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2 years ago

5.2x-y=4.1 1.5x+y=6.7 how to solve this problem

Mathematics

2 answers:

MrRa [10]2 years ago

8 0

Answer: x=1.6

y=4.2

Step-by-step explanation:

5.2x - y = 4.1

1.5x + y = 6.7

we will add both equations and you see that the y is getting cancelled

6.7x=10.8

x=10.8/6.7= 1.6

now in any equation we will replace x with 1.6

5.2(1.6)-y=4.1

8.3-y=4.1

-y= 4.1-8.3

-y=-4.2 multiply by -1

y=4.2

sesenic [268]2 years ago

4 0

Answer:

x = 1.61 (Estimated)

y = 4.28 (Estimated)

Step-by-step explanation:

5.2x - y = 4.1

1.5x + y = 6.7

5.2x − y = 4.1

−y = −5.2x + 4.1

y = 5.2x − 4.1

Solve for x:

1.5x + y = 6.7

1.5x + 5.2x − 4.1 = 6.7

6.7x − 4.1 = 6.7

6.7x = 10.8

x = 1.61194

Solve for y:

y = 5.2x − 4.1

y = 5.2 × 1.61194 − 4.1

y = 4.28209

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1 year ago

Makaila read 44 pages of her book yesterday and 2/3 of the book today. If she read a total of 200 pages in the past two days how

pogonyaev

Answer:

Total number of pages in the book is 234.

Step-by-step explanation:

Let us assume that the total number of pages in the book = x

Now, it is given that Makaila read 44 pages yesterday.

Also, Makaila read two-third of the book today. As we have assumed that, there are a total of x number of pages in the book, so we can say that Makaila read two-third of x number of pages today.

Number of pages read by Makaila today = $\frac{2}{3}\;of\;x=\frac{2}{3}\times\;x=\frac{2x}{3}$