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3 years ago

Find 3/7 of 21? Can you find this answer because my homework I do not know how to do so can you please find this question.

Mathematics

2 answers:

ira [324]3 years ago

6 0

Answer:

Step-by-step explanation:

const2013 [10]3 years ago

5 0

Answer:

Step-by-step explanation:

3/7 multiplied by 21 = 3/7 x 21 = 9 = 3/7 x 21/1 = 63/7 = 9

Or if you can't do the math - Think of a pizza with 21 slices . Now cut this pizza into 7 equal parts. You will find that each part contains exactly 3 slices. Now, eat 3 of these parts. With three slices in each part, you ate 9 slices - which is three sevenths of 21.

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3 years ago

Kailey and Macy paddle a canoe at a rate of 6 miles per hour in still water. They travel downstream for 10 miles, and to their d

aliya0001 [1]

Answer:3.79

Step-by-step by awnser:

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3 years ago

Kevin is 3 years older than Daniel. Two years ago, Kevin was 4 times as old as Daniel.

goldfiish [28.3K]

Answer:

B is the correct answer

Kevin is K

Daniel is D

Now: K

K = D + 3

3 years ago:

K - 2 = 4(d - 2)

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6 0

3 years ago

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This person did something wrong and I do not know what it is :( Please help this is for points!

Arlecino [84]

Answer:

0.4 cm

Step-by-step explanation:

The magnifying glass basically zooms into smaller objects. If the insect appears to be 2cm, then it is actually smaller than this. It cannot be 10 cm.

If the scale factor is 5, then this means that the insect is zoomed in 5 times through the magnifying glass. Use the following ratio:

$\frac{2}{5}$

This fraction can also be seen as division, so:

$2$ ÷ $5=0.4$

The insect is actually 0.4 cm long.

(or 4 millimeters)

:Done

5 0

3 years ago

A particle moves along the x-axis with velocity v(t) = t2 - 1, with t measured in seconds and v(t) measured in feet per second.

Kisachek [45]

Answer:

0.667 feet

Step-by-step explanation:

To get the total distance travelled, we would integrate the velocity v(t) equation with respect to time t.

Given that the particle moves from t = 0 to t = 2 seconds

Integrating v(t) = t2 - 1

we get

= t^3/3 - t

substituting the boundaries from t = 0 to t = 2 seconds, we get

= 2^3/3 - 2 - (0^3/3 - 0)

= 8/3 - 2 - 0

= 0.667 feet

8 0

3 years ago

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