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12345 [234]
3 years ago
9

A dog and a cat are 200 meters apart when they see each other. The dog can run at a speed of 30 meters per second, while the cat

can run at a speed of 24 meters per second. How soon will the cat catch the dog if the cat starts running after the dog?
Mathematics
1 answer:
fredd [130]3 years ago
6 0

Answer:

I think after 1.6 s it Will catch the dog

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Find the equation of the line through the points (-2,1) and (5,-20)
ankoles [38]

Answer:

y = -3x - 5

Step-by-step explanation:

First find the slope:  (-20 - 1) / (5 - (-2))  = -3

Then plug in one set of points into the equation y = mx + b.

1 = -3(-2) + b

1 = 6 + b

b = -5

So you can get the equation:  y = -3x - 5

5 0
3 years ago
Find the equation of the slope.
shusha [124]

Answer:

y=mx+b

Step-by-step explanation:

5 0
3 years ago
Suppose the first comic book of a classic series was sold in 1954. in 2015, the estimated price for this comic book in good cond
lukranit [14]
1954 to 2015 = 61 years

310,000 = x*(1.22)^61

where x i original price

x = 310,000 / <span> <span> <span> 185,33</span></span></span>2

x = <span><span><span>1.67

Original price = 1.67 which seems a little high, but that's my answer.


x = </span></span></span><span><span>12.22
</span> </span>

3 0
3 years ago
The mean length of 10 childrens' big finger is 8.1cm.
sergiy2304 [10]

Answer:

  • The mean length of 10 children's big finger is 8.1 cm

Average length of all the 10 children's finger is (8.1×10) cm = 81 cm.

  • The mean length of 11 adult's big finger is 14.1 cm

Average length of all the 11 adult's big finger is (14.1×11) cm =155.1

  • Mean length of these 21 people's big finger is
  • \frac{(81 + 155.1)}{21}  = 11.242857
  • Hence, <em><u>11.24</u></em> is the right answer.
8 0
3 years ago
How to solve for 40! / 10!30!
nlexa [21]
40! / 30!  = 40*39*38*37*36*35*34*33*32*31

dividing this by 10!   10*9*8*7*6*5*4*3*2*1

 =    4*13*19*37*17*11*4*31

=      847,660,528
     
         
         
3 0
3 years ago
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