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
wolverine [178]
3 years ago
13

7. A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the

Mathematics
1 answer:
svp [43]3 years ago
4 0

Answer: 475.59 meters .

Step-by-step explanation:

The correct equation is the following:

y =-0 .02x^2 +9.5x + 5.6

For this exercise you need to use the Quadratic formula:

x = \frac{-b\±\sqrt{b^2-4ac}}{2a}

In this case you can identify that the values of "a", "b" and "c" are:

a=-0.02\\\\b=9.5\\\\c=5.6

Now you must substitute these values into the Quadratic formula and then evaluate. You get:

x=\frac{-9.5\±\sqrt{(9.5)^2-4(-0.02)(5.6)}}{2(-0.02)}\\\\x_1=475.588\\x_2=-0.588

Choose the positive one and round it to the nearest hundreth:

x_1\approx 475.59

You might be interested in
Help me with this one please
galben [10]

Answer:

I think the top and the two in the middle but I can't really see it's a blurry picture

7 0
3 years ago
Erwin earns $ 2 , 100 per month. Her deductions amount to 26 % of her paycheck. How much does Erwin take home each month?
Sergeu [11.5K]

Answer:

Credit ⇒ 45

Debit ⇒ $30

Step-by-step explanation:

Credit = $45

Debit = $30

When an account balance increases it means that it has been credited and when it decreases, it has been debited.

The beginning balance here is $0 and the closing balance is $15.

There were 2 transactions, one credit and one debit.

For the closing balance to be $15, the Credit amount must have been $15 more than the Debit amount.

6 0
2 years ago
The sum of two numbers is 87. if three times the smaller number is subtracted from the larger number the result is seven. find t
Stolb23 [73]
\left \{ {{a+b=87} \atop {a-3b=7}} \right.



a-3b=7
a=7+3b

a+b=87
(7+3b)+b=87
7+4b=87
4b=87-7
4b=80
b=20

a=7+3b
a=7+3*20
a=7+60
a=67
5 0
3 years ago
B +2.01 =5.5 what dose b equal
Rom4ik [11]

Answer:

3.49

Step-by-step explanation:

B = 5.5-2.01 = 3.49

have a great day!

6 0
3 years ago
Read 2 more answers
3.From Question 2 If Rachel's car can drive 18 miles per gallon of gas, and she has to drive 90
maria [59]

Answer:

90miles divided by 18 miles is 5 gallons

8 0
3 years ago
Other questions:
  • If 6a+4b+c=-7, what is -2c-12a-8b
    8·1 answer
  • Anna wants to take fitness classes. She compares two gyms to determine which would be the best deal for her. Fit Fast charges a
    8·2 answers
  • A scale drawing of a room is 6inches x4inches. Scale of 1:40. What is the square feet
    5·1 answer
  • The London theater offers child tickets at 10$each and adult tickets at 20$ each.Mrs burham buys 34 tickets at a total cost of 5
    10·1 answer
  • Solve the system of equations by the substitution method.
    12·2 answers
  • P=2a+2b; P=56, a=12 solve for b
    13·1 answer
  • What is the solution to the system?<br> 8x + 4y = 12<br> y = -2x + 3
    11·1 answer
  • Which measurement is a reasonable height for a child? Explain your choice
    12·2 answers
  • HELPPPP I need this for a math quiz for my grade
    7·1 answer
  • The water was pumped out of a backyard pond. What is the domain of this<br> graph?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!