All categories

3 years ago

Can anyone help me with this math problem?

Mathematics

2 answers:

netineya [11]3 years ago

7 0

Answer:

f(-2) = 65

Step-by-step explanation:

What f(-2) means is that -2 will be substituted for the value of x, which will result in an output.

f(x) = 6(8-x) + 5

f(-2) = 6(8-(-2)) + 5

f(-2) = 6(8+2) + 5

f(-2) = 6(10) + 5

f(-2) = 60 + 5

f(-2) = 65

Therefore, when x=-2, y=65, which essentially means f(-2) = 65

Mekhanik [1.2K]3 years ago

7 0

A) the notion f(-2) means that x is (-2)
However f(x) is another way of saying y

b) f(-2)= 6(8 -(-2))+5
F(-2)= 6(8+2)+5
F(-2)=6(10)+5
F(-2)=60+5
F(-2)=65

Please mark as a brainliest (crown)

You might be interested in

Joyce saved $190 on an item that was 35 % off. What was the original price?

BabaBlast [244]

the answer is 66.50 ////////////////////////////////////////////////////////// dont count the dashs

5 0

3 years ago

24000000 in standard form

garik1379 [7]

24,000,000
2.4*10^7 Answer

8 0

4 years ago

11,017eight in decimal form

Burka [1]

Answer:

in scientific notation it is 1.1017 X 10 ^4

Step-by-step explanation

3 0

4 years ago

A student found the surface area of this pyramid. Surface area = (12)(6) + 1 2 (12)(8) + 1 2 (6)(9.5) = 72 + 48 + 28.5 = 148.5cm

Virty [35]

Answer:

The answer is, The student added only three of the five faces.

Step-by-step explanation:

Hoped it help Have a great day :)

5 0

3 years ago

Please help me with this!!!

Strike441 [17]

Answer:

See explanation below

Step-by-step explanation:

Let's use Q10 as an example and you will work on Q11-12 as they are the same.

I believe the middle column (5x-4) wants you to substitute the given x, so:

Q10.1: 5(-2)-4

Q10.2: 5(4)-4

Q10.3: 5(0)-4

Q10.4: 5(1)-4

The right most column (f(x)) should be asking you the answers from your middle column, so:

Q10.1: -14

Q10.2: 16

Q10.3: -4

Q10.4: 1

As for the domain and range, let's define these two names in case you haven't learnt them:

Domain: What reasonable x values can be inputted into the function.

Range: What reasonable results will be shown after calculating.

In these case, you can input any real numbers into x as you like into the function, the results will always be other real numbers.

Hence, for Q10-12, D and R should be "All real numbers"

Just some extra info, Let the function f(x) be $\frac{1}{x+1}$ . Since the denominator cannot be 0 in a fraction, we say that the domain of x is "All real numbers except -1" as $-1+1 = 0$ and $\frac{1}{0}$ is undefined.

7 0

3 years ago