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creativ13 [48]
3 years ago
15

PLEASE HELP!

Mathematics
2 answers:
PSYCHO15rus [73]3 years ago
6 0
See photo for solution and mark me as brainliest if you think i helped!

Anika [276]3 years ago
3 0

Answer:

k=-7/5

Step-by-step explanation:

you have the point A(5,6)

from this point we know that: x=5 and y=6

so we must substitute this into the equation 2y+kx=5, and this is how we will find which value of k makes true that the point (5,6) belongs to the graph.

So substituting x=5 and y=6:

2y+kx=5\\2(6)+k(5)=5\\12+5k=5\\

and we clear for the variable k:

5k=5-12\\5k=-7

and thus, k is:

k=-7/5

the value for k must be -7/5.

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What is the rise over run for the slope -11/9
Igoryamba

Answer:  11 down and 9 right

<u>Step-by-step explanation:</u>

Slope IS rise over run where the top number of the fraction (numerator) determines the vertical distance --> positive is up, negative is down

and the bottom number of the fraction (denominator) determines the horizontal distance --> positive is right, negative is left.

Given slope = -11/9

the numerator is -11 so the "rise" is  DOWN 11 units

the denominator is 9 so the "run" is RIGHT 9 units

7 0
3 years ago
What to pieces of information do you need to notify the equation of a line
Butoxors [25]

Answer:

The slope and the y-intercept when you’re in y-intercept form.


4 0
3 years ago
How would 3,050,000 be expressed in scientific notation?
sergejj [24]
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5 0
3 years ago
Jerome burns 4 cal/min walking and 10 cal/min running. He walks between 10 and 20 min each day and runs between 30 and 45 min ea
erik [133]

Answer:

20 minutes should spend on walking and 30 minutes on running.

Step-by-step explanation:

Let x represents the minutes spent on walking and y represents the minutes spent on running,

∵ He burns 4 cal/min walking and 10 cal/min running,

So, the total calories burnt,

Z = 4x + 10y

Which has to be maximised.

Now, he walks between 10 and 20 min each day,

i.e. 10 < x < 20,

Also, he runs between 30 and 45 min each day,

i.e. 30 <  y < 45,

By graphing 10 < x < 20 and 30 <  y < 45,

We obtained the vertices of feasible region,

(10, 45), (20, 45), (10, 30) and (20, 30)

At (10, 45),

Z = 4(10) + 10(45) = 40 + 450 = 490,

At (20, 45),

Z = 4(20) + 10(45) = 80 + 450 = 530,

At (10, 30),

Z = 4(10) + 10(30) = 40 + 300 = 340,

At (20, 30)

Z = 4(20) + 10(30) = 80 + 300 = 380

Hence, maximum calories is 530 when 20 minutes spent on walking and 30 minutes spent on running.

5 0
3 years ago
20 points!!!!
valentinak56 [21]
No, because the sample was not random
8 0
3 years ago
Read 2 more answers
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