2 years ago

Given the function f(x) = 5x^2 - x + 20, find f(3) A) -20 B)-13 C) 62 D) 64

Mathematics

2 answers:

omeli [17]2 years ago

7 0

Given function is f(x)= 5x^2-x+20

f(3) , substitute 3 in place of x

=> f(3)=5(3)^2-3+20

=>f(3)= 45-3+20

=>f(3) = 62

Viktor [21]2 years ago

4 0

<h3>Answer: 62 (choice C)</h3>

Work Shown:

f(x) = 5x^2 - x + 20

f(3) = 5(3)^2 - 3 + 20

f(3) = 5(9) - 3 + 20

f(3) = 45 - 3 + 20

f(3) = 42 + 20

f(3) = 62

You might be interested in

Can someone help me with this?! Its Math Ill give you 20 Points Thank you

Anna35 [415]

Answer:

Look below

Step-by-step explanation:

1- translation

2- Reflection

3- Rotation

4- Rotation

8 0

3 years ago

Read 2 more answers

Length = 7.5 Width = 5 Height = 1 Surface Area = 100 inches squared Shape = rectangular prism or box What is the surface area of

liberstina [14]

Step-by-step explanation:

hete is your formula this u can find answer

4 0

3 years ago

Triangle J K L is shown. Angle J L K is 105 degrees. The length of J K is 4.7 and the length of J L is 2.7.

cluponka [151]

Answer:

The approximate measure of angle K is 34°

Step-by-step explanation:

In ΔJKL

∠L = 105°

JK = 4.7

JL = 2.7

Sine Rule:

$\frac{SinA}{a} = \frac{SinB}{b}= \frac{SinC}{c}$

So, $\frac{SinL}{JK} = \frac{SinK}{JL}\\\frac{SinL}{4.7} = \frac{SinK}{2.7}\\\frac{Sin 105}{4.7} = \frac{SinK}{2.7}\\\frac{Sin 105 \times 2.7}{4.7} = SinK\\\frac{(0.9659 \times 2.7)}{4.7} = Sin K\\\frac{2.60793}{4.7} = Sin K\\0.5549 = Sin K\\Sin^{-1}(0.5549)= K\\K = 33.70$