Solve: (-5) + (-18) <br><br>A -23<br><br>B- 13<br><br>C 13<br><br>D 23

What are the ratio of 18 red button ; 12 red button?

Daniel [21]

The right answer is 3:2

7 0

3 years ago

Your friend shows you a coin collection. In it 45/50 of the coins are quarters. what percent of the coins are quarters?

Ksenya-84 [330]

Answer:

90% of them are quarters.

Step-by-step explanation:

If you take 50 and multiply it by two, you get 100. But, in order to get the right number, you have to multiply 45 by two as well. 45 x 2 is 90. 90 out of 100 is 90 percent. So 90% is the answer.

8 0

3 years ago

Read 2 more answers

A biology class examined some flowers in a local meadow. The students saw 88 perennial

dezoksy [38]

Answer:

88%

Step-by-step explanation:

3 0

3 years ago

How do you solve these ? I really need help I have a test coming up so please anyone i can't sleep because im scared I'll do bad

White raven [17]

Here is your answer, you just count to 10... Simple as that.

5 0

3 years ago

Find the radius of the circle with equation x²+y²+8x+8y+28=0

galina1969 [7]

<h2>Hello!</h2>

The answer is:

Center: (-4,-4)

Radius: 2 units.

To solve the problem, using the given formula of a circle, we need to find its standard equation form which is equal to:

$(x-h)^{2}+(y-k)^{2}=r^{2}$

Where:

"h" and "k" are the coordinates of the center of the circle and "r" is its radius.

So, we need to complete the square for both variable "x" and "y".

The given equation is:

$x^{2}+y^{2}+8x+8y+28=0$

So, solving we have:

$x^{2}+y^{2}+8x+8y=-28$

$(x^2+8x+(\frac{8}{2})^{2})+(y^2+8y+(\frac{8}{2})^{2})=-28+((\frac{8}{2})^{2})++(\frac{8}{2})^{2})\\\\(x^2+8x+16 )+(y^2+8y+16)=-28+16+16\\\\(x^2+4)+(y^2+4)=4$