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spin [16.1K]
3 years ago
13

Elimination method -2x-7y=13 and 3x+6y=15​

Mathematics
1 answer:
Sedbober [7]3 years ago
4 0

Answer:

The answer is (61/3), (-23/3)

Step-by-step explanation:

Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.

Hoped this helped!

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Product of (-4·3·2)2
just olya [345]

Answer:

-18

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
Please help me with this
Marat540 [252]

I'll just do red for now, but if you're very desperate I guess I'll help with a few more lol. It's just a lot of typing and my computer is at 6% :)

RATIO:

Ratios are another way of comparing things. It's almost like a fraction, except that it can look like x:y.

I'm guessing you're comparing all of the reds to the total amount, which should be 39. Put 5 in for x and 39 for y to make it look like 5:39.

DECIMAL:

Oh decimals are so fun...

Just divide 39 by 5. The answer to red's decimal is 7.8.

PERCENTAGE:

Percentage can come a little bit confusing to some people, so I'll explain this the best I can.

Basically, all you have to do to find it is divide the number you're making into a percentage by the total amount, then multiply it.

5/39 x 100

0.1282051282 x 100

12.8205128205

I'm going to the nearest hundredth which is 12.82.

Your percentage is %12.82

(If you're rounding to the nearest whole number, it'll be %13)

THEORETICAL:

For this simplify your ratio. 5/39 cannot simplify, so just leave it as 3/39.

Sorry, sometimes I come out a little confusing, so just try not to think too hard about what I'm trying to say if you're confused more lol. Anyway my computer is going to die so I'll go now :)

6 0
3 years ago
An expression that is equivalent to x4-y4
konstantin123 [22]
By factoring, we can get 4(x-y)
5 0
3 years ago
1
Likurg_2 [28]

Answer:

If something is a function, every x-value, only has one (1) y-value. If the line x = 0 intersects the graph in two points, there are to values for y (instead of one). Therefore the graph is not a function of x.

Your answer is A.

Step-by-step explanation: i did it

3 0
2 years ago
Canada has a population that is about 1/10 as large as the united states. If canadas population is about 32 million, about how m
Mice21 [21]
Call Canada's population c, and call the U.S. population u.

We see that c=\frac{u}{10}.  Substituting 32 million for c, we see that 32,000,000=\frac{u}{10}.  Multiplying by ten, we see that 320,000,000=u.  By using Algebra properly, we have ensured that the number of zeroes in our final answer is correct.
8 0
3 years ago
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