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SIZIF [17.4K]
2 years ago
12

7. A square has an area of 20 square feet. What is the length of a side of the square, in feet?

Mathematics
2 answers:
Gekata [30.6K]2 years ago
8 0

Answer:

2√5

Step-by-step explanation:

Since all the sides of a square are the same, we can take the square root of the area.

√20 = 2√5

Best of Luck!

Gennadij [26K]2 years ago
6 0

Answer:

5

Step-by-step explanation:

There are 4 equal sides on a square so 20/4 which is 5.

Hope this helps plz mark brainliest :D

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Please Help!! :D<br><br> Find the value of y.
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Answer:

y=2\sqrt{2}

Step-by-step explanation:

The Pythagorean theorem is a theorem that can be applied to the sides of a right triangle. Please note that a right angle refers to an angle with a measure of (90) degrees. A box around an angle shows that the angle is a right angle, or has a measure of (90) degrees. The Pythagorean theorem states the following,

a^2+b^2=c^2

Where (a) and (b) are the legs of the triangle, or the side adjacent to the right angle in the right triangle. (c) is the side opposite the right angle, or the hypotenuse of the triangle. One can apply this theorem to the smallest triangle in the diagram to find (y),

a^2+b^2=c^2

Substitute,

(1)^2+(y)^2=(3)^2

Simplify,

(1)^2+(y)^2=(3)^2

1+y^2=9

Inverse operations,

1+y^2=9

y^2=8

y=\sqrt{8}

Take a factor from out of the square root. Remember that a number times itself under the radical is equal to the number. This can be simply stated as the following: (\sqrt{a*a}=a),

y=\sqrt{8}

8=2*2*2

y=\sqrt{8}

y=\sqrt{2*2*2}

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2 years ago
Which graph represents (,y)-pairs that make the equation y = 2x true?
Veseljchak [2.6K]

Answer:

Pairs (2,4), (4,8) and (5,10) makes the equation y=2x true

Step-by-step explanation:

By using the equation y=2x, eval the following points (gathered from the attached picture)

1. (2,4) which leaves us 4=2*2

2. (4,8) which leaves us 8=4*2

3. (5,10) which leaves us 10=5*2

All points from this graph satisfies the equation y=2x

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Step-by-step explanation:

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3 years ago
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Answer: x= 12

Step-by-step explanation:

3x+6 = 42

or, 3x = 36

so, x = 12

4 0
2 years ago
Read 2 more answers
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