Answer:
4x and -2x
Step-by-step explanation:
They have 2 of the same variable unlike the others
Answer:
Two negative charges will not attract each other.
Step-by-step explanation:
According to the law of electrostatic induction, it states that "Like charges repel, unlike charges attracts.
Charges can either be positive or negative. For the charges to repel, charges with the same sign must be brought together e.g positive-positve or negative-negative.
For the charges to attract, charges with different sign must be brought together e.g positive-negative or negative-positive.
Based on the conclusion above, it can be seen that the table is incorrect because two negatively charged particle will always repel not attract.
Answer:
In the case of 70 mph, time would be 105/70 or 1.5 hours (90 minutes).
Ok, so we need to set up a system of equations.
x + y = 19, where x is notebooks and y is pencils
2.2x + 1.09y = 30.70. You use the coefficient for individual prices and the total for the total given.
2.2x + 2.2y = 41.8 (multiply for elimination later)
2.2x + 1.09y = 30.7
1.11y = 11.1
y = 11.1/1.11
y = 10
Now we use the substitution method in x + y = 19
x + 10 = 19
x = 9
9 notebooks and 10 pencils
$108
Step-by-step explanation:
If 48 hats costs $192;
Then 1 hats would cost $4.
So therefore 27 hats would cost $108 i.e. 27 times $4
