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andrey2020 [161]

3 years ago

11

Let f(x) = 9x - 2 and g(x) = -x + 3. Find f(g(x)). I think it's -9x-2

1 answer:

almond37 [142]3 years ago

8 0

$f(g(x))=9(-x+3)-2=-9x+27-2=-9x+25$

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A circle has a center of (5,-5) and goes through (6,-2). What is the radius?

Fittoniya [83]

Start with the equation of a circle whose center is at (h,k) and whose radius is r:

(x-h)^2 + (y-k)^2 = r^2

Substituting the given coordinates of the center:

(x-5)^2 + (y-[-5])^2 = r^2, or (x-5)^2 + (y+5)^2 = r^2

Substituding the given coordinates of a point (6,-2) on the circle:

(6-5)^2 + (-2+5)^2 = r^2

Simplifying:

1^2 + 3^2 = r^2, or 1 + 9 = r^2, or 10= r^2. Then r = sqrt(10).

6 0

3 years ago

What is the value of 5n-3 when n=5?

joja [24]

Answer:

22

Step-by-step explanation:

We are given the expression:—

$\displaystyle \large{5n-3}$

When n = 5, substitute/change n to 5:—

$\displaystyle \large{5(5)-3}$

Evaluate:—

$\displaystyle \large{25-3=\boxed{22}}$

__________________________________________________________

<u>Summary</u>

<u>Substitution</u>

Changing or replacing from a term to another terms/expression is called substitution.

Examples:—

If we are given the expression $\displaystyle \large{2y-1}$ and we want to find the value when y = 4, simply replace y-term to 4.

$\displaystyle \large{2(4)-1=8-1=\boxed{7}}$

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If you have any doubts regarding my answer/explanation, do not hesitate to ask in comment!

8 0

1 year ago

I need the missing termmmmm

zepelin [54]

Answer:

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Step-by-step explanation:

The missing term is in the box that signifies the multiplication of the term 2x and the term 3x:

2x * 3x = 6x^2

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2 years ago

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777dan777 [17]

The answer is OL
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2 years ago

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worty [1.4K]

Work:

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1.32 = 1.32 × w

1.32 ÷ 1.32 = 1

Answer:

1 inch = width

4 0

3 years ago

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