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
Rudik [331]
3 years ago
9

The vertex of this parabola is at (2, -4). When the y-value is -3, the x-value is -3. What is the coefficient of the squared ter

m in the parabola's equation?A.-1B.-5C.1D.5
Mathematics
1 answer:
attashe74 [19]3 years ago
7 0

Answer:

a = 1/25

Step-by-step explanation:

The vertex form of the parabola is

y = a(x-h)^2 +k

where (h,k) is the vertex

y = a(x-2)^2 -4

We have a point on the parabola (-3,-3) so substitute this into the equation

-3 = a(-3-2)^2 -4

-3 = a(-5)^2 -4

Add 4 to each side

-3+4 = a(25) +4-4

1 = 25a

Divide each side by 25

1/25 = a

y = 1/25(x-2)^2 -4

You might be interested in
Josue went to his favorite donut shop with his friend. The donut shop was having a special. A dozen donuts was selling $11.76. H
yan [13]

Answer:

0.98 cents

Step-by-step explanation:

All you do to solve this is ou do 11.76 divided by 12

11.76 divided by 12 is actually just 98 cents (0.98)

8 0
2 years ago
7x-5=2x SOLVE THE PROBLEM​​
sleet_krkn [62]

Answer:

x = -17.5

Step-by-step explanation:

7x-5= -35

-35/2 = -17.5

4 0
2 years ago
Read 2 more answers
The Millers plan on retiring soon. When they were first married they purchased 1,000 shares in a mutual fund that was at that ti
kozerog [31]

Answer: There is 680% increase for the fund.

Step-by-step explanation:

Since we have given that

Number of shares they purchased = 1000

Cost of per share at the time of their marriage = $10

So, Amount of fund will be

1000\times 10=\$10000

Cost per share after 30 years = $78

So, Amount of fund will be

78\times 1000=\$78000

Percentage of increase for the fund will be given as

\frac{78000-10000}{10000}\times 100=680\%

Hence, there is 680% increase for the fund.

8 0
2 years ago
Read 2 more answers
What is the cost of making one burrito? (Remember that costs are negative.) Explain how you found your answer.
Dafna11 [192]

Answer:

it cost 5.99

Step-by-step explanation:

it all depends on the type of burrito

4 0
2 years ago
A rock is thrown straight up from the top of a bridge that is 75 ft high with an initial velocity of 32 ft/s. The height of the
Amanda [17]

Step-by-step explanation:

When -16t² + 32t + 75 < 75, -16t² + 32t < 0.

=> 16t(2 - t) < 0, t < 0 or t > 2.

However t < 0 is rejected as time cannot be a negative value. Hence the solution in interval notation is (2, ∞).

4 0
3 years ago
Other questions:
  • 4/5-2/15=<br><br><br><br> 4/7-2/8=<br><br><br><br> Find the difference
    11·1 answer
  • What is the standard form of X=2 and x-5
    7·1 answer
  • I will give brainiest to whoever answers this 20 is 25% of what number? enter your answer in the box . plz help
    14·1 answer
  • I am having trouble learning how to convert an equation to standard form can someone please explain this to me? ( my teacher ten
    15·1 answer
  • MULTIPLE CHOICE QUESTION
    13·1 answer
  • Justin earns $8 an hour for the first 40 hours he works and $12 for each additional hour. How much will justin earn for a week i
    10·1 answer
  • Complete the table:​
    9·1 answer
  • Which similarity statements are true? Check all that
    6·2 answers
  • Write an equatiob of line in slope intercept from passing through (-10,-8) and parallel to y=1/5x-3
    11·1 answer
  • A crew charges $750 for 9 hours of work. For 14 hours, they charge $1200. Write an equation for this situation.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!