Answer:
1) 
2) 
3) see below
4) A: 0 = 1
Step-by-step explanation:
<u>Question 1</u>
<u>Question 2</u>
<u>Question 3</u>
subtract the second equation from the first
divide both sides by -4
substitute found value for y into first equation
solve for x
<u>Question 4</u>
Solution = A
Answer:
(2, 0)
There is one solution
Step-by-step explanation:
Given the set of equations
x+y = 2
2x+y = 4
Substract both equations
x - 2x = 2 - 4
-x = -2
Multiply thrugh by -1
-1(-x) = -1(-2)
x = 2
Substitute x = 2 into equation1 ;
From 1, x+y = 2
2 + y = 2
y = 2-2
y = 0
hence the solution to the system of equation is (2, 0). Hence there is only one solution
Increasing in orders of +7
Answer:
Step-by-step explanation:
(3065-104)/7
2961/7
423 miles per day
Answer:
6!=720
3! • 2!=12
Step-by-step explanation:
We must recall that the factorial of a number n (positive or zero) is the product of all the integers from n down to 1
n!= n(n-1)(n-2)...1
Let's evaluate the given expressions
6!=6\cdot 5\cdot 4\cdot 3\cdot 2\cdot 1=720
Similarly
3!\cdot 2!=(3\cdot 2\cdot 1)\cdot (2\cdot 1)=6\cdot 2=12
Finally
\displaystyle \frac{6!}{3!}=\frac{6\cdot 5\cdot 4\cdot 3\cdot 2\cdot 1}{3\cdot 2\cdot 1}
\displaystyle \frac{6!}{3!}= \frac{720}{6}=120
