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anastassius [24]
3 years ago
15

Can you please help me on 2,3,4, and 5? I will mark the brainliest plus 12 points for answering.

Mathematics
1 answer:
Marianna [84]3 years ago
8 0

Answer:

2) Exact

3) Exact

4) Exact

5) Approximation

Step-by-step explanation:

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Macy has 8 quarters for every 9 pennies in her change purse. How many pennies would she have if she has 40 quarters?
Evgen [1.6K]

Answer:

what you know bout love i got what you need. ️...........

8 0
2 years ago
Read 2 more answers
An arrow is launched upward with a velocity of 192 feet per second from the top of a 95-foot stage. What is the maximum height a
Shalnov [3]

9514 1404 393

Answer:

  671 feet

Step-by-step explanation:

There are a couple of ways to figure this. One is to use a sort of shortcut equation to find the distance traveled (d) by an object when subject to some initial velocity (v) and acceleration (a). Here the acceleration due to gravity is -32 ft/s².

  v² = 2ad

  d = v²/(2a) = (192 ft/s)^2/(2·32 ft/s²) = 576 ft

This height is in addition to the starting height of 95 ft, so the arrow's maximum height is ...

  max height = 95 ft + 576 ft = 671 ft

__

Another way to work this problem is to start with the equation for ballistic motion. Filling in the given initial velocity and height, we have ...

  h(t) = -16t^2 +192t +95

The time the arrow reaches the maximum height is the time representing the axis of symmetry of the parabola:

  t = -(192)/(2(-16)) = 6

Then the maximum height is ...

  h(6) = -16·6^2 +192·6 +95 = 671

The maximum height is 671 feet.

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<em>Additional comment</em>

For the standard-form quadratic ...

  y = ax^2 +bx +c

The axis of symmetry is ...

  x = -b/(2a)

6 0
3 years ago
Determine if the two triangle are congruent. If they are, state how?​
Murrr4er [49]

Answer:

The triangles are congruent by SAS.

Step-by-step explanation:

The triangle have two congruent sides because it is given. The congruent angle is the angle at which they connect, these two angles are congruent because they are vertical angles.

5 0
3 years ago
Two professors in the mathematics building have offices that are consecutive odd numbers with a sum of 15,044. what are the offi
AlladinOne [14]
Let one of the number be x
The other number will be x + 2

x + x + 2 = 15044
2x + 2 = 15044
2x = 15044 -2 
2x = 15042
x = 7521
x + 2 = 7521 + 2 = 7523

The office number is 7521 and 7523
6 0
3 years ago
The volume of a box is 400in3. if the height is 10in and the length is 8in, what is the width of the box (volume=l•w•h)
tankabanditka [31]
10•8=80
so something times 80 will equal 400
80•5=400
6 0
3 years ago
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