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hjlf
3 years ago
8

A pitcher throws a 9 kg baseball in a straight line. Its momentum is 2.1 kg-m/s. What is the velocity of the

Mathematics
1 answer:
Zina [86]3 years ago
3 0

Answer:

0.23\:\mathrm{m/s}

Step-by-step explanation:

The momentum of an object is given by p=mv, where m is the mass of the object and v is the velocity of the object.

What we're given:

  • object's mass m
  • object's momentum p

Substituting given values, we can solve for v:

2.1=9v,\\v=\frac{2.1}{9}\approx \boxed{0.23\:\mathrm{m/s}}

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Jeremy bought x pounds of peanuts for $4.50 per pound and y pounds of cashews for $7.05 per pound at the store for a retirement
Black_prince [1.1K]
4.5x+7.05y=$43.65

x+y=8
Timed 4.5 for both side to get
4.5x+4.5y=36

4.5x+7.05y=43.65
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4.5x+4.5y=36
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2.55y=7.65
y=3 pounds
x=5 pounds. Hope it help!
7 0
3 years ago
The graph of f(x) = |x| is transformed to g(x) = |x + 1| – 7. On which interval is the function decreasing?
timofeeve [1]

Answer:

g is decreasing for all x less than or equal to -1

Step-by-step explanation:

The graph of the function y = |x| looks like a "vee."

g(x) = |x + 1| - 7 moves that graph 1 unit to the <u>left</u><em> </em>(I know, it looks backwards!) and down 7 units. See attached image.

Function g(x) is decreasing for all x \le -1.

5 0
3 years ago
Read 2 more answers
What's the answer to this?
beks73 [17]

Answer:

<em>Q'</em> = (-4, -2)

<em>R' </em>= (4, -2)

<em>S'</em> = (4, 2)

<em>T'</em> = (-4, 2)

Step-by-step explanation:

First, we can create a matrix to scale this rectangle by putting all the x coordinates in the top row and all the y coordinates in the bottom row and multiply it by 4.

Our initial matrix to multiply:

4\left[\begin{array}{cccc}-1&1&1&-1\\-2&-2&-1&-1\end{array}\right]

Moved to the origin:

4\left[\begin{array}{cccc}-1&1&1&-1\\-0.5&-0.5&0.5&0.5\end{array}\right]

Multiplied by four:

\left[\begin{array}{cccc}-4&4&4&-4\\-2&-2&2&2\end{array}\right]

This gives us the points of

<em>Q'</em> = (-4, -2)

<em>R' </em>= (4, -2)

<em>S'</em> = (4, 2)

<em>T'</em> = (-4, 2)

which are our answers.

3 0
2 years ago
PLEASE HURRY WILL GIVE BRANLIEST!!!
finlep [7]
I have concluded the answer is x=6.8
7 0
3 years ago
Make k the subject of 7k=4k/3t-11t
dimaraw [331]
Multiply 4k to 7k. Then divide 3t-11t by 7x4. Then square root the rest
6 0
3 years ago
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