X+y = 2
(2*2 + 2*2)
(4 + 2*2)
(4 + 4)
= 8
Answer:
(D)x|x is a rational number.
Step-by-step explanation:
Given that:
The universal set, U is the set of rational numbers.
S is the set of integers.
Rational Numbers are numbers in the form , b≠0. They are denoted using ℚ.
The set of Integers on the other hand are the set of all positive and negative whole numbers inclusive of zero. They are denoted by ℝ.
Since the Universal Set is ℚ, the set S∈ℝ⊂ℚ (S is a Subset of the set of Rational Numbers). That is, every element in S is a rational number.
Therefore, every x in S is defined as:
x|x is a rational number.
Answer: 5h+4=A
Step-by-step explanation:
She gets five dollars an hour so for one hour she gets five dollars, for two hours she gets 2 times 5 dollars (10 dollars), for three hours she gets 3 times 5 dollars (15 dollars) etc...
Now replace the 1,2,3... with the variable representing the hour. In this case it would be h. So 5h=five dollars per hour. Because you only put the kid to bed once, you add four at the end
<span>The word problem gives a rate of oil consumption at a rate of 25 gallons per 3 hours and 45 minutes. 3 hours and 45 minutes can be displayed as 3.75 hours. so you can say the generator consumes oil at a rate of 25 gallons per 3.75 hours. The following equation give you the oil consumption on a per hour basis; 25/3.75 and that gives you 6.67 gallons per hour. In 6 hours the generator will consume 40 gallons.</span>
Answer:
12.50 + (7.5)(h-1) ≤ 50
6 hours or less
Step-by-step explanation:
The first hour is 12.50. Each additional hour is 7.50
Let h be the number of hours
12.50 + (7.5)(h-1)
We use h-1 since the first hour is 12.50
This must be less than or equal to 50
12.50 + (7.5)(h-1) ≤ 50
Now we solve the inequality
Subtract 12.50 from each side
12.50-12.50 + (7.5)(h-1) ≤ 50-12.50
(7.5)(h-1) ≤ 37.50
Divide by 7.5 on each side
(7.5)/7.5(h-1) ≤ 37.50/7.5
h-1 ≤ 5
Add 1 to each side
h-1+1 ≤ 5+1
h ≤ 6
We can only rent for 6 hours or less