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
Vilka [71]
3 years ago
9

The equation y= -5.131x^2 +31.821x -3.333 approximates the number of people standing in line to catch a commuter train x hours a

fter 5 a.m.
What is the best estimate for the number of people in line at 8 a.m?
A. 77
B. 46
C. 40
D. 32
Mathematics
2 answers:
Misha Larkins [42]3 years ago
7 0

Answer:

The answer is 42!!! I just took test.


Step-by-step explanation:


IRINA_888 [86]3 years ago
5 0
<span>B. 46 Replacing x with 3 (= 8-5) gives -5.131*3^2 +31.821*3 -3.333 = 45,951</span>
You might be interested in
Question is attached below, Good Luck! I will Mark Brainliest for best answer!
DerKrebs [107]

Answer:

1960 cm^2

Step-by-step explanation:

Surface area:

Area of cross section x 2 = 1/2 x 20 x 21 x 2 = 420 cm^2

Area of slope = 29 x 22 = 638cm^2

Area of base = 22 x 20 = 440cm^2

Area of back = 21 x 22 = 462cm^2

Total Surface area = 462+440+638+420 = 1960cm^2

Hope this helps

6 0
3 years ago
Algebra 1 Please help! thank u sm
olga_2 [115]

Answer:

1. Slyvia is wrong. You treat the numbers normally when dividing the left side, so 3.61/4.1 = .88. When dividing the exponents, you subtract the numerator from the denominator, so -11-7 = -18. So, you do have .88 * 10^-18, at first, but when you are working in scientific notation you want the decimal to be greater than so, which requires us to add an additional -1, to make it 8.8 instead of 0.88. This is because we want to move the decimal place left one more time. This results in our final answer being 8.8 * 10^-19, which is not Slyvia's answer.

2. Dylan's answer is correct. He subtracted the exponents correctly, then moved the decimal place over one place towards the left.

3. Ethan is wrong. He added the exponents, instead of subtracting. However, you cannot do this, because when you are dividing exponents, you must subtract.

Step-by-step explanation:

I have this acronym I learned called MADSPM, which has helped me a lot. I never learned it in Algebra, but I wish that they had taught it. Each letter corresponds with an exponent rule. If this makes sense, here is what it stands for:

When you multiply, you add.

When you divide, you subtract.

When there are parentheses, you multiply.

In this case, it was solely division. So, you just need to remember division = subtraction, when it comes to exponents.

Hopefully this helped. If you need me to explain it better, please let me know, and I will try. Thanks much & have a wonderful day!

7 0
2 years ago
Me pueden resolver esto porfa
Ivanshal [37]

Answer:

need points for school i have to have 50 points by 3 pm ill owe u promise :)

Step-by-step explanation:

3 0
2 years ago
A regular pentagon has side lengths of 10 cm and an
Fittoniya [83]

Answer: 172 square centimeters.

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Area of a pentagon (A) = 1/2× 5s × a

Where:

s : side of the pentagon

a: apothem

Replacing with the values given and solving for A (area):

A =1/2 x (5 x10) x 6.88

A = 172 square centimeters.

Feel free to ask for more if needed or if you did not understand something.

7 0
2 years ago
Help me please. need quickly. What is the value of Z
larisa86 [58]

Answer:

z = 6

Step-by-step explanation:

8z-36=2z\\6z-36=0\\6z=36\\z=6

8 0
2 years ago
Other questions:
  • The perimeter of the rectangle is 24 cm. Find the value of x.
    9·1 answer
  • After 5 years, Rachel’s amount in her savings account is $7446.52. Her account earned interest at 4.32% APR and was compounded d
    8·1 answer
  • 1<br> Is the value of -6 -6 POSITIVE, NEGATIVE, or ZERO?
    11·1 answer
  • Small juice bottles come in packages of 6. Yogurt packages come in 10. Paula wants to have the exact same number of each item. H
    10·2 answers
  • Your co-worker, Amanda, and you are reliving your high school athletic "glory days" during a coffee break. She played basketball
    14·1 answer
  • The box plot was created by using which pieces of data? A) an upper quartile of 56 and a median of 50 B) a lower quartile of 56
    10·1 answer
  • Find the area of each sector.
    14·1 answer
  • Pls answer 2,3,5,6 and thank you for helping and pls work it out
    10·1 answer
  • He expression 5x − 3(2x − 4) is equivalent to the expression 12 − x.<br><br> True<br> False
    7·1 answer
  • What is the slope-intercept form of the following equation?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!