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Tamiku [17]
3 years ago
12

X-y=2x² -7y² = 2decide the system​

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
7 0
Wish I can help my g
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The ANSWERS and how to get them
Nookie1986 [14]

Answer: The answers for question 3 are x = 5, y = 13, and z = 10.

Now for question #4.  The answer for those are a = 6.40312, b = 6.70820, c = 9.43398, d = 5.29150, e = 4.89898, f = 7.54983.

You would solve all these problems by using this formula a^2 + b^2 = c^2 with a and b representing two of the legs and c representing the hypotenuse (the longest side.)  Simply input the respective numbers for the appropriate variables and solve for the missing variable.

Now lastly question #5.  We just need to solve for the diagonal length.  The answers are as follows.  5.66, 7.07, and 9.9.  You get these answers by using the formula for finding a diagonal in a square which is d=\sqrt{}2a

6 0
4 years ago
Find the solution of the initial value problem 2y−3y+y=0
tatuchka [14]
2y - 3y + y = 0

-y + y = 0

0 = 0

Hence, y has infinite possibilities of value since the equation is true without there being any use of y in it.

Hence, y could be any value.<span />
7 0
3 years ago
Find the probability.
kvv77 [185]

Answer:

7/36

Step-by-step explanation:

1 die has 6 faces

When two dice are rolled, the total number of outcomes

= 6 × 6 = 36

The Probability of having(5) =

(1 & 4), (2 & 3) , ( 3 & 2), (4 & 1)

= 4

The probability of having (10) =

(5 & 5), (4 & 6) , ( 6 & 4)

= 3

The probability that the score on the dice is either 5 or 10.

P(5) + P(10)

= 4/36 + 3/36

= 7/36

8 0
3 years ago
(-9) to the 2nd power
yKpoI14uk [10]
81

(-9)(-9) is 81

Multiplying two negatives gives a positive
5 0
3 years ago
Read 2 more answers
I thought of a number, multiplied it by 2 1/2, divided the result by 1 1/5, subtracted 7/18 from it, and got 1 5/6. What was my
Svetradugi [14.3K]
1 and 1/15

Work backwards, so add 7/18 to 1 5/6 first (I'm gonna add them in improper fraction form to make it easier) and you get 40/18 which is 20/9
Then multiply by 1 1/5 (or 6/5) to get 120/45 which simplifies to 8/3
Then divide by 2 1/2, or 5/2, which means you multiply by the reciprocal (2/5)
8/3 times 2/5 equals 16/15 or 1 1/15
7 0
3 years ago
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