Answer:
a. 16
b. 26
c. (11,13) and (17,19)
d. 3,8,12
Step-by-step explanation:
1. 2x8 = 16, sum of 1 +6 ( 2 digits)= 7
2. 2+3+5+7+11= 28
3. 10 to 20 ( 11,13,17,19) so we can make a pair that has difference of 2 like (11,13)
4. I will attach
Find the difference between points P (4,6) and Q (8,9)
1 answer:
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Using substitution:
first you have to express one variable in terms of the other, in this we can express y in terms of x:
Since both expressions are equal to y, you have to equal both expressions like this:
Now you can solve the equation:
Knowing x=10, you can use any of the expressions we found before to find y. In this case I'm going to use y= -x+9 because it's simpler but boy should give you the same result
So, the answer is x=10 and y=-1
first you have to express one variable in terms of the other, in this we can express y in terms of x:
Since both expressions are equal to y, you have to equal both expressions like this:
Now you can solve the equation:
Knowing x=10, you can use any of the expressions we found before to find y. In this case I'm going to use y= -x+9 because it's simpler but boy should give you the same result
So, the answer is x=10 and y=-1