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3 years ago

5

What is the value of y if x = 8? y = 4 + x + 6

2 answers:

irakobra [83]3 years ago

8 0

Y = 4 + x + 6
y = 4 + 8 + 6
y = 18

Anvisha [2.4K]3 years ago

4 0

X = 8
y = 4 + x + 6
(Replace the varibales)
y = 4 + 8 + 6
(Add)
y = 18

So the value of y is 18.

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Sav [38]

Answer:

28.42 > 28.404

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3 years ago

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Solve 50q-43=52q-81

ladessa [460]

Move the variables to one side and the constants to the other

50q - 43 = 52q - 81

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What's the y-intercept of the equation: 5x+2y=20<br>A. (4,0)<br>B. (5,0)<br>C. (0,2)<br>D. (0,10)

AveGali [126]

Answer: D. (0,10)

Why:
Your given equation is 5x+2y=20, so in order to find the y-intercept, we must put it in slope-intercept form, a.k.a. y=max+b.

To do this, subtract 5x from both sides. This will then give you 2y=-5x+20.

And to fully simply, divide both sides by 2. Finally, you get y=(-5/2)x+10. And since we know b in slope-intercept form is the y-intercept, and 10 is b in our final function/equation. We get the answer of y-intercept=(0,10)

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2 years ago

A square is inscribed in a circle. If the area of the square is 9 in2, what is the ratio of the circumference of the circle to t

IgorC [24]

The ratio of the circumference of the circle to the perimeter of the square is $\pi \sqrt{2}:4$

<em><u>Explanation</u></em>

Area of the square = 9 inch²

If the side length of the square is $a$ , then

$a^2 = 9 \\ \\ a= \sqrt{9} =3$

So the side length of the square is 3 inch.

Now as the square is inscribed in a circle, so the diagonal of the square will be diameter of the circle.

Length of the diagonal of square = $a\sqrt{2} = 3\sqrt{2}$ inch

So, the diameter of the circle $= 3\sqrt{2}$ inch

If the radius of the circle is $r$ , then

$2r = 3\sqrt{2} \\ \\ r= \frac{3\sqrt{2}}{2}$

Circumference of the circle, $2\pi r= 2\pi *\frac{3\sqrt{2}}{2}= 3\pi \sqrt{2}$ inch

and Perimeter of the square, $4a = (4*3)inch= 12$ inch

So, the ratio will be: $3\pi \sqrt{2} : 12 = \pi \sqrt{2} : 4$

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