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grandymaker [24]
3 years ago
13

Can someone help (8grade math)

Mathematics
1 answer:
Likurg_2 [28]3 years ago
4 0

Answer:

A. 3561 ft²

Step-by-step explanation:

πr² = the area of a circle

base · height = volume

9²π = 254.47

254.47 · 14 = 3561

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-x-4y when x=-7 and y=5
sveta [45]

Answer:

-27

Step-by-step explanation:

-7 - (4 * 5)

4 0
4 years ago
Divide (8.6 x 108) by (3.2 x 103). Express your answer in scientific notation.
Arada [10]
I believe the given should be written as,
                         (8.6 x 10^8) ÷ (3.2 x 10^3)
By directly solving the expression, we obtain an answer of 
                                       268750
Which can also be written as 2.6875 x 10^5. Thus, the answer to this item is letter B. 
6 0
4 years ago
Read 2 more answers
Factor.<br><br> x^2−9x+20<br><br><br><br> Enter your answer in the box.
Zarrin [17]
First, you’d look at what can multiply together to make 20. You can multiply 10x2, 1x20, or 4x5 (or change them so each number is a negative) to make a positive 20. You then must look at which one of these can be added or subtracted together to create -9. Negative 4 and 5 can be subtracted to make -9, so you would factor them out, as well as the x^2, and get the answer (x-4)(x-5).

Answer: (x-4)(x-5)
5 0
4 years ago
Read 2 more answers
If
klasskru [66]

Answer:

f:h = 1 : 10

Step-by-step explanation:

\frac{f}{g}=\frac{1}{4}\\\\Cross multiply,\\\\4f = g\\\\g = 4f   ------------(I)\\\\\frac{g}{h}=\frac{2}{5}\\\\\frac{4f}{h}=\frac{2}{5}       from(I)\\\\\frac{f}{h}=\frac{2}{5*4}\\\\\frac{f}{h}=\frac{1}{5*2}\\\\\frac{f}{h}=\frac{1}{10}

8 0
3 years ago
Write (-infinity, -3) as an inequality.<br> X &lt;-3<br> X &gt; -3<br> x &lt;_ -3<br> X &gt;_ -3
r-ruslan [8.4K]

Answer:

x < - 3

Step-by-step explanation:

Given the interval (- ∞, - 3 )

The parenthesis on both ends indicates that x cannot equal the end values.

Thus

x < - 3 represents the interval

7 0
3 years ago
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