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mote1985 [20]
3 years ago
14

Solve the system of linear equations by adding or subtracting. Show all work!

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
4 0

Answer:

x = -2, y = -2

Step-by-step explanation:

Your goal is to try and cancel out a variable. I want to get rid of y so i subtracted the first equation from the second one.

After that I solve for x and got x=-2.

I used x=-2 and plugged it back into either of the equation to solve for y.

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Natali5045456 [20]

Answer:

19 over 228

Step-by-step explanation:

7 0
3 years ago
You are dealt two cards successively without replacement from a standard deck of 52 playing cards. Find the probability that the
kondaur [170]

Answer:

\frac{4}{52} \times \frac{4}{51}  = \frac{16}{2652} = 0.00603 = 0.603\%

Step-by-step explanation:

There are 52 cards in a standard deck, and there are 4 suits for each card. Therefore there are 4 twos and 4 tens.

At first we have 52 cards to choose from, and we need to get 1 of the 4 twos, therefore the probability is just

\frac{4}{52}

After we've chosen a two, we need to choose one of the 4 tens. But remember that we're now choosing out of a deck of just 51 cards, since one card was removed. Therefore the probability is

\frac{4}{51}

Now to get the total probability we need to multiply the two probabilities together

\frac{4}{52} \times \frac{4}{51}  = \frac{16}{2652} = 0.00603 = 0.603\%

5 0
4 years ago
Shane worked 8 hours per day for 3 days. Andrew worked 6 hours per day for 4 days. If the normal working week is 36 hours, which
creativ13 [48]
Shane:
8 x 3 = 24 Because it is 8h per day for 3 days. Per is like times
24h out of 36  24/36 GCF is 12 divide to and bottom by 12
24 / 12 is 2   36 / 12 is 3  2/3    Shane worked for 2/3 of 36h
Percentage: 100% / 3 (because there is 3 parts)= 33.333333333333 
33.33333333333 x 2 (because it is there is 2 parts needed) = 66.6666666666%
Shane has worked for 66.6666666666% of 36 hours
 
 Andrew:
 4 x 6 = 24 
Hey did you realise, the 24 is exactly the same! So the fraction would still be 2/3 of 36, and so on, there percentage is still the same, it's still 66.6666666666%

Answer: Both of Andrew and Shane has worked for the exact same time, therefore they have the exact same percentage         <span />
4 0
3 years ago
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The equation of a circle is (x - 4)2 + (y - 4)2 = 9. The point (4, 1) is on the circle.
Alika [10]

Answer:

4

Step-by-step explanation:

the answer is 4 hope it helps

3 0
2 years ago
6 divided by 885 what is the answer?
kolezko [41]
142.5 is the Answer
5 0
3 years ago
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