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anyanavicka [17]
2 years ago
7

C) The opposite of the least 2-digit positive integer is what ​

Mathematics
2 answers:
Dmitry_Shevchenko [17]2 years ago
6 0
That would be -10...
ikadub [295]2 years ago
5 0

Answer:   i dont know

Step-by-step explanation:

i dont  know  :>

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Find the volume of the cone. Round your answer to the nearest hundredth.
noname [10]

Answer:

can we get the figure plz

7 0
3 years ago
Two teams of movers are lowering a piano from the window of a 10 floor apartment building. The rope breaks when the piano is 30
GuDViN [60]

By solving the motion equations for the piano, we will see that they have 0.7 seconds to react.

<h3>How to find the motion equation for the piano.</h3>

So the piano is in a free fall from a height of 30m.

The motion equations will be given by:

  • The only force acting on the piano will be the gravitational one, thus the acceleration of the piano is the gravitational acceleration: a(t) = -9.8m/s^2 (Where the negative sign is because it is falling down).
  • To get the velocity we integrate over time, because the piano has no initial velocity, the constant of integration is zero: v(t) = (-9.8m/s^2)*t
  • To get the position equation we integrate again, here the initial position is 30 meters above the ground, so that will be our constant of integration: p(t) = (1/2)*(-9.8m/s^2)*t^2 + 30m

<h3>How long takes to fall?</h3>

We want to find the value of t such that the position is equal to zero, so we need to solve:

0 = (1/2)*(-9.8m/s^2)*t^2 + 30m

30m = (1/2)*(9.8m/s^2)*t^2

2*30m/(9.8m/s^2) = t^2

6.1 s^2 = t^2

√(6.1 s^2) = 2.5s = t

This means that the piano falls to the ground in 2.5 seconds.

But the workes notice it when the piano is 14 meters above the ground, it happens when:

p(t) = 14m =  (1/2)*(-9.8m/s^2)*t^2 + 30m

Solving that we get:

30m - 14m =  (1/2)*(9.8m/s^2)*t^2

2*16m/(9.8m/s^2) = t^2

3.27s^2 = t^2

√(3.27s^2) = t = 1.8s

So the piano falls in 2.5 seconds, and the works notice it 1.8 seconds after it starts falling, meaning that they have:

2.5 - 1.8 = 0.7 seconds to react.

If you want to learn more about motion equations, you can read:

brainly.com/question/2473092

4 0
2 years ago
Solve for x<br> 10 + 4x = 5(z - 6) + 33
gogolik [260]

Answer:

Step-by-step explanation:

X=5/4z - 7/4

5 0
3 years ago
Read 2 more answers
-6+8x=-38<br> What is the answer and explain how you got it step by step
Anarel [89]
-6 +8x = -38
8x = -32
x = -4
I did this by first adding 6 to both sides to get 8x by itself. I then divided by 8 to get x by itself. I remembered to use the - - + rule (Two negatives make a positive, a positive and a negative make a negative). Hope this helps!
3 0
3 years ago
Read 2 more answers
Show how you solve the following two equations: 6x = 33 2/3x=8/15
LuckyWell [14K]
6x = 33 x= 33/6. x= 5 3/6 = 5 1/3


2/3x=8/15= x= 8/15÷2/3 x= 8/15 x 3/2 = 24/30 = 4/5
4 0
3 years ago
Read 2 more answers
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