answer.
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
Finger [1]
2 years ago
12

Chun was asked whether the following equation is an identity: 3(2x-1)^2+27=36x^2-36x+363(2x−1) 2 +27=36x 2 −36x+36

Mathematics
1 answer:
ICE Princess25 [194]2 years ago
5 0

Answer: Chun is incorrect. He made a mistake in step 2.

Step-by-step explanation:

You might be interested in
Mr. Wilson is giving his students a vocabulary test tomorrow over all the terms they have learned from this semester. Today, he
Eddi Din [679]
1) The population

Is the set of all the terms that the teacher taught this semester and which he wrote down on the note cards and put in the paper bag.

2) The sample is every set of five cards that is selected by each student.

3) I think the sample is representative because all ther terms have the same probability of being selected. 

Further, given that the cards are replaced every time all the students will face the same population when they are going to select a sample.
<span><span>Comments </span> <span>Report</span></span>
8 0
2 years ago
Derrick needs to figure out how he’s doing on his test scores so far this year. You can help by calculating the mean and the med
romanna [79]

Answer:

74.4 ,81.5 , median

Step-by-step explanation:

ed20 answers

4 0
2 years ago
Read 2 more answers
The distance of a golf ball from the hole can be represented by the right side of a parabola with vertex (−1, 8). The ball reach
sukhopar [10]

Answer:

The required equation is:

y = -\frac{4}{3}t^2 -\frac{8}{3}t + 4

Explanation:

Let us assume that the hole is at y = 0m, with x as the time.

From the question we have (-1s, 8m) as the vertex (here x being the time variable is supposed to be in seconds and y being the distance variable is supposed to be in meters)

At x = 1s, the ball gets to the hole, therefore we have point (1s, 0m)

We know that the vertex of the parabola y = ax² + bx + c is at

x =\frac{-b}{2a}

therefore we have:

-1 = \frac{-b}{2a}

We then have the following equations:

8 = a\times -1^2 + b\times -1 + c

0 = a\times -1^2 + b\times 1 + c

-1 = \frac{-b}{2a}

From the 3rd equation we have

1 X 2a = b.

Therefore we have:

8 = a\times -1^2 - 1\times 2a\times1 + c

0 = a\times 1^2 + 1 \times2a\times 1 + c

We can simplify both equations and get:

8 = a\times( -1^2 - 2s^2) + c = -a\times 3^2 + c

0 = a\times(1^2 + 2^2) + c = a\times 3^2 + c

The first equation now becomes:

8 = -a\times 3 - a\times 3 = -a\times 6

a = frac{8}{-6} = -\frac{4}{3}

With a, we can find the values of c and b.

c = -a\times3 = -(-\frac{4}{3})*3 = 4

b = 1\times 2a = 1\times 2(-\frac{4}{3})= -\frac{8}{3}

Then the equation is:

y = -\frac{4}{3}t^2 -\frac{8}{3}t + 4

6 0
2 years ago
- Maya and Fiona have a total of $16.
Bingel [31]

Answer:

Maya has 3 dollars and Fiona has 13

Step-by-step explanation

4 0
2 years ago
A chef bought some green and red peppers. She bought 18 green peppers, which was 3/4 the total number.
Nezavi [6.7K]
A: Their would be 24 red peppers because I did 18 divided by 3/4 and got 24 and 24 times 3/4 is 18
B:She bought 42 peppers all together because 18 plus 24 is 42
4 0
2 years ago
Other questions:
  • What is 3 times the sixth power of 10
    13·2 answers
  • Which expressions represents twelve diminished by six times a number:. 12-6n; 6n-12; 12n-6
    7·2 answers
  • simple interest = P × r × t If the principal is $200 and the interest rate is 4 percent, what is the simple interest earned in o
    8·1 answer
  • A brand new filled jar of salsa is 11 cm tall and a has a radius of 6 cm. Kelly eats some of the salsa and the salsa in the jar
    13·2 answers
  • The areas of two equilateral triangles are 27 yd2 and 75 yd2. Find the ratio of their perimeters.
    15·2 answers
  • A recent hailstorm caused $1200 worth of body damage to Karen's car. Based on Karen's insurance policy given below, how much wil
    15·2 answers
  • HELP ME SO I DON’T FAIL! A regression line was calculated for three similar data sets (A, B, and C) that measure the height of a
    12·2 answers
  • If 8 bags of chips cost $10.32; how much will you pay for 20 bags?
    11·2 answers
  • The proportion of a population with a characteristic of interest is p = 0.37. Find the mean and standard deviation of the sample
    8·1 answer
  • A scientist runs an experiment involving a culture of bacteria. She notices that the mass of the bacteria in the culture increas
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!