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chubhunter [2.5K]
3 years ago
8

I need all three answers fast pls

Mathematics
1 answer:
Zigmanuir [339]3 years ago
8 0

Answer:

Step-by-step explanation:

4. -3(2x + 6) = -6x - 18

5. -3x - 9= -3(x + 3)

6. 5x - 25y = 5(x - 5y)

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3 years ago
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two ferries start moving toward each other from opposite riverbanks, a and b. when they pass each other for the first time, the
Usimov [2.4K]

Let 'x' be the distance from THE far bank   where 700 is the distance to the NEAR bank

boat one has travelled 700    (rate = 700/unit time)         boat two has travelled   x    rate = x / unit time

boat one then travels   x  + 400  more      and boat two travels   700 + (700+x -400) more    when they meet

The time is the same      rate x time = distance      distance/rate = time     equate the distances divided by the respective rates

(700 + x + 400)/700     =    (  x  +  700     +  (700+x-400) )/x

1100x + x^2 = 1400x + 700000

x^2-300x -700000 = 0                         quadratic formula yields  x = 1000  

One boat travels 700   the other   1000 whe they first meet.....width of river =   700+ 1000 = 1700 m

3 0
3 years ago
The interior of a safe is shaped like a cube with edges 9 inches long. What is the volume of the interior of the safe?
fgiga [73]

Answer:

Assuming that all three sides are 9 inches then the answer should 729.

Step-by-step explanation:

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3 years ago
a 120 watt light bulb uses about 0.1 kilowatt of electricity per hour. if electricity costs 0.20 per kilowatt hour, how much doe
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A 120 watt light-bulb is a 0.120 kilowatt light bulb.

In one hour, it uses 0.120 kilowatt-hour of energy.

If electrical energy costs $0.20 per kilowatt hour, then that light bulb costs

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3 years ago
Sarah bought 96 pencils and 84 erasers to make gift bags for her friends.
Alexeev081 [22]

Answer:

C. 12

Step-by-step explanation:

the greatest common factor between 84 and 96 is 12

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3 years ago
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