We must plugin values:
3(7)-4(0)=21, is CORRECT since 7•3 is 21 and -4•0 is 0
3(11)-4(3)=21 is CORRECT since 3•11=33 and -4•3=-12 so 33-12=21
3(-3)-4(3)=21 is INCORRECT since 3•-3 is -9 and -4•3 is -12, -9-12 is -21
3(-1)-4(-6)=21 is CORRECT since 3•-1 is -3 and -4•-6 is 24 and so 24-3=21
Answer:
Z(integer)
Step-by-step explanation:
N is subset of W
W is subset of Z
Z is subset of Q
Q and Q* are subset of R
Answer:
5:15
Step-by-step explanation:
The shorter "leg" show the hour and the longer "leg" shows the minutes. The minutes around the clock goes by 5s.
ANSWER
A. 1/9
EXPLANATION
When we have an expression with a negative exponent we can solve it by "flipping" the fraction and solving with the positive exponent:
In this problem we have to find:
We can think of a whole number as a fraction whose denominator is 1:
So we can use the trick:
And solve:
