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dezoksy [38]
2 years ago
8

Pls explain step by step and pls yell by are adding dividing multiplying etc

Mathematics
1 answer:
ikadub [295]2 years ago
5 0

Answer:

Can you show the whole question

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A student bought 34 pencils for school.if he sharpened 16 of the pencils before school whats is his ratio of unsharpened pencils
Sergio [31]


he bought 34 pencils which I suppose aren't already sharpened

so if he sharpens 16 of them just subtract 16 from 34 (34-16) which equals 18

so the ratio would be 16:18

but if u need to simplify it would be 8:9

3 0
3 years ago
How to identify reasonable domain and range​
puteri [66]

Answer:

The domain is the input values on the x-axis and range is input values on the y-axis

Step-by-step explanation:

Basically, domain is the horizontal values and range is the vertical ones.

6 0
3 years ago
What is the answer 5•(14+6)+4
Gala2k [10]
PEMDAS
add 14 to 6
5*(20)+4
multiply
100+4
104
5 0
3 years ago
Read 2 more answers
Which is a valid proportion? 3 over 4 = 21 over 28
dangina [55]

Answer: I think that it is the first one

5 0
3 years ago
The radius of a sphere is increasing at a rate of 4 mm/s. How fast is the volume increasing (in mm^3/s) when the diameter is 60
nexus9112 [7]

Answer:

The volume is increasing at a rate of 1508 cubic millimeters per second when the diameter is 60 mm.

Step-by-step explanation:

Volume of a sphere:

The volume of a sphere is given by the following equation:

V = \frac{4\pi r^3}{3}

In which r is the radius.

Implicit derivatives:

This question is solving by implicit derivatives. We derivate V and r, implicitly as function of t. So

\frac{dV}{dt} = 4\pi r^2 \frac{dr}{dt}

The radius of a sphere is increasing at a rate of 4 mm/s.

This means that \frac{dr}{dt} = 4

How fast is the volume increasing (in mm^3/s) when the diameter is 60 mm?

This is \frac{dV}{dt} when r = \frac{d}{2} = \frac{60}{2} = 30. So

\frac{dV}{dt} = 4\pi r^2 \frac{dr}{dt}

\frac{dV}{dt} = 4\pi*(30)^2*4

\frac{dV}{dt} = 1508

The volume is increasing at a rate of 1508 cubic millimeters per second when the diameter is 60 mm.

7 0
3 years ago
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