Answer:
One of the Numbers is -151 and the other is -144
Step-by-step explanation:
Set up the equations then solve
Answer:
her brother is 9
Step-by-step explanation:
21-3=18 18 divided by 2 = 9
add the 2 probabilities together:
0.297 + 0.423 = 0.72
Answer is C
Answer:
Step-by-step explanation:
Note that the quadratic formula has that "plus or minus" due to our taking the square root of some quantity. No square root is involved in the two formulas you've posed.
I have two suggestions here:
1) Write " (x plus or minus y)^2 = x^ plus or minus 2 times xy + y^2 " Note that a + on the left side corresponds to a + on the right side, and same with - .
2) Memorize these two formulas, which in most algebra textbooks you'll find in the section "special products and factoring."
Answer:
The opposite reciprocal of 1/3 is -3/1.
Step-by-step explanation:
To make the reciprocal of 1/3, simply flip the 1/3 over to make it 3/1.
