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3 years ago

Estimated the difference 825 round subtract the rounded numbers 213 rounds to

Mathematics

1 answer:

boyakko [2]3 years ago

7 0

Answer:

600

Step-by-step explanation:

Given,

Numbers are 825 and 213.

If the number are equal or greater than 50 then one number will be rounded up. if the number is less then it will rounded down.

Like in this case 25 and 13 are less than 50 so, they will not rounded up.

825 will be rounded to 800.

213 will be rounded to 200.

Subtraction of number

= 800 - 200 = 600

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Solve the equation. 2/3 - 4x 7/2= -9x+ 5/6 step by step

Lostsunrise [7]

Answer: $\bold{x=\dfrac{11}{21}}$

<u>Step-by-step explanation:</u>

$\dfrac{2}{3}-\dfrac{4x+7}{2}=-9x+\dfrac{5}{6}\\\\(6)\dfrac{2}{3}-(6)\dfrac{4x+7}{2}=-9x(6)+(6)\dfrac{5}{6}\qquad \text{(multiplied by LCD) }\\\\4 - 12x-21=-54x+5\qquad \text{(simplified)}\\\\-12x - 17 = -54x + 5\qquad \text{(added like terms)}\\\\42x-17=5\qquad \text{(added 54x to both sides)}\\\\42x = 22\qquad \text{(added 17 to both sides)}\\\\x=\dfrac{22}{42}\qquad \text{(divided both sides by 42)}\\\\x=\dfrac{11}{21}\qquad \text{(reduced the fraction)}$

NOTE: The sign between 4x and 7 is missing in the question you posted. I assumed it was 4x + 7 in order to solve the equation.

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3 years ago

Read 2 more answers

A book store has twice as many history books as science books. The store has 81 history and science books altogether how many of

atroni [7]

let h= history books

science books = s

h=2s there are 2 times as many history as science so to get them equal we double the science

h+s=81 there are 81 total history and science books

2s+s=81 substitute 2s for h in the above equation

3s = 81 combine like terms

s = 27

There are 27 science books

h=2s

h=2(27)

h=54

there are 54 history books

4 0

3 years ago

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Burka [1]

So, and, but, but, or, nor, so. Im pretty sure this is correct.

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3 years ago

Central and inscribed angle practice

Gelneren [198K]

Answer:

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Step-by-step explanation:

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3 years ago

find the width of a rectangular prism if the volume is 165,000 mm3 the length is 100mm and the height is 55 mm

zepelin [54]

Answer:

Width is 30mm

Step-by-step explanation:

Volume = L×W×H

Volume= 165,000 mm³

Length= 100mm

Height= 55mm

Width= ?

L×H

100mm×55mm= 5500mm

volume ÷ L×W

165,000÷5500=30

width= 30mm

L×W×H=V

100×55×30=165000

7 0

2 years ago