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Stella [2.4K]
4 years ago
14

How long will it take a train traveling at 75mph to cover 30 miles

Mathematics
1 answer:
Thepotemich [5.8K]4 years ago
3 0
Rate times time equal distance

75*t=30
Divide both sides by 75.
40 minutes
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(x+0)(x-3)(x+0)(x+5)
pshichka [43]

Answer:

x^2 + 2x - 15

Step-by-step explanation:

(x-3)(x+5) = x^2 + 2x - 15

hope this helps, pls mark brainliest :D

3 0
3 years ago
What is the slope of the line in the graph? answer fast help plzzz
ziro4ka [17]

The slope can be found by using the slope formula.

Slope = y2 - y1 / x2 - x1

First, we need two points on the line.

(-1, 0) and (0, 1)

x1 = -1 and y1 = 0

x2 = 0 and y2 = 1

Let's plug these values into our slope formula.

(1 - 0) / (0 - (-1)) = 1 / 1 = 1

The slope is 1

4 0
3 years ago
The values of a,b, and c in scientific notation are 3.47 x 10^-6, 4.61 x 10^-7, and 5.52 x 10^-7, respectively. Complete the fol
Mars2501 [29]

Answer:

a)  1.59967 * 10 ^-12

b)    7.52711497

c)  1.590778098 * 10^-1

Step-by-step explanation:

a= 3.47 x 10^-6,

b=4.61 x 10^-7,

c=5.52 x 10^-7

a)  a*b =  3.47 x 10^-6* 4.61 x 10^-7

We multiply the numbers out front and add the exponents

        (3.47*4.61) * 10^(-6+-7)

        15.9967 * 10^-13

But this is not correct scientific notation, we need 1 number in front of the decimal.  Move the decimal 1 place to the left and add 1 to the exponent

1.59967 * 10^(-13+1)

1.59967 * 10 ^-12

b)   a/b = 3.47 x 10^-6/ 4.61 x 10^-7

We divide the numbers out front and subtract the exponents

        (3.47/4.61) * 10^(-6- -7)

         (3.47/4.61) * 10^(-6+7)

         .752711497* 10^1

But this is not correct scientific notation, we need 1 number in front of the decimal.  Move the decimal 1 place to the right and subtract 1 from the exponent

7.52711497* 10^1-1

7.52711497

c)  c/a = 5.52 x 10^-7/3.47 x 10^-6

We divide the numbers out front and subtract the exponents

        (5.52/3.47) * 10^(-7- -6)

        (5.52/3.47) * 10^(-7+6)

          1.590778098 * 10^-1

3 0
3 years ago
8 cm<br> 20 cm<br> 0 80<br> O 160<br> 0 28<br> O 40
Bond [772]
8x20=160
So your answer would be 160
6 0
3 years ago
Set of whole numbers from 1 to 15 set a all even numbers in the set​
LekaFEV [45]

Answer: 2,4,6,8,9,10,12,14.

Step-by-step explanation:might wanna double check that just incase

6 0
3 years ago
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