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3 years ago

If f(x)=7x what is the inverse of f(x)

Mathematics

1 answer:

Brums [2.3K]3 years ago

8 0

Answer:

f(x)=x/7

Step-by-step explanation:

f(x)=7x

y=7x

x=7y (switch y and x for inverse)

x=7y (isolate y)

x/7=y

The inverse of f(x)=7x is f(x)=x/7

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Describe the correlation between the amount spent and the number of people spending the money.

shepuryov [24]

Answer:

B. Negative correlation; as the amount spent increases, the number of people spending that amount increases

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3 years ago

Find the measure of the indicated angle

Gwar [14]

Answer:

X = 88 degrees

Step-by-step explanation:

Because its an isosceles triangle the two top angles are 46.

46 + 46 = 98

then you take the degree of the triangle 180 and subtract 98 from it to get 88 degrees

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3 years ago

What is the slope of the line through (-1, 4) and (1, -2)? A. 1/3 B. 3 C. -3 D. 3

vazorg [7]

Answer:

Step-by-step explanation:

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(-2-4)/1-(-1)

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3 years ago

hello! So the people in Indian server were bad(as they would not answer and instead spam) so I switched servers and I hope you a

Art [367]

Answer:

$\displaystyle E=26log2-24log3+8log 5$

Step-by-step explanation:

Logarithms

There are certain properties of the logarithms we'll need to recall in order to simplify the expression given in the question. We'll list them below

$log(x.y)=logx+logy\\log(x/y)=logx-logy\\logx^y=y.logx$

We'll also need to factor the following numbers into their prime factors:

$20=2^2\cdot 5$

$16=2^4$

$15=3\cdot 5$

$25=5^2$

$24=2^3\cdot 3$

$81=3^4$

$80=2^4\cdot 5$

The original expression is

$\displaystyle E=log20+16log\frac{16}{15}+12log\frac{25}{24}+log\frac{81}{80}$

Plugging in the factored values

$\displaystyle E=log(2^2\cdot 5)+16log\frac{2^4}{3\cdot 5}+12log\frac{5^2}{2^3\cdot 3}+log\frac{3^4}{2^4\cdot 5}$

Applying the properties we have

$\displaystyle E=log2^2+log 5+16(log2^4-log3-log 5)+12(log5^2-log2^3-log 3)+log3^4-log2^4-log 5$

$\displaystyle E=2log2+log 5+16log2^4-16log3-16log 5+12log5^2-12log2^3-12log 3+log3^4-log2^4-log 5$

$\displaystyle E=2log2+log 5+64log2-16log3-16log 5+24log5-36log2-12log 3+4log3-4log2-log 5$

Simplifying

$\boxed{\displaystyle E=26log2-24log3+8log 5}$

7 0

4 years ago

Mr Binnix wife is older than her sister by 2 years if their ages add up to 52 how old is each sister? Let c represent Leigh Ann’

Mazyrski [523]

Answer:

the older sister is 27 and the younger is 25.

Step-by-step explanation:

C+2=Y

C+Y=52

2C+2=52

2C=50

C=25

25+2=Y

Y=27

5 0

3 years ago