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Alina [70]
3 years ago
13

Dami works 4 times as many hours per week as Cooler. Together they work a total of 49 h One week. Find the number of hours worke

d by each person
Mathematics
1 answer:
Ahat [919]3 years ago
8 0

Answer:

Cooler - 9.8 hours   |   Dami - 39.2 hours

Step-by-step explanation:

If Dami works 4 times as much as Cooler, and Cooler works x hours every week, then Dami works 4*x hours every week, or 4x. Since the combined time they work is 49 hours, we can represent this in the equation 4x+x=49, or 5x=49. Dividing both sides by 5 we get x=9.8.

Since Cooler works x hours every week, he worked for 9.8 hours. And since Dami works 4x hours every week, she worked 4*9.8 hours=39.2 hours.

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Solve the system of equations by graphing.
valentinak56 [21]
The answer is A.

The way you know this is by graphing the first function.

The second function is in a different format, so you just have to isolate Y. 

-1/3x + y = -1
y= 1/3x -1  OR y= -1 + 1/3x

both of the functions have the same slope, but different y-intercepts. therefore, they'll never touch. making them infinite solutions.

it's also A because both of the slopes are positive, the slopes in graph D are negative.

So, the answer is A.

Hope this helps! xx


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3 years ago
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Assoli18 [71]

Answer:

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9514 1404 393

Answer:

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Step-by-step explanation:

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Let m = 0i +1j +ak. Then we require ...

  m·p = 0 = 0×1 +1×2 +a(-2)   ⇒   0 = 2 -2a   ⇒   a = 1

m = 0i +1j +1k

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boyakko [2]

good morning,

Answer:

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:)

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