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
Lelechka [254]
2 years ago
11

Given that f(x)=x+3 and g(x) = x^2 - x, find (f+g)(4)

Mathematics
1 answer:
madreJ [45]2 years ago
7 0

The answer is 19

Check out the attached images for the steps. They are slightly different approaches that lead to the same answer.

You might be interested in
Fifteen times the square of a non-zero number is equal to 20 times number.What is the number? Its not 4/3
e-lub [12.9K]
The number is (2√3) / 3

To find the missing number, convert what it says in words to an equation:
15 {x}^{2}  = 20x
Divide both sides by 15:
{x}^{2}  =  \frac{20}{15}   \\  \\  {x}^{2}  =  \frac{4}{3}
Take the square root:
x =  \sqrt{ \frac{4}{3} }  \\  \\ x =  \frac{2}{ \sqrt{3} }  \\  \\ x =  \frac{2 \sqrt{3} }{3}
4 0
3 years ago
The proper angle for a ladder is about 75 ∘ 75∘ from the ground. suppose you have a 14 foot ladder. how far from the house shoul
jonny [76]
We just use the sinus rule to calculate this

a / sin alpha = b / sin beta

Alpha is the 90 degree angle from the wall to the floor
beta is the angle from the top of the ladder to the wall,
wich is 90 degrees - 75 degrees (triangle has 180 degrees angles, one is 90 degrees), so beta = 15 degrees

14 foot / sin 90 = b / sin 15
sin 90 = 1
we move the sin15 over to the other side

14 foot x sin 15 = b
b = 3.62 foot

5 0
3 years ago
If the lengths of two sides of a certain triangle are 5 and 10, what is the length of the third side of the triangle?
lina2011 [118]

Answer:

Step-by-step explanation:

let x be the length of third side.

10-5<x<10+5

or 5<x<15

so third side is between 5 and 15 .

5 0
3 years ago
Read 2 more answers
-57and 13 what is the distance?
erastovalidia [21]
The distance between the two is 70
7 0
3 years ago
Read 2 more answers
Can someone help I don’t understand my answer are not adding up
andriy [413]

Answer:

B

Step-by-step explanation:

∠ ABC = 9x + 5 ( alternate angles )

∠ ABC and ∠ DCB are sam- side interior angles and sum to 180° , that is

9x + 5 + 16x = 180

25x + 5 = 180 ( subtract 5 from both sides )

25x = 175 ( divide both sides by 25 )

x = 7

Then

∠ ABC = 9x + 5 = 9(7) + 5 = 63 + 5 = 68° → B

6 0
3 years ago
Other questions:
  • Help please... dont answer if u dont know bc this is for a grade
    14·2 answers
  • Convert the polar equation to rectangular form r=2/1+sin( theta)
    5·1 answer
  • 160/5g or 315/9g show me wat u did so i can understand
    6·1 answer
  • What is the area of the triangle?
    12·1 answer
  • I need help!!!!!!!!!?
    5·1 answer
  • Pleaseee help
    6·2 answers
  • Raise the sum of u and v to the 4th power
    12·1 answer
  • What is 3/4 the distance from 7
    11·1 answer
  • The yearbook committee polled 80 randomly selected students from a class of 320 ninth graders to see if they would be willing to
    9·1 answer
  • Write each expression using n as your variable.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!