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]
3 years ago
8

Can someone please help me on 7

Mathematics
2 answers:
Korolek [52]3 years ago
8 0

Answer:

B

Step-by-step explanation:

plug in 5

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

masya89 [10]3 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
Determine the relationship between the two given lines y=3 and y=2
nekit [7.7K]
They’re parallel to each other
3 0
3 years ago
Shamariah collects silk roses. She had 17 silk roses in a vase. Six friends each gave her 3 more roses. How many roses does sham
max2010maxim [7]

Answer: 4535

Step-by-step explanation:

she has 17 slik roses already, and 6 friends give her 3 silk roses each, so that's 6 times 3, which makes 18, and 17 plus 18 is 35, so she has 35 silk roses in all.

4 0
3 years ago
WILL MARK BRAINLIST
Elan Coil [88]
1. The first 10 multiples of 13 are 13, 26, 39, 52, 65, 78, 91, 104, 117, and 130.
2. x - 5
3. x + 80
5 0
3 years ago
9. The probability of a child being born with light-colored eyes to two particular parents is 0.25.
slavikrds [6]

If X is a random variable representing the number of children that end up having light-colored eyes, then X follows a binomial distribution with success probability p = 0.25 and number of trials n = 5.

The variance of a binomial distribution with these parameters is n p (1 - p), so the variance in this case would be

5 • 0.25 • (1 - 0.25) = 0.9375 ≈ 0.9

4 0
3 years ago
Find the surface area of the figure below:<br> ???
Ulleksa [173]

Answer:

85 ft^2

Step-by-step explanation:

The four sides of the pyramid: 5×6÷2×4=60

The bottom of the pyramid: 5×5=25

60+25=85 ft^2

6 0
3 years ago
Other questions:
  • A gardener brought 5 rabbits, after 2 months rabbits became 10, and after 4 months they became 20. If the growth continues on th
    8·2 answers
  • MATH HELP PLEASE 50 POINTS
    5·2 answers
  • (x^3-2x^2-5x+6)÷(x-1) solve using long division, must show work​
    8·1 answer
  • ANSWER PLZ QUICK AND FAST
    10·1 answer
  • How many of the numbers between 20 and 40 are prime numbers?​
    11·2 answers
  • How can estimating be helpful
    10·1 answer
  • The equation yˆ=−5.131x 2+31.821x−3.333 approximates the number of people standing in line to catch a commuter train x hours aft
    9·2 answers
  • Which expression is equivalent to 21d + 18
    9·2 answers
  • 10=2x+12<br> What’s the steps
    9·2 answers
  • Pleaseeeeeee helpppppp
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!