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patriot [66]
3 years ago
11

What is the value of k if the line 5x+ky=12 passes through the point (2,-1).

Mathematics
1 answer:
olchik [2.2K]3 years ago
5 0

Answer:

k = -2

Step-by-step explanation:

1. Substitute the point (2,-1) into the given equation 5x+ky=12. The first number is 2, the x-value. The second number is -1, the y-value.

5x + ky = 12

5(2) + k(-1) = 12

2. Simplify

5(2) + k(-1) = 12

10 + (-k) = 12

10 - k = 12

2. Isolate k

10 - k = 12

-k = 12-10

-k = 2   <= here multiply both sides by (-1)

k = -2

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geniusboy [140]

Answer:

£72

Step-by-step explanation:

So here you basically want to take to total amount earned and divide it by the amount of days worked and you should get your daily amount paid. (360/5=72)

5 0
3 years ago
111 1/10+ 496 1/10 is approximately
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111+496= 607
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But if youre just doing an approximate answer then...

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So it would be 610

You can make 2/10 to 1/5 but that wouldnt be approx.

Your answer should be 610 and 2/10
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3 years ago
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4 years ago
there are students in a school. This number is 15% more than it was last year. Calculate the number of students last year
ANTONII [103]

Answer: See explanation

Step-by-step explanation:

Your question isn't complete but let's help out by giving some values to the question.

Let's say there are 230 students in a school. This number is 15% more than it was last year. Calculate the number of students last year.

Let the number of students last year be x.

Since there's a 15% increase, this implies that (100% + 15%) = 115% of x equals to 230. This will be:

115% of x = 230

115% × x = 230

115/100 × x = 230

1.15x = 230

x = 230/1.15

x = 200

There were 200 students last year.

Just assign the missing values and use the above method and you'll get your answer.

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