3 years ago

Is -2/5 irrational or rational and why???

Mathematics

1 answer:

Levart [38]3 years ago

4 0

Answer:

Rational

Step-by-step explanation:

A rational number is a number expressed as a fraction. So the number could be a decimal or percent.

Hope This Helps :)

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3 wouldn’t belong because they all have solutions except for that one

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A piecewise function f(x) is defined as shown. f(x) = StartLayout enlarged left-brace 1st Row 1st column negative five-fourths x

vivado [14]

Answer:

(D)The first column is labeled x with entries 40, 160, 200. The second column is labeled y with entries 60, 15, 0.

Step-by-step explanation:

The piece-wise function, f(x) is defined as follows:

$f(x)=\left\{\begin{array}{ccc}-\frac{5}{4}x+90 &0\leq x$

$f(0)=-\frac{5}{4}*0+90=90\\\\f(16)=-\frac{5}{4}*16+90=70\\\\f(40)=-\frac{3}{8}*40+75=60\\\\f(120)=-\frac{3}{8}*120+75=30\\\\f(160)=-\frac{3}{8}*160+75=15\\\\f(200)=-\frac{3}{8}*200+75=0$

Therefore, the table which could represent the function is that which satisfies the points above.

In option D

$\left|\begin{array}{c|c}x&f(x)\\--&--\\40&60\\160&15\\200&0\end{array}\right|$

<u>The correct option is D</u>

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3 years ago

37/50 of a number is what percentage of that number

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Answer:

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Step-by-step explanation:

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