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kykrilka [37]
3 years ago
5

If f(x) = x2 + 4, find f(3)

Mathematics
2 answers:
ELEN [110]3 years ago
7 0

Answer:

c. 13

Explanation:

f(x) = x² + 4

f(3) = (3)² + 4

= 9 + 4

= 13

Rom4ik [11]3 years ago
3 0
F(3) represents the x in the equation. If our x is 3 then 3^2+4=13. C.13 must be the answer.
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I got number 7 wrong can someone help me with the answer and the work
Amiraneli [1.4K]
To figure out this problem break it down into steps.

We know that there are 1 - 25 or 25 cards in total, one card is taken out and not replaced so now there are only 24 cards.

25 - 1 = 24.

Find the probability of getting one number greater than 10, this would be all numbers from 10 - 25, which are 25 - 10 = 15 options to choose that will give you a value greater than 10.

Probability = 15/24 = 5/8.

For 2 cards simply multiply the probability by itself to get 2 cards where the number is greater than 10.

5/8 • 5/8 = 25/64.

The probability of getting 2 cards that are greater than 10, are 25/64.

This is the solution.







4 0
3 years ago
The side lengths of a triangle are given by the expressions 5x + 3, 5x – 5, and 3x – 2. Write and simplify a linear
rewona [7]

Answer:

The perimeter is P=13x-4

Step-by-step explanation:

The perimeter of a triangle is the distance around its edges.

The given triangle has side lengths 5x + 3, 5x – 5, and 3x – 2.

The perimeter is : P=(5x+3)+(5x-5)+(3x-2)

Group similar terms to get:

P=5x+5x+3x+3-5-2

Combine the similar terms to get: P=13x-4

Hence the perimeter in terms of x is P=13x-4

5 0
4 years ago
Which expression is equivalent to -36 – 8?
Ber [7]
Answer is B I got it right on the test :)

8 0
3 years ago
Read 2 more answers
A bunch of families are going to watch in the theater. There are 20 people in total. An adult ticket costs $10 and a child ticke
tresset_1 [31]
This Answer Could Be Several Answers Because Of The Prices But From Looking And Doing Some Math. My Answer Would Be 3 Adults & 6 Children.

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8 0
3 years ago
Find the value of cos theta for the angle shown.
patriot [66]

Answer:

Step-by-step explanation:

X = 4,0

hypotenuse = sqrt(4^2  + (-sqrt(33))^2 )

hypotenuse = sqrt(16 + 33)

hypotenuse = sqrt(49)

hypotenuse = 7

Cos(theta) =  4/ 7

The cos looks like it should be negative, but it is positive in quad 4.

3 0
4 years ago
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