Answer:
a. c
b. b
Step-by-step explanation:
a. To the right of means adding 7 and the original point is 1 so the answer is 1+7
b. To the left of means adding -7 and the original point is 1 so the answer is 1 + (-7)
Consider a set M, and an operation *.
Let a and b be in M, then M is closed under operation * if :
a*b, and b*a produce an element of M
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The set of negative numbers (set M) is not closed under subtraction (the operation *).
Consider 2 numbers a=-9 and b=-6 which certainly are in M.
-9*(-6) = -9-(-6)=-9+6=-3 ∈ M (note that * is the regular subtraction -)
(-6)*(-9)=-6-(-9)=-6+9=3 ∉ M
Answer:
53
Step-by-step explanation:
(7)(2)+3((4)(2)+3+2)
The interval notation of the graph is [-1, 3).
The -1 has a closed circle, which means that -1 as an endpoint is included.
3 has an open circle to it, which implies that it is not included as an endpoint.
The interval can also be expressed as:
-1 ≤ x < 3
Answer:
17/20
Step-by-step explanation:
3/4 + 4/5 - 7/10
1. Find the LCD (Least Common Denominator). The LCD is 20.
2. 20/4=5. 5*3=15. So, 3/4 becomes 15/20.
3. 20/5=4. 4*4=16. So, 4/5 becomes 16/20.
4. 20/10=2. 2*7=14. So, 7/10 becomes 14/20.
5. Your new equation is 15/20 + 16/20 - 14/20.
6. Solve from left to right.
7. 15/20 + 16/20= 31/20.
8. 31/20 - 14/20= 17/20.