(- 2, - 3) is a solution to the given system of equations.
Answer: Option D
<u>Step-by-step explanation:</u>
Given equation are not presented in proper format. So, let assume the given system of are as below,
2 x - y = -1
2 x -4 y = 8
Now, subtract the second equation from the first, we get
(2 x - y) -(2 x - 4 y) = -1 -8
3 y = -9
y = -3 (obtained this when divide by 3)
Substituting y = - 3 into the first equation, we get
2 x - (-3) = - 1
2 x = - 1 + 3
x = - 2 (obtained when divide by 2)
Now, the answer is (x, y) = (- 2, - 3)
Answer:
Just took the test, its B
Step-by-step explanation:
The probability of matching three out of five numbers is 153/33649
The numbers are given as:
1 to 23
There are five matching numbers
The probability of getting a match is:
p = 5-k/n where k = 0, 1, 2
While the complement probability is
q = (n - 2)/n
Using the above formulas, the probability of getting from 5 is:
P = 5/23 * 4/22 * 3/21 * 18/20 * 17/19
Evaluate the product
P = 153/33649
Hence, the probability of matching three out of five numbers is 153/33649
Read more about probability at:
brainly.com/question/14290572
#SPJ1
19 orders of tea
57 orders of collee
find 1/4 of the 76
76/4=19
multiply by 3
19x3=57
Like terms: and , and , and
Not like terms: and , and , and
Two or more terms are called like terms if they have same variables and powers.
and are like terms because they have same variable y with same power 2.
and are not like terms because they have same variable y with different powers.
and are like terms because they have same variables kt with same power 1.
and are like terms because both are constant.
and are not like terms because one have variable and other is constant.
and are not like terms because they have different variables.