1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
torisob [31]
3 years ago
8

If f(x)=3x^2+15, what is the value of f(4).

Mathematics
2 answers:
nignag [31]3 years ago
7 0

f(4) = 3×4^2+15

4^2=16

3×16

48+15

63

f(4)=63

postnew [5]3 years ago
7 0

Answer:

Step-by-step explanation: f(4)=3x^2+15

3(4)^2+15

3*16+15

3*16=48

48+15=63

f(4)=63

You might be interested in
In the △ABC, the height AN = 24 in, BN = 18 in, AC = 40 in. Find AB and BC. Consider all possible cases. Case 1 : N∈BC, AB = __,
aivan3 [116]

Answer:

Case 1:

AB = 30

BC = 50

Case 2:

AB = 15.9

BC = 36.7

Case 3: Not possible

Step-by-step explanation:

Given

See attachment for illustration of each case

Required

Find AB and BC

Case 1:

Using Pythagoras theorem in ANB, we have:

AB^2 = AN^2 + BN^2

This gives:

AB^2 = 24^2 + 18^2

AB^2 = 576 + 324

AB^2 = 900

Take square roots of both sides

AB = \sqrt{900

AB = 30

To calculate BC, we consider ANC, where:

AC^2 = AN^2 + NC^2

40^2 = 24^2 + NC^2

1600 = 576 + NC^2

Collect like terms

NC^2 = 1600 - 576

NC^2 = 1024

Take square roots

NC = \sqrt{1024

NC = 32

So:

BC = NC + BN

BC = 32 + 18

BC = 50

Case 2:

Using Pythagoras theorem in ANB, we have:

AN^2 = AB^2 + BN^2

This gives:

24^2 = AB^2 + 18^2

576 = AB^2 + 324

Collect like terms

AB^2 = 576 - 324

AB^2 = 252

Take square roots of both sides

AB = \sqrt{252

AB = 15.9

To calculate BC, we consider ABC, where:

AC^2 = AB^2 + BC^2

40^2 = 252 + BC^2

1600 = 252 + BC^2

Collect like terms

BC^2 = 1600 - 252

BC^2 = 1348

Take square roots

BC = \sqrt{1348

BC = 36.7

Case 3:

This is not possible because in ANC

The hypotenuse AN (24) is less than AC (40)

3 0
2 years ago
Julius is going to have a multi-course meal. The following table shows how many different dishes are
AnnyKZ [126]

Answer:

36

Step-by-step explanation:

If its the khan question 3x4x3

6 0
3 years ago
Las fracciones que tienen denominador 10, 100, 1000, etc las llamamos fracciones decimales y a su vez las podemos escribir como
Sindrei [870]

Answer:

las fracciones decimales son:

21/10 = 2,1

439/100 = 4,39

34/10 = 3,4

35/1000 = 0,035

851 / 1000 = 0,851

Step-by-step explanation:

Toda fraccion cuyo denominador (el numero de abajo) es multiplo de 10 es considerada una fraccion decimal. No importa si el numerador es mayor al denominador. Justamente el sistema decimal fue concebido para facilitar la multiplicacion y division de los numeros por algun multiplo de 10.

8 0
3 years ago
A cake that costs $32 is on sale for 15% off and there are no taxes. Explain why the expression
Darya [45]

Answer:

$27.2

Step-by-step explanation:

A cake that costs $32 is on sale for 15% off and there are no taxes. Explain why the expression (0.85).32 represents the final price of the cake in dollars.

This is explained in the calculation below

= A cake that costs $32 is on sale for 15% off

The amount off the cake is calculated as

= 15% of $32

= 15/100 × 32

= $4.8

The amount he is paying for the cake =>$32 - $4.8

= $27.2

The above expression is obtained as

(0.85).32

= (100% - 15%) × 32

=( 1 - 0.15) × 32

= 0.85 × 32

= $27.2

The final price of the cake = $27.2

7 0
3 years ago
What is it called when you have two burgers but one of them is half?
antiseptic1488 [7]

1 1/2? I pretty sure this is the answer.

4 0
3 years ago
Read 2 more answers
Other questions:
  • A paper describes a study of the use of MRI (Magnetic Resonance Imaging) exams in the diagnosis of breast cancer. The purpose of
    7·1 answer
  • Solve for c. a=11+4b−4c
    9·2 answers
  • Please help me!!! Will get brainliest!!!
    11·1 answer
  • 2x
    12·1 answer
  • I can’t figure out how to use the zeros in the polynomial. Please explain
    12·1 answer
  • Debra is on the swim team. Each week she swims a total of 7000 meters. How many kilometers does she swim each week?
    8·1 answer
  • Find the cartesian equation of r = 8 sin thet + 8 cos theta
    10·1 answer
  • Which rule explains why these triangles are congruent?
    15·1 answer
  • PLZ HELP. Which is the better buy? $40 for three digital movies
    12·1 answer
  • Desiree writes songs for her band. her first song is 3 1/2 minutes long. Her second song is 1 1/2 times as long as her first son
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!