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g100num [7]
3 years ago
5

If f(x)=x-5, find x when f(x)=15

Mathematics
1 answer:
Leya [2.2K]3 years ago
5 0

Answer:

x = 20

Step-by-step explanation:

we are given the value of f(x), replace it in the first equation

15 = x - 5

solve for x by adding 5 on both sides

15 + 5 = x

20 = x or x = 20

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Step-by-step explanation:

x is at (0, 4)

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Find the product of the given complex number and its conjugate.<br> 1/5+4i
nasty-shy [4]

Answer:

-15.96

Step-by-step explanation:

A conjugate is a binomial with the sign inside changed. So the conjugate of (1/5 + 4i) is (1/5 - 4i)

Set the original and the conjugate next to each other and F.O.I.L. Multiply the first numbers of each binomial, the 1/5 and the 1/5 to get 1/25. This is the "F."

Multiply the outer members, the 1/5 and the 4i to get - 60i. This is the "O."

Multiply the inner  numbers  ( the + 4i and the 1/5) to get + 60i. This is the "I."

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The positive 60i and the negative 60i cancel each other out.

The i squared changes into - 1. This makes the 16 negative.

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4 0
3 years ago
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poizon [28]
10.5 -- 3/2=1.5 -- 7x1.5=10.5
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3 years ago
Which expression is equivalent to ( xy -6)2 for all values of x and y where the expression is defined?
hichkok12 [17]

Answer:

 ( x y -6)²  =  x² y² - 12 xy + 36            

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the expression ( x y -6)²

Apply formula (a-b)² = a² -2ab + b²

( x y -6)² = (xy)² - 2 × xy× 6 + (6)²

             = x² y² - 12 xy + 36

( x y -6)²  =  x² y² - 12 xy + 36            

4 0
3 years ago
Read 2 more answers
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Katarina [22]

Answer:

True

Step-by-step explanation:

0     .      0                0                     0

whole     Tenths      Hundredths    Thousandths

3 0
3 years ago
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