Answer:
b. Yes
c. No
d. No
e. Yes
Step-by-step explanation:
hope this helped
Answer:
37. {-1, -1}.
Step-by-step explanation:
I'll solve the first one . The other can be solved in a similar way. We can use the method of elimination.
x1 - x2 = 0
3x1 - 2x2 = -1
We can multiply the first equation by -2. We then have an equation containing + 2x2 so when we add this to the second equation the 2x2 will be eliminated
So the first equation becomes:
-2x1 + 2x2 = 0 Bring down the second equation:
3x1 - 2x2 = -1 Now adding, we get:
x1 + 0 = -1
so x1 = -1.
Now we substitute this value of x1 in the original first equation:
-1 - x2 = 0
-1 = x2
x2 = -1.
So the solution set is {-1, -1}.
If there are more than 2 equations you can use a combination of substitutions and eliminations.
Answer:
Step-by-step explanation:
Firstly convert each number into an improper fraction. 2 1/4 would become: 9/4 (because we multiply 2 and 4 and plus the numerator, to get the numerator and keep the denominator the same). Do this to all the numbers then multiply the numerator by the numerator and the denominator by the denominator. simplify normally and convert to a mixed number.
Answer:
May I have a photo?
Step-by-step explanation:
