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2 years ago

Is the negative square root 400 rational or irrational

Mathematics

2 answers:

Aleks [24]2 years ago

8 0

Answer:

Step-by-step explanation:

Rational

astraxan [27]2 years ago

6 0

Answer:

Rational

Step-by-step explanation:

20 x 20 is 400 so 20 is a rational number

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If h(x)=(fog)(x) and h(x)=³√x+3, find g(x) if f(x) =³√x+2

ipn [44]

Answer:

$g(x)=x+1$

The problem:

Find $g(x)$ if $h(x)=(f \circ g)(x)$ ,

$h(x)=\sqrt[3]{x+3}$ , and

$f(x)=\sqrt[3]{x+2}$ .

Step-by-step explanation:

$h(x)=(f \circ g)(x)$

$h(x)=f(g(x))$

Replace $x$ in $f(x)=\sqrt[3]{x+2}$ with $g(x)$ since we are asked to find $f(g(x))$ :

$\sqrt[3]{x+3}=\sqrt[3]{g(x)+2}$

$\sqrt[3]{x+1+2}=\sqrt[3]{g(x)+2}$

This implies that $x+1=g(x)$

Let's check:

$(f \circ g)(x)$

$f(g(x))$

$f(x+1)$

$\sqrt[3]{(x+1)+2}$

$\sqrt[3]{x+1+2}$

$\sqrt[3]{x+3}$ which is the required result for $h(x)$ .

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3 years ago

Nora paid 36$ for 6 books. if each book cost the same amount, how much was each book?

Fofino [41]

Answer:$6

Step-by-step explanation:Divide 36 by 6

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3 years ago

9. A boy rides away from home in an automobile at the rate of 28 miles an hour and walks back at the rate of 4 miles an hour. Th

muminat

Answer:

9. A loebskesşbxksjlejs

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3 years ago

Jim drove 175 miles in 3 hrs 30 mins.How many miles per hour did Jim drive?

exis [7]

Jim drove 50 miles per hour

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4 years ago

A study studied the birth weights of 1,278 babies born in the united states. the mean weight was 3234 grams with a standard devi

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<span>1220 Subtracting the lower boundary of 1492 grams from the mean of 3234 gives you 1742 grams below the mean. Dividing 1742 by the standard deviation of 871 gives you 2 standard deviations below the curve. Now doing the same with the upper limit of 4976 grams also gives you 2 standard deviations above the mean (4976-3234)/871 = 2 So you now look for what percentage of the population lies within 2 standard deviations of the mean. Standard lookup tables will indicate that 95.4499736% of the population will be within 2Ď of the mean. So multiply 1278 by 0.954499736 giving 1219.851. Then round to the nearest whole number and you have an estimated 1220 babies that weigh between 1492 grams and 4976 grams.</span>

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3 years ago

Read 2 more answers