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2 years ago

5

Find the values of x and y.

1 answer:

3241004551 [841]2 years ago

3 0

X is 75 degrees and y is 105 degrees

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Choose the equation of a circle with radius 6 and center (2, -3).

Rufina [12.5K]

Answer: $(x-2)^2 + (y+3)^2 = 36\\\\$

Work Shown:

$(x-h)^2 + (y-k)^2 = r^2\\\\(x-2)^2 + (y-(-3))^2 = 6^2\\\\(x-2)^2 + (y+3)^2 = 36\\\\$

Note that (h,k) = (2,-3) is the center and r = 6 is the radius. The last line is not expanded out using the FOIL rule because its common practice to leave it in $(x-h)^2 + (y-k)^2 = r^2\\\\$ form. This form allows the reader to quickly determine the center and radius (rather than have to do a lot of algebraic steps before hand).

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1 year ago

Elena needs to cut a square piece of wood with an area of 69 square inches.How long should the sides of the square be, rounded t

Reil [10]

You need to find the root of 69 since the length and width are multiplied to get the area, therefore it would be 8.3 inches.

5 0

3 years ago

Read 2 more answers

F(x)= <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B4x%20-%207%7D%7B10%7D%20" id="TexFormula1" title=" \frac{4x - 7}{10} "

Naily [24]

Answer:

To find f-¹(x) of f(x) equate f(x) to y

That's

f(x) = y

So we have

$y = \frac{4x - 7}{10}$

Next interchange the variables that's x becomes y and y becomes x

That's

$x = \frac{4y - 7}{10}$

Next make y the subject

Cross multiply

We have

4y - 7 = 10x

Move -7 to the right side of the equation

4y = 10x + 7

Divide both sides by 4

We have the final answer as

$y = \frac{10x + 7}{4}$

So

$f ^{ - 1} (x) = \frac{10x + 7}{4}$

Hope this helps you

7 0

2 years ago

Jaylynn was buying new mascara. She bought it on sale for $5.56. If the price represents a 20% discount from the original price,

Len [333]

X-0.20x=5.56
Solve for x
So the original price is
X=6.95

4 0

2 years ago

3 6/12 + 3 9/12. ..

Ludmilka [50]

Answer:

7

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers