2 years ago

In a circle, what does the ratio A/r^2 represent?

1 answer:

5 0

The ratio A/r² would represent $\pi$ which is the circumference of a circle divided by its diameter.

You can see this because the area of a circle is $\pi$ r² and if you divided that by the radius squared, you are given pi which is the circumference of a circle divided by its diameter.

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X divided 4 is less than 4y minus 3

Mekhanik [1.2K]

Answer:

$x \div 4 < 4y - 3$

for the x divided by 4 you can put x/4 too if you want

3 0

2 years ago

If f(x) = 3x^2+x-2, then f(-2) =

Olin [163]

Answer:

f(-2) =8

Step-by-step explanation:

f(x) = 3x^2+x-2

Let x = -2

f(-2) = 3 * (-2)^2 + (-2) -2

= 3(4) -2 -2

=12 -2-2

=10 -2

3 0

2 years ago

Which mathematical property is needed in order to solve an equation in the form of a(b+c)=d?

Andreyy89

Answer: Distributive property

Step-by-step explanation:

Distributive property

$a(b+c)=d\\(a*b)+(a*c)=d$

6 0

3 years ago

A photo studio is going to display a portrait in their lobby. The portrait is being re-produced from a photo with dimensions 6in

Burka [1]

Answer:

the form of it will be the same

Step-by-step explanation:

the form will need to be the same or a part will be cropped so it fits the photo/portrait

6 0

3 years ago

(14x2 - 3x3 + 9x4) - (-14 + 13x3 + 11x4) simplify and answer in standard form

FromTheMoon [43]

We have that
(14x2 - 3x3 + 9x4) - (-14 + 13x3 + 11x4)=14x2 - 3x3 + 9x4 +14 - 13x3 - 11x4
(14x2 - 16x3 +14 - 2x4)

then
-2x4-16x3+14x2+14=0--------------> this is the standard form

simplify dividing the entire expression by two
-x4-8x3+7x2+7=0

the answer is
-x4-8x3+7x2+7=0

4 0

3 years ago