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3 years ago

Why is mental addition and subtraction important when you learn more difficult concept

Mathematics

2 answers:

Alex Ar [27]3 years ago

7 0

It is important so you can be more fluent or faster in knowing bigger problems

seraphim [82]3 years ago

6 0

It is important because addition is the opposing method of multiplication and subtraction is the opposing method to division. And you need to fluent and fast when it comes to real life!

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Solve for x 4.72 = 3.25 + x

Anna [14]

Flip the situation:
X + 3.25 = 4.72

Subtract 3.25 from both sides
X + 3.25 - 3.25 = 4.72 - 3.25

X = 1.47

3 0

3 years ago

Pleeeeeeeeaaaseeeeee help meeeeeeee!!!!!!!!!

zaharov [31]

Answer:

Option D.

$A =96\pi\ cm^2$

Step-by-step explanation:

The area of the circular bases is:

$A_c = 2\pi(a) ^ 2$

Where

$a=4\ cm$ is the radius of the circle

Then

$A = 2\pi(4) ^ 2$

$A = 32\pi\ cm^2$

The area of the rectangle is:

$A_r=b * 2\pi r$

Where

$b=8\ cm$

b is the width of the rectangle and $2\pi r$ is the length

Then the area of the rectangle is:

$A_r=8 * 2\pi (4)$

$A_r=64\pi\ cm^2$

Finally the total area is:

$A = A_c + A_r\\\\A = 32\pi\ cm^2 + 64\pi\ cm^2\\\\$

$A =96\pi\ cm^2$

7 0

4 years ago

Read 2 more answers

A rectangular field is two times as long as it is wide. If the perimeter of the field is 600ft, what are the dimensions of the f

xxMikexx [17]

Answer:Should be 200 ft, 100 ft, 200 ft, and 100 ft

Step-by-step explanation:

6 0

3 years ago

Meredith works at a blood bank. She needs to write a report of the ratio of type-A blood donated to type-O blood donated, but sh

kari74 [83]

Answer:

uh,

Step-by-step explanation:

42-55=7 7+25=32

32:55

i am sorry if this doesn't help!~

6 0

2 years ago

Ok her it is need help

Furkat [3]

Answer:

..........

Step-by-step explanation:

5 0

3 years ago