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AleksAgata [21]
3 years ago
8

Madeline spent 4 hours at the gym each week how much time does he spend at the gym in an 8 week period.

Mathematics
1 answer:
emmasim [6.3K]3 years ago
5 0
He spends 32 hours in the gym in an 8 week period. (8*4)
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A cylinder has a radius of 5x + 3 and a height of 4x + 2. Which polynmial in standard form best describes the total volume of th
devlian [24]
V=π(r)2 (h)
3.141592(5x+3)2 (4x+2)
6 0
3 years ago
Consider rectangle WXYZ with diagonal XZ. Rectangle W X Y Z is cut diagonally into 2 equal triangles. Angle Y X Z is 26 degrees
shusha [124]

Answer:

26 i think

Step-by-step explanation:

next time  try upload a picture so it for easier for us to answer

6 0
2 years ago
Read 2 more answers
The volume of the polyhedron is ______ cm3.
PSYCHO15rus [73]

Answer:

50.80 cm^3

Step-by-step explanation:

the polyhedron is a rectangular pyramid

Volume of a rectangular pyramid = 1/3 x ( width x height x length)

1/3 ( 4 x 5 x 3) = 20 inches

we need to convert inches to cm

1 in = 2.54 cm

20 x 2.54 = 50.80 cm^3

8 0
3 years ago
An object launched straight up at a speed of 29.4 meters per second has a height, h, in meters of h , t seconds after the object
Nostrana [21]

Answer:

h = 44.06 meters (maximum height)

the time the object takes to complete this whole path is 6 seconds, this is why the time at which the object reaches its maximum height will between 0 and 6 seconds

Step-by-step explanation:

To solve this question, we need to first recognize that this is a constant acceleration problem, specifically, it can be thought of as a projectile motion problem.

Recall, the equations of motion:

1) v^2 - v_0^2 = 2a(s - s_0)\\2) s = v_0^2  + \frac{1}{2} at^2\\3) v = v_0 + at

What do we already know?

  • v_0 = 29.4 ms^-1
  • The launch is straight up
  • a = -9.81 ms^-2 this is the gravitational acceleration g
  • s_0 = 0 m, since our reference point is at s = 0, (the ground)

We can use use the Eq(1):

we know that when any object is launched up, at maximum height its velocity is going to be zero, v = 0 ms^-2

v^2 - v_0^2 = 2a(s - s_0)\\0^2 - (29.4)^2 = 2(-9.81)(s- 0)\\s = 44.06 m

this is the maximum height!

Why does t have to between zero and six?

We can answer this using a bit visualization, if you think about the second equation

s = v_0 t - \frac{1}{2}at^2\\ s = 29.4t - 4.905t^2

this is the equation of the whole trajectory that object makes.

and if you solve this by making s = 0, you will get the times at which the object was at the ground. the times will be 0s and 5.99s.

so the amount of time the object takes to go through this whole path is 6 seconds and this why the object will only reach its maximum height in between this time interval.

hope this helps :)

5 0
3 years ago
Which describes where living and nonliving parts of an environment interact with and rely on each other?
Natali [406]

Answer:

B

Step-by-step explanation:

Ecology is the study of ecosystems. That is, ecology is the study of how living organisms interact with each other and with the nonliving part of their environment.

4 0
3 years ago
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