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Maurinko [17]
3 years ago
9

A model rocket is shot straight up from the ground. The height, h (in meters) after t seconds is approximated by: h(t) = 15 + 23

t – 52
What is the maximum height the rocket will reach?
A. 56.4 meters
B. 15.0 meters
C. 33.0 meters
D. 41.45 meters
Mathematics
1 answer:
Anna35 [415]3 years ago
7 0

Answer:

DUNNO

Step-by-step explanation:

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Which values for A and B will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b
Nata [24]

Answer:

a = -2 , b = -8

Step-by-step explanation:

* Lets talk about the solution of the linear equations

- There are three types of the solutions of the system of linear equations

# If the two lines intersect each other, then there is one solution

- The equations are ax+ by = c , dx + ey = f

# If the two lines parallel to each other, then there is no solution

- The equations are ax+ by = c , ax + by = d in its simplest form ,

  where a is the coefficient of x , b is the coefficient of y and

  c , d are the numerical terms

# If the two lines coincide (over each other), then there are infinite

   solutions

- The equations are ax+ by = c , ax + by = c in its simplest form, where

  a is the coefficient of x , b is the coefficient of y and c is the

  numerical term

* Lets solve the problem

∵ The system of equation is:

   ax - y = 8 ⇒ (1)

   2x + y = b ⇒ (2)

∵ The system create infinitely many solutions

∴ The lines are coincide

- The equations must be equal, then multiply equation(1) or (2) by -1 to

  make the coefficient of y in the two equations equal

∴ -ax + y = -8

∴ 2x + y = b

∵ Their coefficients of x are equal

∵ Their coefficients of y are equal

∵ Their numerical terms are equal

∵ The coefficient of x in equation (1) is -a and in equation (2) is 2

∴ -a = 2 ⇒ multiply both sides by -1

∴ a = 2

∵ The numerical term in equation (1) is -8 and in equation (2) is b

∴ b = -8

* The values for a and b will create infinitely many solutions are -2 , -8

5 0
3 years ago
2)<br> 3<br> 3 cm<br> 9 cm<br> Find area
sergey [27]
Answer:
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Explanation:
3 x 9 = 27
8 0
3 years ago
in order to be invited to tutoring or extension activities a student's performance must be at least 20 points higher or lower th
Ad libitum [116K]

Answer:

p ≤ 85 or p ≥ 125

Step-by-step explanation:

8 0
3 years ago
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Celia sells calendars for fundraiser. Each calendar cost $9. She sells 16 calendars to her family members and 14 calendars to th
Sunny_sXe [5.5K]

Answer:

Since Her goal is to earn $ 300 , but now she is earning only $270 ,Hence Celia will not achieve her goal  .

Step-by-step explanation:

Given as :

The cost of each calendar = $ 9

The number of calendar sold to the family = 16

The number of calendar sold to the neighborhood = 14

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5 0
3 years ago
Help with 5??????????
crimeas [40]
Answer is number one. The number inside the bracket is the time and the number after the equal sign is the height. As you can see, at t=5, height=75.
8 0
3 years ago
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