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kondor19780726 [428]
3 years ago
5

How is 2 ones the same as 20 tenths?

Mathematics
2 answers:
kodGreya [7K]3 years ago
8 0

Think of it as currency, for example

2 ones = 2 of $1 = $2 total tenths of dollar = 10 Cents then

20 x 10 Cents = 200 Cents = $2

so they are the same.


As is 200 hundredths, and so on

yan [13]3 years ago
7 0

It's because a tenth means that you've divided it by 10. So if it's 20, it means you're multiplying tenths by 20, leaving you with 2 wholes.

For example, you have 2 cakes and you cut each into 10 slices, the slices are each one tenth of the whole cake, and in total there are 20 tenths.

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Write and equati9n of a l8ne that passes through (1,-2) and is perpendicular to -4x+7y=21
yarga [219]

Given:

A line passes through (1,-2) and is perpendicular to -4x+7y=21.

To find:

The equation of that line.

Solution:

We have, equation of perpendicular line.

-4x+7y=21

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m_1=\dfrac{4}{7}

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