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NISA [10]
3 years ago
15

Using property find a.3/5×-2/7+4/5-3/10×2/7​

Mathematics
1 answer:
Sedaia [141]3 years ago
5 0

Here the answer is 19/35

Step-by-step explanation:

\frac{3}{5} X\frac{-2}{7} +\frac{4}{5}-\frac{3}{10} X\frac{2}{7}

We will apply BODMAS rule

In this rule multiplication comes before add and subtraction

= \frac{-6}{35} + \frac{4}{5} - \frac{3}{35}

= \frac{4}{5} - ( \frac{6}{35}+ \frac{3}{35})

= \frac{4}{5} -  \frac{9}{35}

= \frac{4 X 7}{5 X 7} -\frac{9}{35}

= \frac{28}{35} - \frac{9}{35}

= \frac{19}{35}

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2 years ago
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4 0
3 years ago
jerry has 60 coins consisting of quarters and dimes. The coins combined value is $9.45. Find out how are quarters and how many a
jekas [21]
Eq. 1 .10x + .25y = 9.45
Eq. 2 x + y = 60 rewrite as x = 60 - y and substitute into equation 1.

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7 0
3 years ago
Round 18.57631 to three decimal places.
iVinArrow [24]

❄ Hi there,

let us revise the rounding rules and then, get down to rounding the number.

\sf{Rounding \ Rules:}

  • If the number you need to round is followed by a number from 0 to 4, you round down.
  • If the number you need to round is followed by a number that's 5 or more, you round up.

Now we can start the rounding process.

Reading the problem & the directions, we notice that we need to round to 3 decimal places (3 numbers after the decimal point).

Looking at the fourth number, we notice that it's less than 5.

∴ we need to round down ↡

↬\sf{18.57631 \ rounded \ to \ 3 \ DP \ = \bf{18.576}}

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

❄

3 0
2 years ago
Please Help here, i really need this joe
NNADVOKAT [17]

Answer:

The first answer choice, 4632.5

Step-by-step explanation:

At the rate of 85 feet per hour, after 5.5 hours the apprentice would have covered 467.5 square feet. Subtracting this from the total amount of 5,100 square feet, you get 4632.5, or the first answer choice. Hope this helps!

5 0
3 years ago
Read 2 more answers
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