3 years ago

Before dividing, decompose 420 to make it easier to divide by 4.

Mathematics

1 answer:

den301095 [7]3 years ago

3 0

Answer:

4/420=105

Step-by-step explanation:

decompose 42 and divide by 4 is 10 and is 20 divided by 4 is 5

You might be interested in

a helicopter is flying at 150mph on a course with a bearing of 130°. If the helicopter experiences a crosswind blowing southeast

romanna [79]

150-25=125mph

130-25=105

This means it was going 125mph and that it dropped an altitude of 25 degrees because of the wind and the slow down of the helicopter

3 0

4 years ago

While mining, Jason found a large metal bar that weighed 24 ounces. Jason was also able to determine that the bar had 6 ounces o

tino4ka555 [31]

25% 6 divided by 24 will give you the percentage of copper in the bar

5 0

3 years ago

A jar contains 37 marbles of which 13 marbles are blue 10 red and rest are green. what is the ratio of green marbles to red marb

jeka94

37=blue+red+green
37-red-blue=green
37-13=10=green
14=green

green:red=
14:10=
7:5

5 0

3 years ago

Read 2 more answers

PLEASE HELP!! Calculate the slope of the line passing through the following two points: write your slope as a reduced improper f

Alekssandra [29.7K]

Answer:

Step-by-step explanation:

slope formula:

$\frac{y_2-y_1}{x_2-x_1}\\\\=\frac{3-(-18)}{2-(-19)}\\=\frac{21}{21}=1$

6 0

3 years ago

Read 2 more answers

When the area in square units of an expanding circle is increasing twice as fast as its radius in linear units

alexira [117]

Answer:

r=1/π

Step-by-step explanation:

Area of the circle is defined as:

Area = πr²

Derivating both sides

$\frac{dA}{dr}$ =2πr

$\frac{dA}{dt}$ = $\frac{dA}{dr}$ x $\frac{dr}{dt}$ = 2πr $\frac{dr}{dt}$

If area of an expanding circle is increasing twice as fast as its radius in linear units. then we have : $\frac{dA}{dt}$ =2 $\frac{dr}{dt}$

Therefore,

2πr $\frac{dr}{dt}$ = 2 $\frac{dr}{dt}$

r=1/π

5 0

3 years ago

Read 2 more answers