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kvasek [131]
3 years ago
6

2x-y=-1 3x-y=2 in simultaneous equations

Mathematics
2 answers:
zloy xaker [14]3 years ago
8 0

Answer:

Let's solve for x.

2x−y=−13x−y

Step 1: Add 13x to both sides.

2x−y+13x=−13x−y+13x

15x−y=−y

Step 2: Add y to both sides.

15x−y+y=−y+y

15x=0

Step 3: Divide both sides by 15.

15x

15

=

0

15

x=0

Answer:

x=0

Step-by-step explanation:

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GaryK [48]3 years ago
6 0

Answer:

{x,y}={3,7}

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How is multiplication and division related?
Julli [10]
Hey You!

The two are related because they both use the same three numbers. For example:

6 × 3 = 18 3 × 6 = 18

Or,

18 ÷ 3 = 6 18 ÷ 6 = 3
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3 years ago
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The biology faculty at a college consists of 8 professors, 11 asscociate professors , 12 assistant professors and 4 instructors.
vodka [1.7K]

Answer:

0.343

Step-by-step explanation:

First, find the different ways one can chose a professor or instructor. In this case, there are 8 professors and 4 instructors. So there are a total of 12 ways you can choose a professor or instructor.

Second, you want to find the different ways you can choose any member of the faculty. In this example, since you are only choosing one person, then you just find the total number of people in the faculty, which is 8 + 11 + 12 + 4 = 35.

Third, all you do is divide the different ways you can get a professor or instructor by the total different ways you can choose. So it's 12/35, or 0.343.

7 0
3 years ago
Flynn has $4 worth of quarters.
ANTONII [103]

Answer:

16 quarters

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Flynn has 16 quarters.

5 0
2 years ago
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Please Help 6th Grade Math! Box Plots! 2 questions (Image attached)​
tangare [24]

Answer:

First answer is 14

Second answer is 25

Step-by-step explanation:

Median is the middle ( 1 2 3 4 5 the median would be 3)

You start at 2 and end at 27

List all the numbers from 2 to 27 and come from both ends until you get to the middle number(s)

In this case there are two 14 & 15

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Since there are no decimal answers you are left with 14

Range you take the two end numbers and subtract them (27 & 2)

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Hopefully this helps!

4 0
3 years ago
Aaron and noah wanted to have a contest to see which of their paper airplanes could fly the longest distance. Aaron's plane flew
Marina CMI [18]

Aaron's plane flew 3.21 meters further than Noah's plane.

<u><em>Explanation</em></u>

Aaron's plane flew 4 meters and Noah's plane flew 79 centimeters.

So, first we need to <u>convert 79 centimeters into meters</u>.

We know that, 1 centimeter = 0.01 meter

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Now, the difference of distance between Aaron's plane and Noah's plane is (4-0.79) meters = 3.21 meters

3 0
4 years ago
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