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3 years ago

WHAT IS 50% OF 9? ROUND TO THE NEAREST HUNDRETH

2 answers:

7 0

50% is equal to the so we can easily divide 9 by 2 to get your answer 4.50 there is no hundreths for it is a clean divide (4.5×2=9)

Tcecarenko [31]3 years ago

7 0

Convert 50% to a decimal by moving the decimal point two places to the left:

50% = 0.50

Multiply 0.50 * 9 = 4.5

So, your answer is 4.5.

Hope this helps, please mark brainliest and have an amazing evening!

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Can some explain how to do this?

zepelin [54]

Answer:

Exact Area = 210.25pi - 210
Approximate Area = 450.185

The units for the area are in square inches or in^2. The approximate value shown above is when using pi = 3.14

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Explanation:

Use the pythagorean theorem to find the length of the hypotenuse

a = 20
b = 21
c = unknown

a^2 + b^2 = c^2

20^2 + 21^2 = c^2

400 + 441 = c^2

c^2 = 841

c = sqrt(841)

c = 29

The hypotenuse is 29 inches long. This is the diameter of the circle. Half of that is the radius at r = d/2 = 29/2 = 14.5 inches.

The area of the circle is...

A = pi*r^2

A = pi*(14.5)^2

A = pi*210.25

A = 210.25pi

Which is exact in terms of pi

We'll subtract off the triangular region as this isn't shaded in. The area of the triangle is base*height/2 = 20*21/2 = 420/2 = 210 square inches.

So the shaded region is therefore 210.25pi - 210 square inches

This approximates to 210.25*3.14 - 210 = 450.185 when using the approximation pi = 3.14; use more decimal digits of pi to get a more accurate value.

4 0

3 years ago

The graph shows the motion of two cars starting at different places on a highway. Their speeds can be compared by comparing the

Mars2501 [29]

Answer:the dot goes in in the blue line in 0 and 150 just like the blue line

Step-by-step explanation:I hope you get what I mean

8 0

3 years ago

HELP!!!..........................................

geniusboy [140]

Answer:

A.) the function is increasing on the interval (-∞, 0) and decreasing on interval (0,∞)

Step-by-step explanation:

7 0

2 years ago

20. what us the area of the figure:

Varvara68 [4.7K]

If the angle in B is 45º, that means the angle in A is also going to be 45º, considering it's a right triangle, so AC and BC are they have the same length.
Then using Pythagoras, you'll get that $AC^{2} + BC^{2}$ equals $AB^{2}$ .
Now, you know that AC=BC and that AB=24.
So you'll get $2AC^{2} =24^2$ . You do the square root in both sides and you get that 2AC=24 and AC=12.

Now that you know that both AC and BC equal 12, you can find the area by just multiplying them and then diving them by 2. (The formula for the area of a triangle is half base multiplied by height, and in a right triangle, if a cathetus is the base, the other cathetus<span> will be the height)

And so the area is equal to 72.</span>

8 0

3 years ago

Please help me. I'm stupid.

Gwar [14]

Answer:

$\displaystyle 36\:units$

Step-by-step explanation:

Split up this Isosceles, Right Triangle into two congruent smaller right triangles. The reflexive side [the line that splits them apart] is 6 units, and both legs are 8 units, leaving the hypotenuses to AUTOMATICALLY be 10 units, according to the Pythagorean Theorem:

$\displaystyle a^2 + b^2 = c^2 \\ \\ 6^2 + 8^2 = 10^2 \\ \\ 36 + 64 = 100 \\ \\ 100 = 100$

With this Pythagorean Triple, we know that our dimensions are correct. Now, to find the perimeter, just add up all the sides EXCEPT for the divider:

$\displaystyle 2[10] + 2[8] = 20 + 16 = 36$

I am joyous to assist you anytime.

3 0

3 years ago