Answer:
let t= the number of tacos sold
let b= the number of burritos sold
3.25t+7b=552
b=2t
Step-by-step explanation:
Since there were twice as many burrito sold as tacos sold, there were more burritos sold, so if we multiply by 2 the number of tacos sold, we will get the number of burritos sold, meaning b=2t.
Lovely.
The car is traveling at 95 km/h, and the train is at 75 km/h.
Remember the train is 1 km long.
a)
With respect to the train the car is not moving as much as 75 km/h.
The car with respect to the train is moving as much as 95 - 75 = 20 km/h
Recall the train is 1 km long.
Time to cover the 1km long train = Distance / speed = 1 / 20 = (1/20) hour.
= (1/20)*60 minutes = 3 minutes.
So the car would pass the train in 3 minutes.
b)
Now if they are traveling in opposite directions;
the car with respect to the train = 75 + 95 = 170 km/h
Time to cover the 1km long train = Distance / speed = 1 / 170 = (1/170) hour.
<span>= (1/170)*60 minutes = (6/17) minutes
</span>
= (6/17)*60 seconds = 360/17 seconds ≈ 21.176 seconds.
Answer:
a ∈ ℝ
Step-by-step explanation:
The statement is true for any value of a
since both members are identical
Answer:
B
Step-by-step explanation:
What is required is the probability of selecting one orange and one black kitten.
outcomes ( 1 O and 1B) = 4C1 * 5C1
Total outcomes = 9C2
Note: the order of color does not matter it is simply a matter of selection hence only combinations are made NOT permutations.
P (1O and 1B) = outcomes ( 1 O and 1B) / Total outcomes
P (1O and 1B) = (4C1 * 5C4) / 9C2 = 0.5556
3X -3 => 9
3X => 9+3
3X => 12
3X/3 => 12/3
X => 4
tell me if you don't understand