34+0+18+26=78
Commutative property- I can switch around the numbers, instead of just adding it like-34+0+18+26 I can switch the numbers around- 34+18+26+0=78 and I still get the same product.
Also it is the sum not product.
7 x 50 rounding the second digit to the nearest 10 and then multiply 7 x 3 and add the two answers together 350 + 21 = 371
Answer: No, the answer is actually C
Step-by-step explanation: This is because of two simple reflection rules
1) In order to solve this, you first have to reflect point R across the y-axis. There is a rule that must be followed: (x,y) --> (-x,y)
This rule means that whatever was on the x side of the original point is now negative, but the y is left the same.
R(-2,9) --> R'(2,9)
2. The second step is to reflect the second point across the x-axis. Again, there is another simple rule to remember: (x,y) --> (x,-y)
This means that the x of the original point is kept the same, but the y value is now negative. To model this: **REMEMBER TO USE THE POINT FOUND IN STEP 1, SO R'(2,9), NOT R(-2,9)
R'(2,9) --> R''(2,-9)
FINAL ANSWER: C (2,-9)
To solve these problems, you simply need to memorize these rules.
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