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sineoko [7]
3 years ago
14

Find the difference: 99.45 – 2.25 = ?

Mathematics
2 answers:
Lera25 [3.4K]3 years ago
8 0
97.2 Would be your answer, so D. 
Hope this helps!!
Reika [66]3 years ago
4 0
Here

99.45
-2.25
_____
97.2
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What is 19.6 divided by 7
Lemur [1.5K]
19 divided by 7 = 2.8
7 0
3 years ago
Charlotte recorded the number of minutes she spent exercising in the past ten days: 9, 13, 5, 2, 9, 1, 14, 3, 5, 7. Find the med
Nuetrik [128]

Answer:

<u>The median is 7.</u>

Step-by-step explanation:

In order to find the median, you need to ut the numbers in either least to greatest form, or greatest to least (FIRST).

I'm gonna do both as an example.

Greatest to least:

14, 13, 9, 9, 7, 5, 3, 2, 1

Least to greatest:

1, 2, 3, 5, 7, 9, 9, 13, 14

<u><em>It is REALLY important that you use ALL of the numbers you are given, even if there are two or more of the same number.</em></u>

The next thing you need to do is find the number that is in the middle.

It will be the same for both least to greatest AND greatest to least.

You can either count one from either side, going in a pattern, OR you can count how many there is, divide it by 2, and whatever answer you get, count that many times over from one side.

In this case, your answer goes like this:

since there are 9 numbers, and 9 is not an even number, you will have only one median. Having 2 medians IS normal and it IS ok.

In this case, you want to go down one number (from 9) and divide that. So you do 8 divided by 2, which is 4. Count that many times over and you have your answer, 7.

I hope this helped you!

Have a great dayyyy

5 0
3 years ago
A certain forest covers an area of 3100. Suppose that each year this area decreases by 4.75% . What will the area be after 7 yea
e-lub [12.9K]

Answer:

Step-by-step explanation:

This can be represented as exponential decreasing function.

   y = a(1 - r)t

       a = starting amount

       r = rate

       t = years

   y = 1600(1 - .0725)15

     = 1600(.9275)15

     = 1600(.32337673)

     = 517.40

In 15 years,  the forest will shrink in size to 517.40 km2

3 0
3 years ago
Read 2 more answers
A cone is 10 inches tall and has a radius of 3 inches. What is the cone’s volume?
monitta
Area of the base is πr² where r is the radius. The volume of a cone is ⅓ πr²h where h is the height.
So the volume is ⅓ π×9×10=30 π=94.25 cu in approximately.
4 0
3 years ago
(with steps please) Find the inverse Laplace transform, f(t), of the function: s/((s^2+9)*(s^2+16))
sveta [45]

Answer:

Step-by-step explanation:

Given is a Laplace transform of f(t) as

F(s) = \frac{s}{(s^2+9)(s^2+16)}

Let

\frac{s}{(s^2+9)(s^2+16)}=\frac{As+B}{(s^2+9)}+\frac{Cs+D}{(s^2+16)}

Solving we get \:s=s^3\left(A+C\right)+s^2\left(B+D\right)+s\left(16A+9C\right)+\left(16B+9D\right)

A+C=0:  B+D=0: 16A+9C=1 and 16B+9D=0

Solving B=0=D

A=\frac{1}{7} \\C=\frac{-1}{7}

Hence we have

f(t) = inverse Laplace of

\frac{1}{7}[ \frac{s}{(s^2+9)}-\frac{s}{(s^2+16)}]

=\frac{1}{7} (cos 3t-cos 4t)

4 0
4 years ago
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