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
Triss [41]
3 years ago
6

Given f(x) = 2x + 9, if f(x) = 15, find x.​

Mathematics
1 answer:
AleksandrR [38]3 years ago
4 0

Answer:

<h2>x = 3</h2>

Step-by-step explanation:

f(x)=2x+9\\\\\text{Substitute}\ f(x)=15:\\\\15=2x+9\qquad\text{subtract 9 from both isdes}\\\\15-9=2x+9-9\\\\6=2x\qquad\text{divide both sides by 2}\\\\\dfrac{6}{2}=\dfrac{2x}{2}\\\\3=x\to x=3

You might be interested in
Find the equation that has a slope of - 1/8 and passes through the point (0.-4)
nikdorinn [45]

Answer:

ez, answer choice number 4

Step-by-step explanation:

y=-1/8x(this is the slope) -4(this is the y intercept

4 0
2 years ago
Which of the numbers below could be terms in the sequence an=4n-7 A)29 B)21 C)20 D)28
natali 33 [55]

Answer:

A)29 and B) 21,

Step-by-step explanation:

First,in the sequencea_n=4n-7 , the parameter n must to be a integer.

Second, we need to solve the equations by  n.

n=(a_n+7)/4

All the option in the problem represent an a_n

Then, we need to prove all number in the options, if the result is a integer number, this option can be part of the sequence.

For A)

n=(29+7)/4=9\\

For B)

n=(21+7)/4=7\\

For C)

n=(20+7)/4=6.75\\

For D)

n=(28+7)/4=8.75\\

Only A) and B)  only A and B meet the requirement

4 0
3 years ago
A dog that weighs 14 pounds should eat 1 5/8 cups of a certain type of dog food per day. How much of the same type of dog food s
stira [4]
1 5/8 = 13/8
(13/8)/14 = .116 or 13/112
.116 (26) = 3.016 or 169/56
6 0
3 years ago
Read 2 more answers
What is 36/48 simplifiied?
Sunny_sXe [5.5K]
36/48 simplified is 3/4

divide both by 12
36÷12
3
48÷12
4
3 0
3 years ago
Read 2 more answers
4 (b - 3 ) = 6 steps in order from first to last
Amiraneli [1.4K]

Answer:

B= 9/2 Hope this helped <3

Step-by-step explanation:

Let's solve your equation step-by-step.

4(b−3)=6

Step 1: Simplify both sides of the equation.

4(b−3)=6

(4)(b)+(4)(−3)=6(Distribute)

4b+−12=6

4b−12=6

Step 2: Add 12 to both sides.

4b−12+12=6+12

4b=18

Step 3: Divide both sides by 4

8 0
3 years ago
Read 2 more answers
Other questions:
  • A submarine first went down 725 feet below sea level. It then went up 150 feet. What was the final depth of the submarine? (A) -
    12·1 answer
  • A bag has 6 green marbles and 6 yellow marbles. Half of the yellow marbles are made of glass. A marble is selected at random fro
    6·1 answer
  • Please help! If the two triangles are similar, which equation represents the value of side x?
    9·1 answer
  • What are the solutions of the quadratic equation 50-x^2=0
    11·1 answer
  • A teacher took 25 students on a field trip to a museum. Of the 25 students, 16 students had never been to a museum before. What
    11·1 answer
  • Px=y<br><br> x=4<br><br> p=12<br><br> y=___<br><br><br> Please help me out
    9·2 answers
  • 8m and 12.8 and 10 and 13. What is the area of the prism
    15·1 answer
  • What is the solution set to the inequality 2²-x≥6
    6·1 answer
  • Help :')<br><br> What integer does the arrow indicate?<br><br><br><br> -9<br> -14<br> -3<br> 6
    5·2 answers
  • Pls help I’m losing my mind
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!