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
andreyandreev [35.5K]
2 years ago
8

Can someone please help me on 7

Mathematics
2 answers:
Korolek [52]2 years ago
8 0

Answer:

B

Step-by-step explanation:

plug in 5

5^2-5(4)+7=12

masya89 [10]2 years ago
4 0
<h3>Answer: B.  f(x) = x^2-4x+7</h3>

===========================================

Work Shown:

A.

f(x) = 3x-8

f(5) = 3*5-8 ... replace every x with 5; simplify with PEMDAS

f(5) = 15-8

f(5) = 7

We can cross choice A off the list since we got 7 as an output, instead of 12.

---------------

B.

f(x) = x^2-4x+7

f(5) = (5)^2-4(5)+7

f(5) = 25-4(5)+7

f(5) = 25-20+7

f(5) = 5+7

f(5) = 12

We got the output we wanted. So we can stop here.

---------------

If you're curious about the others, then,

C.

f(x) = -x+14

f(5) = -5+14

f(5) = 9

That doesn't work, so we cross choice C off the list.

---------------

D.

f(x) = |x-7|

f(5) = |5-7|

f(5) = |-2|

f(5) = 2

Choice D is crossed out as well.

So only choice B works.

You might be interested in
Hello u have to use the distributive property to answer the question
Sedbober [7]
The answer is B: 53.6x + 60.3

6.7 (8x + 9)

6.7 x 8x + 6.7 x 9
8 0
3 years ago
Read 2 more answers
Solve for x.<br><br> y=4+bx^2
kicyunya [14]
y=4+bx^2

bx^2 = y - 4

x^2 =  \dfrac{y-4}{b}

x = \pm \sqrt{ \dfrac{y-4}{b} }
3 0
3 years ago
Algebra question: Anita rides her bike 82.4 miles each month. Which is the best estimate of the total distance Anita bikes in 6
alekssr [168]

<u><em>*(Answer)*=</em></u> 494.4

4 0
3 years ago
Read 2 more answers
PLEASE HELP :( .... PLEASE
8_murik_8 [283]
You have 2 triangles and 3 rectangles. 
Start with a triangle:
area is base side * height / 2 ->  4 * 3 / 2 = 6
The other triangle has the same area: 6

First rectangle: side * other side -> 7 * 5 = 35
Second rectangle: 7 * 4 = 28
Third rectangle: 7 * 3 = 21

Now simply add all this together: 6+6+35+28+21 = 96

5 0
3 years ago
Josiah invests $360 into an account that accrues 3% interest annually. Assuming no deposits or withdrawals are made, which equat
Natalka [10]
y = 360(1.03)x is the answer
6 0
3 years ago
Read 2 more answers
Other questions:
  • Whats the expontial form for 81
    15·1 answer
  • What is the sum of the integers between the square root of 12 and 40?
    9·1 answer
  • If y varies directly as x, and y is 12 when x is 1.2, what is the constant of variation for this relation? A) 1 B) 10 C) 10.8 D)
    15·2 answers
  • I been trying to figure the question out for the past 20 minutes and I can’t find the answer please help. (Question in picture)
    15·1 answer
  • In a large city, the city supervisor wants to find the average number of aluminum cans that each family recycles per month. So,
    12·1 answer
  • Which measurement is more precise: 12.3 meters or 16.52 meters ? ​
    9·1 answer
  • Please help with this question.
    14·2 answers
  • What is the solution for the value of x
    5·1 answer
  • Question 1(Multiple Choice Worth 4 points) (05.01)Which equation can be used to calculate the area of the shaded triangle in the
    13·1 answer
  • Write an expression equivalent to<br> x^2+7x+6x
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!