3 years ago

15 is 37.5 of what number

Mathematics

1 answer:

GrogVix [38]3 years ago

5 0

Answer:

Step-by-step explanation:

15 / 37.5% = 40

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f(x)= 1 / x-3 g(x)= 3x + 1/x A. Use composition to prove whether or not the functions are inverses of each other. B. Express the

Alisiya [41]

Step-by-step explanation:

(A) To find inverse of f(x) = y = 1 / x - 3 :

Transform in terms of x

y = 1 / x - 3

x - 3 = 1 / y

x = 3 + 1 / y

Exchange x with y :

${f}^{ - 1} (x) = 3 + \frac{1}{x}$

Therefore, g(x) is not inverse of f(x) and vice versa.

(B)

Domain of f(x) = R - {3}

Domain of g(x) = R - {0}

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3 years ago

I will mark brainliest and give 30 points

zhuklara [117]

Its B, The answer for your question is B

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3 years ago

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A car averages 30 miles of driving for 1 gallon of gas if the car holds 12 gallons how many times will we have to fill up his ga

icang [17]

Answer:

7 times

Step-by-step explanation:

30 miles per 1 gallon

Car holds 12 gallons

30x12=360

2520/360=7

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4 years ago

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About 12% of individuals write with their left hands. If a class of 130 students meets in a classroom with 130 individual desks,

Lynna [10]

Answer:

0.1019

Step-by-step explanation:

Probability, p=12%=0.12

Sample size, n=130 students

Those writing with left=14 students

Using the formula for binomial distribution

P(X≤x)= $\left[\begin{array}{}n\\x\end{array}\right]p^{x}(1-p)^{n-x}$

Substituting 0.12 for p, 130 for n, 14 for x we obtain

P(X≤x)= $\left[\begin{array}{}130\\14\end{array}\right]0.12^{14}(1-0.12)^{130-14}$

P(X≤x)= $130C14*0.12^{14}(0.88)^{116}$

P(X≤x)=0.1019

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3 years ago

Whats the answer and show work -7x-2=24-9x

sladkih [1.3K]

Answer:

x=11 there is my work. Your welcome

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4 years ago

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