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Westkost [7]
3 years ago
5

If f(x) = 2x2 + 1, what is f(x) when x = 3?

Mathematics
2 answers:
ikadub [295]3 years ago
8 0
f(x)=2x^2+1\\\\\text{substitute the value of x to the equation of the function}\\\\f(3)=2\cdot3^2+1=2\cdot9+1=18+1=19
Ghella [55]3 years ago
6 0

Answer:

The answer is 19

Step-by-step explanation:

You solve it like an regular equation

HOPE THIS HELPS

STAY SAFE:)

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Find the area of the triangle below.
Fiesta28 [93]

Answer:

36 ft

Step-by-step explanation:

7 0
3 years ago
Please need help on this
ser-zykov [4K]

Answer: In my answer I got 9 because the formula to find the area it would be A=1/2b*h



Step-by-step explanation: How would you do this?

Well we know that the base equals 6 we have heighth so we would have to do 1.5*6 and that would give us 9 but if we round it would be 10 because 9 is closer to 10 than it is to 0.


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4 0
3 years ago
What scale factor was used in going from the grey triangle to the yellow triangle?
Lena [83]

Answer:

2

Step-by-step explanation:

First, we need to find out the length of the third side of the triangle. (The right side of the Y-axis) We use the pythagorean theorem to find it. 4²+2² = 20 find the square root of 20 √20 = ~4.5 so with this in mind, lets find the length of the whole triangle. 8²+4²=80 then √80 = ~9 with this, we can say that since the length of one of the legs has increased by 2, and so has the length of the base, and also the length of the hypotenuse, the scale factor must be 2.

8 0
3 years ago
How many ways can first second and third place assigned
Papessa [141]

Answer:

i cannot help you get the answer to the question without more information but i can explain how to solve it, what your question is, is called a "permutation"

Step-by-step explanation:

To calculate permutations, use the equation nPr, where n is the total number of choices and r is the amount of items being selected. To solve this equation, use the equation nPr = n! / (n - r)!    , an exclimation point means the factorial, say we need the factorial of 4, we would do this 4x3x2x1 go left to right, and it is not all at once. you multiply 4 times 3 which equals 12, then multiply 12 times 2... so on and so forth

3 0
3 years ago
20 POINTS 20 POINTS. Will give Brainliest.
Simora [160]

Answer:

using y=mx+c

C=7

y=8

x= -4

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1= -4m

m= -1/4

8 0
3 years ago
Read 2 more answers
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