3 years ago

If f(x) = 2х2 +1, what is f(x) when x = 3? оооо 19

Mathematics

1 answer:

jeka57 [31]3 years ago

7 0

Answer:

f(3) = 19

Step-by-step explanation:

Step 1: Define

f(x) = 2x² + 1

x = 3

Step 2: Substitute and Evaluate

f(3) = 2(3)² + 1

f(3) = 2(9) + 1

f(3) = 18 + 1

f(3) = 19

You might be interested in

Find the value of x in each case. Give reasons to justify your solutions!

velikii [3]

Answer:

x = 27

Step-by-step explanation:

Since AC and DE are parallel lines, then

∠ BAD = ∠ EDF= 2x ( corresponding angles )

The sum of the 3 angles in Δ BAD = 180°, thus

2x + 2x + 72 = 180, that is

4x + 72 = 180 ( subtract 72 from both sides )

4x = 108 ( divide both sides by 4 )

x = 27

7 0

3 years ago

Read 2 more answers

Select all the options that have the same value as 3 1/2% of 20?

r-ruslan [8.4K]

Solution:

As, we have to find , $3 \frac{1}{2} of 20=\frac{7}{2}$ % of 20

$= \frac{7}{2\times 100}\times 20\\\\ = \frac{7}{10} \\\\ =0.70$

If we have to Percent of a certain number it means , divide that number by 100 , for example x% means $\frac{x}{100}$ .

And if i am writing , x% of y it means , $\frac{xy}{100}$ .

8 0

3 years ago

In a scale used for a blueprint,

Maslowich

Answer:

40 inches

Step-by-step explanation:

4inches/2 = 2 yards

20 yards x 2 = 40 inches

4 0

3 years ago

Eric returned from a trip with 300 which is 50% more money than he had at the beginning of his trip how much money did Eric have

solong [7]

he had 150.

Step-by-step explanation:

i cant explain

6 0

3 years ago

How do you write 570,020 in word form

Over [174]

Five hundred -&- seventy thousand -&- twenty dollars

8 0

4 years ago