All categories

4 years ago

A: -4 B: -16 C: 15 D: -5

Mathematics

1 answer:

baherus [9]4 years ago

4 0

The answer here is B. -16

10 + -16 equals -6 and a negative divided by a negative is a positive so -6 divided by -3 is -2.

Hope this helps!

You might be interested in

Blank +710=850 can you figure it out

DaniilM [7]

The answer would be 140 because if you subtract 710 from 850 you would get 140.

7 0

3 years ago

Read 2 more answers

When i was 4 years old, my sister was half my age. now my sister is 12 years old. how old am i?

Airida [17]

Fourteeeeeeeeeeeeeeeeeeen

8 0

3 years ago

The circumstance of a circle changes from 20 to 4 after a dilation. what was the scale factor of the dilation?

VladimirAG [237]

Answer:

Option B

Step-by-step explanation:

The circumference of a circle changes from (pre-image)20 to 4(image) after a dilation.

$Scale\ Factor=\frac{Circumference\ of\ image}{Circumference\ of\ pre-image} \\\\Scale\ Factor=\frac{4}{20}\\\\Scale\ Factor=\frac{1}{5}$

8 0

3 years ago

Percent of change from 125cm to 87.5cm

VikaD [51]

Percent Change from 125cm to 87.5cm

% Change = (87.5 - 125) / 125 * 100%

   = -37.5 / 125 * 100%

   = -0.3 * 100%

   = -30 %

The percent change is -30 % or 30% decrease.

5 0

3 years ago

Read 2 more answers

The circle will be enlarged by a scale factor of 4.

sertanlavr [38]

Answer:

The area of the new circle is $144\pi \ in^2$

Step-by-step explanation:

Given:

radius of the circle = 3 in.

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared.

Let

z-----> the scale factor

x-----> the area of the enlarged circle

y-----> the area of the original circle

So;

$z^2= \frac{x}{y}$

In this problem we have

$z=4$ ----> the scale factor

The area of the original circle is equal to

$y = \pi r^2= \pi (3)^2= 9\pi \ in^2$

Now substituting value of y and solve for x we get;

$4^2=\frac{x}{9\pi}\\ \\x= 16\times9\pi= 144\pi \ in^2$

Hence Area of the new Circle is $144\pi \ in^2$

Also The area of the enlarged circle is 16 times the area of the original circle.

4 0

4 years ago