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Alex_Xolod [135]
3 years ago
12

a student throws a baseball with a speed of 8m/s and a kenetic energy of 25J.what is the mass of the baseball

Mathematics
1 answer:
Sophie [7]3 years ago
5 0
KE = 0.5mv^2

25 = 0.5 x m x 8^2

25 = 0.5 x m x 64

25 / 32 = m

Hope this helps! Sorry if it’s not right
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Henry runs 7 miles in 60 minutes. at the same rate, how many miles would he run in 24 minutes?​
victus00 [196]

Answer:

2.8 miles

Step-by-step explanation:

Divide 7 miles by 60=0.11666666666

Multiply it by 24

You would get 2.8

Hope this helped

:)

8 0
3 years ago
Square ABCD is shown below.
valentina_108 [34]

Answer:

35 is the length of BE

Step-by-step explanation:

2(2x + 5) = 8x - 50

4x + 10 = 8x -50

10+50 = 8x-4x

60= 4x

15 = x

2x + 5 = length of BE equal to length of DE

2(15) +5 = BE

30 +5

35 is the length of BE

6 0
3 years ago
0.6 of the Chang family expenses are for internet service what fraction of the family's expenses is for internet service put the
sattari [20]
0.6=6/10 so after simplifying you get 3/5, hope it helps !!
4 0
3 years ago
What statements about the graphs of these two functions are true?
tamaranim1 [39]

Answer:

B)Only one graph intersects the y-axis above y=0

Step-by-step explanation:

Both functions are in y=mx+b. The y-intercept  is b.

f(x) has the y-intercept 3. It intersects above y=0.

g(x) has the y-intercept -4. It intersects below y=0.

This means B is correct.


5 0
3 years ago
Marco can paddle his canoe at a rate of 6 miles per hour on unmoving water. However, today Marco is canoeing down (with the curr
Radda [10]

Answer:

S = v1 t1 = 7 t1    traveling downstream

S = v2 t2 = 5 t2    traveling upstream

7 t1 = 5 t2

7 (6 - t2) = 5 t2     since t1 + t2 = 6

42 - 7 t2 = 5 t2

t2 = 42 / 12 = 3.5 hrs so t1 = 2.5 hrs

S = 7 t1 = 7 * 2.5 = 17.5 mi

Also, S = 5 t2 = 5 * 3.5 = 17.5 mi

3 0
3 years ago
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