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3 years ago

How many square feet of clear grass will be needed for the window? (Please Provided Explanation of Answer)

Mathematics

1 answer:

Reil [10]3 years ago

7 0

Answer:

40 sq ft

Step-by-step explanation:

A= bh

A= (4)(10)

A= 40

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The sales tax in your city is 4.4%, and an item costs $3

Aloiza [94]

Answer:

We would pay $.13 or 13 cents

Step-by-step explanation:

To find the tax on an item, multiply the amount by the tax rate

tax =3 * 4.4%

Change to a decimal form

= 3 *.044

=.132

We round to the nearest cent

=.13

We would pay $.13 or 13 cents

7 0

3 years ago

The general form of a circle is given as x^2+y^2+4x - 12y + 4 = 0. A) What are the coordinates of the center of the circle? B) W

Alex_Xolod [135]

Answer:

center = (-2, 6)

radius = 6

Step-by-step explanation:

<u>Equation of a circle</u>

$(x-a)^2+(y-b)^2=r^2$

(where (a, b) is the center and r is the radius)

Therefore, we need to rewrite the given equation into the standard form of an equation of a circle.

Given equation:

$x^2+y^2+4x-12y+4=0$

Collect like terms and subtract 4 from both sides:

$\implies x^2+4x+y^2-12y=-4$

Complete the square for both variables by adding the square of half of the coefficient of $x$ and $y$ to both sides:

$\implies x^2+4x+\left(\dfrac{4}{2}\right)^2+y^2-12y+\left(\dfrac{-12}{2}\right)^2=-4+\left(\dfrac{4}{2}\right)^2+\left(\dfrac{-12}{2}\right)^2$

$\implies x^2+4x+4+y^2-12y+36=-4+4+36$

Factor both variables:

$\implies (x+2)^2+(y-6)^2=36$

Therefore:

center = (-2, 6)
radius = √36 = 6

7 0

2 years ago

In Jeopardy, if you answer a question

Nata [24]

-150 points cause 200-350= -150

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3 years ago

Please help me idk this

mezya [45]

Answer: 0.4675

Step-by-step explanation: caculator

6 0

3 years ago

Express the number in scientific notation. 63,600,000

My name is Ann [436]

6.36×10^7

..............

4 0

3 years ago

Read 2 more answers