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sdas [7]
2 years ago
7

I need help with numbers 3,and 5 please?

Mathematics
1 answer:
LiRa [457]2 years ago
7 0
I know #3 is 2×2=4/5×5=25/7×7=49 but I dont know #4
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Dante bought a new graduated cylinder for his chemistry class. It holds 1,345.6 milliliters of liquid. If the cylinder has a rad
pentagon [3]
The formula for a cylinder's volume  is
V = π r² h
V = 1345.6
π = 3.14
r = 5.8 cm

1345.6 = 3.14 * 5.8^2 h Multiply 3.14 and 5.8^2 together.
1345.6 = 105.6 h  Divide by 105.6
1345.6 / 105.6 = h
h = 12.73 cm <<<< answer.
 I don't see anything wrong with what I've done but I don't see the answer anywhere. Estimating 1345 can be rounded to 1300. 
pi * 5.8^2 = 3 * 35 = 105 which we could round to 100.

1300 / 100 about = 13 So the answer should be in the region of 100.

I cannot see any reason to believe there is an error. If there is something that has not been copied correctly, I'd like to know what it is.

 
7 0
2 years ago
in addition to dog walking on Tuesday Eric made $45 dog sitting at one of his customers homes if he made $168 on Tuesday right i
Rus_ich [418]

Since we don't know how much Eric makes per dog, let's let <em>x </em>represent that value. Let's also let <em>y</em> represent our answer.

First, let's consider the two numbers we KNOW will be in the equation. The 56 that Eric made dog sitting and the 168 he made in total on Tuesday. Now, we're going to need to use subtraction and division in this equation.

(168 - 45) ÷ <em>x</em> = <em>y</em>


Hope this answer helped you out. :)

8 0
3 years ago
When Marco swim, the number of calories burned after time x, In minutes, is given by the equation
Cloud [144]
Answer : 4. 576


Y= 330 + 8.2(30)

330 +246

576




4 0
2 years ago
3x - y = 2<br> 3x - y = 3
expeople1 [14]

Answer:

there is no answer ( I mean this system of equations can't be solved)

Step-by-step explanation:

Because the x eliminates itself there will be no point.

6 0
3 years ago
There are six professors teaching the introductory discrete mathematics class at someuniversity. The same final exam is given by
musickatia [10]

Answer:

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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