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chubhunter [2.5K]
3 years ago
9

Light travels about 186,000 mi/s, the function d(t)=186,000 gives the distance in miles that light travels in T seconds , how fa

r does light travel in thirty seconds .
Mathematics
1 answer:
I am Lyosha [343]3 years ago
4 0
Light travels 5,580,000 mi/s in thirty seconds
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last month , he sold 50 chickens and 30 ducks for $550 . This month , he sold 44 chickens and 36 ducks for $532. How much does a
Kazeer [188]
Hello there, my fellow human being!
So, the chicken costs $8 and the duck costs $5, here's why.

Let's say x is the cost of a chicken while y is the cost of a duck.
We can make two linear equations using the information above.
Last month, he sold 50 chickens and 30 ducks for $550: 50x + 30y= 550
This month, he sold 44 chicken and 36 ducks for $532: 44x + 36y = 532

50x/10 + 30y/10 = 440/10
44x/4 + 36y/4 = 532/4

5x + 3y = 44
11x + 9y = 133

So, now that we have our answer simplified, we have to use elimination to solve this system of equations. But, first we need to make sure that at least one of our variables is able to be canceled out.
Let's multiply this equation by -3.
(5x + 3y = 44) * -3.

-15x-9y=-165.

11x + 9y = 133
-15x - 9y = -165
______________
-4x/4 = -32/4
x = 8
11x + 9y = 133
11(8) + 9y = 133
88 + 9y = 133
-88 -88
________________
9y/9 = 45/9
y = 5.
4 0
3 years ago
Read 2 more answers
I DESPERATELY NEED HELP PLZ ANSWER THESE QUESTIONS I AM TIMED AND DON"T HAVE MUCH TIME LEFT
Marina CMI [18]

Answer:

Ok I will help you answer the first one the rest yourself?

Step-by-step explanation:

So the question is

6(r-s+t)

we have to time each number by 6

6r-6s+6t

That's how we can simply so the answer is 6r-6s+t

Same thing goes with the others

Hope it helps 0w0

5 0
3 years ago
Edna earns $6 for each hour of yard work. How many hours in all will it take Edna to earn<br> $42?
madreJ [45]

Answer:

42 divided by 6=7 so 7 hrs

Step-by-step explanation:

its probalay wrong im not smart lol

5 0
2 years ago
Read 2 more answers
HELPPPPPP pleeeeease
dusya [7]

Answer: x = 2 Hope this helps, please consider making me Brainliest.

Step-by-step explanation:

Let's solve for x:

4x + 6 + 2x = 18

4x + 2x = 12

6x = 12

x = 2

Hope this helps, please consider making me Brainliest.

8 0
2 years ago
Read 2 more answers
How do you solve this algebraic equation? X-5=0.1 (x+5)
Damm [24]

Answer:

5

Step-by-step explanation:

so X-5=0.1 (x+5)

x is 5    

+ 5-5=0.1

8 0
3 years ago
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