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Debora [2.8K]
3 years ago
14

Find the value of Q in the following system so that the solution to the system

Mathematics
1 answer:
zalisa [80]3 years ago
3 0

Answer:

  Q = -6

Step-by-step explanation:

We assume your equations are ...

  • x -3y = 4
  • 2x +Qy = 8

If you multiply the first equation by 2, it becomes ...

  2x -6y = 8

In order for the solution to the system to match the first line, the second equation must be dependent on the first. That is, the second equation must match the one we just found. In order for that to be the case, we must have ...

  2x -6y = 8

  2x +Qy = 8   ⇒   Q = -6

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Squares have all equal sides so 10x4=40 40 ft is the answer
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Rico buys a rectangular rug to put on his living room floor. The rug is 8feet long and 6 feet wide. What is the area of the floo
olga nikolaevna [1]

Answer:

48 square feet

Step-by-step explanation:

A = length x width. (A =lw)

So, 8 x 6 = 48

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3 years ago
What is the las digit of the product of all the numbers between 11 and 29?
Tju [1.3M]

The last digit of the product of all the numbers between 11 and 29 is 0.

A product is something that has undergone one or more multiplications.

Here, we're looking for the final digit of the product of all whole numbers greater than 11 and less than 29.

Next, we have the product as: 12*13*14*15*16*17*18*19*20*21*22*23*24*25*26*27*28

Now take note of the 20 that is present.

Any number multiplied by 20 will result in a zero, so:

Product = 20*(12*13*14*15*16*17*18*19*21*22*23*24*25*26*27*28)

Using only that, we can infer that 0 represents the final digit in the product of all the numbers between 11 and 29.

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brainly.com/question/10873737

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4 0
2 years ago
Vita has a pice of rope that is 5 meters long. She cuts the rope into pieces that are each 1/3 meter long. How many pieces does
sp2606 [1]
Normally you would divide something like this by the cuts made. So if there were cuts of 2 inches on a 10 inch rope, then you should divide 10 by 2. It's the same with this:
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4 0
3 years ago
A number is divided by 4, and then the quotient is added to 17. The result is 25. Find the number
PolarNik [594]
Hello!!!

So we are given some number, which we will call x for simplicity purposes. They tell us that number is divided by 4 so x/4, and then 17 is added, so we now have x/4+17 and they tell us this combination is equal to 25 so set what we have so far equal to 25. So we have finally x/4+17=25. Now we just solve for x!

x/4+17=25 first we subtract 17 from both sides leaving us with, x/4=8 so now See need to multiply by 4 on both sides to clear the fraction and get x alone. So we have now

x=8*4 so x=32

Now we can check our answer by putting our value of x into equation and make sure it’s true. So we have for our check,

32/4+17=25 and 32/4 is 8 so we have 8+17=25 which is 25=25 so our equation is true and our answer is correct!!

Hope this helps you understand the concept!! Any questions please just ask!! Thank you so much!!
3 0
3 years ago
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