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3 years ago

If f(x) = x2 + 7, what is the value of f(3)? A) 2 Eliminate B) 12 C) 13 D) 16 E) 17

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

8 0

Answer:

Step-by-step explanation:

To evaluate f(3) substitute x = 3 into f(x), that is

f(3) = 3² + 7 = 9 + 7 = 16 → D

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Which value of n makes the value of the expression 4n + 3 a composite number

JulijaS [17]

Answer:

Step-by-step explanation:

Given expression :-

4n + 3

It will be composite if it will has more than 2 factors ( other than 1 and itself )

If n = 1 :-

4*1 + 3
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If n = 2 :-

4*2 + 3
8 + 3
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4*3+3
12+3
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2 years ago

A farmer needs to build a goat pen. The pen will be 10 yards wide and 19 yards long. The fencing material costs $0.57 per yard.

scoundrel [369]

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Step-by-step explanation:

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3 years ago

17 If x-2 is a factor of x- bx + b, where b is a constant, what is the value of b ?

aliya0001 [1]

Answer: $b=4$

Step-by-step explanation:

<h3> The complete exercise is: "If $x-2$ is a factor of $x^2 - bx + b$ , where b is a constant, what is the value of b?"</h3><h3 />

You know that a factor of the given polynomial $x^2 - bx + b$ is:

$x-2$

Then, in order to find the value of "b", which is a constant of the polynomial, you need to follow these steps:

1. You must rewrite the polynomial as:

$P(x)=x^2 - bx + b$

2. Now you must substitute $x=2$ into the polynomial:

$P(2)=(2)^2- b(2)+ b$

3. Since 2 is a zero of the polynomial, you can substitute $P(2)=0$ :

$0=(2)^2- b(2)+ b$

4. Finally, you must solve for the constant "b" to find its value. Then, this is:

$0=(2)^2- b(2)+ b\\\\0=4-2b+b\\\\-4=-b\\\\b=4$

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3 years ago

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The line passes through two points that have the same x-coordinate.
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3 years ago

Make a ten to find 8+4

Gnom [1K]

The answer is 12 because you got to add

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3 years ago

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