Whats 23.5 in expanded form

Answers

Answer 1

Answer: twenty+three+five tenths your welcome

Answer 2

Answer: the answer is 20+3+.5

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How do you find the circumfrence and area of a circle? Examples please or a link to a website.

Answers

Area or a circle
A= 3.14 (pi) multiplied by the radius to the second power
So if a circles radius is 3 cm it would be pi multiplied by 9 which equals 28.27 cm2
Circumference
C= pi multiplied by the diameter

To find the corcumference of the circle the formula is 2(pi)r
to find the area of the circle the formula is (pi)(r)(r)

In a sixth-grade class, the ratio of boys to girls is 3:2. How many boys and how many girls could there be in this class? Is there more than one possible answer? Explain.How do you solve?

Answers

Answer:

There could be 6 boys and 4 girls

There are several possible answers.

Step-by-step explanation:

Consider the provided ratio.

the ratio of boys to girls is equal to 3:2, it means that for every 2 girls in the class there will be 3 boys.

Let us assume there are 6 boys in the class.

Then the number of girls would be 4 because the ratio still have to be 3 to 2.

$(6)/(4)= (3)/(2)$

We can use algebra to figure this out or you can use logic.

The boys to girls ratio is 3:2, This can be written as:

$(boys)/(girls) =(3)/(2)$

If we multiply numerator and denominator by 2 we get.

$(boys)/(girls) =(3* 2)/(2* 2)=(6)/(4)$

That means for every 6 boys there are 4 girls, either way the ratio remains the same.

Similarly If we multiply numerator and denominator by 3 we get.

$(boys)/(girls) =(3* 3)/(2* 3)=(9)/(6)$

That means for every 9 boys there are 6 girls, and the ratio remains the same.

So there are more than one possible answer.

Hence, there are several possible answers.

There's an infinite number of possible answers because there might be any multiplication of 3 for boys and any multiplication of 2 for girls. So, for example:

There might be 3 boys and 2 girls.
There might be 6 boys and 4 girls.
There might be 9 boys and 6 girls.
There might be 12 boys and 8 girls.
etc...

In each case the ratio stays the same - 3 : 2.

Of course there probably can't be more than a few dozens of people in one class, but theoretically we can raise the numbers up to infinite.

If it took Brianna 4 hours to mow 20 lawns then at that rate how many hours does it take her to mow one lawn?

Answers

5 hours to mow one lawn, because 20 divided by 4=5

it would take at least 15 minutes to mow her own lawn

Fill in the blank.if necessary, use the slash marks (/) for a function bar. if sin theta= 3/5, then cos theta=

Answers

Answer:

4/5 or -4/5

Step-by-step explanation:

We are going to use the Pythagorean Identity:

$\sin^2(\theta)+\cos^2(\theta)=1$

We are given the value of $\sin(\theta)$ which is 3/5 so plug that in:

$((3)/(5))^2+\cos^2(\theta)=1$

Simplify:

$(9)/(25)+\cos^2(theta)=1$

Subtract 9/25 on both sides:

$\cos^2(\theta)=1-(9)/(25)$

$\cos^2(\theta)=(16)/(25)$

Take the square root of both sides:

$\cos(\theta)=\pm \sqrt{(16)/(25)}$

$\cos(\theta)=\pm (4)/(5)$

Carl runs around a track 1.17 min how long would it take him to run 1.5 laps at his rate?( round to 2 places)

Answers

Answer

It will take Carl 1.76 minutes to run 1.5 laps

Explanation

We know from our problem that Chris runs a lap in 1.17 minutes, so he will run half a lap in half the time: $(1.17)/(2) =0.585$ minutes.

We have the time it takes Chris to run 1 lap and the time it takes him to run half (0.5) laps, so, to find how long it takes him to run 1.5 laps, we just need to add the two times:

Total time = 1.17 minutes + 0.585 minutes

Total time= 1.755

Since we need to round to two places, we check if the number after the 2nd place is 5 or bigger; if it is, we add 1 to the number on the 2nd place. The number after the 2nd place is 5, so we add 1 to the 5 in the 2nd place to get:

Total time = 1.76 minutes

Carl will run 1.5 laps in 1.76 minutes

What is the volume of the right rectangular prism?A prism has a height of 15 millimeters and a base area of 49 square millimeters.

64 Millimeters cubed

128 Millimeters cubed

735 Millimeters cubed

1,470 Millimeters cubed

Answers

The answer is 735mm^3.

What is the volume of the right rectangular prism?

The volume of a right rectangular prism (V) = l × w × h,

where

“l” is the base length

“w” is the base width

“h” is the height of the prism

Given,

Height of prism = 15mm

The Base area of prism = 49^2mm

As we know the formula of base area = lw

which equals to lw = 49^2mm

now, the volume of the right rectangular prism is = lwh

=49*15 mm^3

= 735mm^3

Learn more about right rectangular prism on: brainly.com/question/3319055

#SPJ2

Answer:

735 mm³

Step-by-step explanation:

refer to attached picture

volume = lwh

given: area of base = lw = 49 mm²

hence formula can be re-written

volume = (area of base) x h

= 49 x 15

= 735 mm³

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