square possible, that way we can pull the root apart to simplify as shown above. The rule I used for the second step is $\sqrt{x*y} = \sqrt{x}*\sqrt{y}$

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2 years ago

0.2 is 1/10 of 2 true or false

Elanso [62]

Answer:

true

Step-by-step explanation:

1/10=0.1

0.1*2=0.2

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2 years ago

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The length of a rectangle is 6 feet more than its width. Find the widthif its perimeter is 76 feet.

Phantasy [73]

87!...I Think............!

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2 years ago

Convert -1.2i - 1.6j to polar cordinates

Artemon [7]

Answer:

Step-by-step explanation:

z=xi+yj

x=-1.2=r cosθ (say)

y=-1.6=r sinθ(say)

square and add

r²cos²θ+r² sin ² θ=(-1.2)²+(-1.6)²=1.44+2.56=4

r²=4

r=2

divide

tanθ=y/x=-1.6/(-1.2)=16/12=4/3

θ=tan ^{-1}(4/3)≈53.13°

so polar coordinates are (2,53.13°)

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2 years ago

Put the equation in standard form with a positive X coefficient. y-5 = -2 (x+6)

iVinArrow [24]

The answer is 2x+y+7=0.

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3 years ago