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2 years ago

Write the number in different ways

Mathematics

1 answer:

mina [271]2 years ago

3 0

4. 15 tens, 1 hundred, 5 tens
150
5. 18 tens, 1 hundred, 8 tens
180

note: I hope this helps. I haven't done this in a long time. Sorry X(

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Without graphing, tell whether the line containing (4, 2) and (4, 9) is horizontal, vertical, or neither.

telo118 [61]

Answer:

Vertical.

Step-by-step explanation:

It is vertical because 4 + 4 (adding both X-axis, totalling 8) is smaller than 9 + 2 (adding both Y-axis, totalling 11), so the Y-axis, which is vertical, is bigger.

4 0

2 years ago

84% 84, percent of astrid's books are fiction. What fraction of astrid's books are fiction?

yuradex [85]

Let number of books by astrid's = x

Out of x , 84% are fiction.

So, Number of non fictional books = x - $\frac{84x}{100}$

= $\frac{100x- 84 x}{100} = \frac{16x}{100}$

→Ratio of number of books to fictional books

$=\frac{x}{\frac{84x}{100}}\\ = \frac{100}{84}\\= \frac{25}{21}$ ⇒[Dividing numerator and denominator by 4.]

→Out of 25 books by astrid 21 are fictional.

→ Number of fictional books by astrid = $\frac{21}{25}$

7 0

2 years ago

Read 2 more answers

Math problem I need help giving brainly! Super easy

Alborosie

Answer:

answer is -3

Step-by-step explanation:

one solution

6 0

2 years ago

What is the value of the expression if m = –5 and n = 3? Negative StartFraction 24 Over 25 EndFraction Negative StartFraction 4

KatRina [158]

You can use the fact that a number raised to negative powers can be written as 1 divided by that number raised to positive number.

The value of the given expression when m = -5 and n= 3 is $-\dfrac{2}{5}$

<h3>How can we rewrite a number raised to negative power?</h3>

Suppose we've got $a^{-b}$ . then it can be rewritten as

$a^{-b} = \dfrac{1}{a^b}$

It is because $a^0 = 1$ for any a except 0, and that $\dfrac{a^0}{a^b} = a^{0-b} = a^{-b}$

If base are same and there is multiplication, then there will be addition in power.

Also, know the fact that if base are same and there is division, there will be subtraction in power(subtracting since that denominator when goes up, its power gets negated(gets negative sign to the existing power)

Thus,

$a^b \timesa ^c = a^{b+c}\\\\\dfrac{a^b}{a^c} = a^{b-c}$

<h3>Using above method to simplify the given expression before evaluating</h3>

The given expression is $\dfrac{2m^{-1}n^5}{3m^0n^4} = \dfrac{2n^5}{3m^0m^1n^4} = \dfrac{2n^5}{3mn^4} = \dfrac{2n^{5-4}}{3m} = \dfrac{2n^1}{3m} = \dfrac{2n}{3m}$