You are completing ywr math homework of 16 problems. Yo complete 75% before. dinner. How many do yw have left to complete?
Answers
Answer:
4
Step-by-step explanation:
16/4 = 4
25% = 4
50% = 8
75% = 12
100% = 16
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A coin is tossed 10 times resulting in 7 heads and 3 tails. The same coin is tossed 1000 times resulting in 510 heads and 490 tails. What is the theoretical probability of getting heads with this coin?A. 51% B. 70% C. 50% D. 49%
Three machines A, B, and C produce respectively 50%, 30%, and 20% of the total number of items of a factory. The percentage of defective output of these machines is 3%, 4%, and 5% respectively. If an item is selected at random, find the probability that the item is non-defective.
Which expression is a difference of squares with a factor of 2x + 5? 4x2 + 10 4x2 – 10 4x2 + 25 4x2 – 25
Answers
Normally, I would pass right by this question, because it is so complicated
and there are so many numbers in it. But I've allowed myself to become
seduced by the bounty of a full 5 points waiting at the end of the rainbow,
and I decided to rush in where more reasonable people would rightly fear
to tread.
The answer is a number, that represents "after how many hours". So we
need to know how many hours AFTER WHAT. The question is not very
clear on when the beginning of time is, so I need to decide. I'm going to
say that the time when the bus leaves is the beginning of time. And I'm
going to call ' H ' the number of hours AFTER the bus leaves.
-- The bus covers 50 miles every hour. So 'H' hours after the bus leaves,
the bus is 50H miles away from the city, in some direction.
-- The car leaves 2 hours later. So 'H' hours after the bus leaves, the car
has only been traveling for (H-2) hours.
-- The car covers 70 miles every hour. So 'H' hours after the bus leaves,
the car is (70)x(H-2) miles away from the city, in the OTHER direction.
-- Since the bus and the car are moving in opposite directions, the distance
between the bus and the car is the SUM of the distances each one covers.
'H' hours after the bus leaves, they are (50H) plus (70)(H-2) miles apart.
What we need to figure out is: When is that distance 800 miles ?
The distance between them at 'H' hours after the bus leaves is
(50H) plus (70)(H-2) miles
Eliminate the first parentheses: 50H + (70)(H-2)
Eliminate the rest of the parentheses: 50H + 70H - 140
Combine the terms with 'H' in them: 120H - 140
So here's the equation: 120H - 140 = 800
Add 140 to each side: 120H = 940
Divide each side by 120 : H = 7.8333 hours
= 7 and 5/6 hours
= 7 hours and 50 minutes
after the bus leaves.
Check:
Assume that H = 7 hrs 50 minutes (7 and 5/6 hours)
The bus has covered (50 x 7-5/6) = 391 and 2/3 miles.
The car has been traveling for only 5 and 5/6 hours
The car has covered (70) x (5-5/6) = 408 and 1/3 miles
How far apart are they ? (391-2/3) + (408-1/3) = 800 miles ! YAY!
Note: If the book or the homework sheet wants to count the hours
after the CAR leaves, then the answer is 5-5/6 hours, not 7-5/6 .
2^3=4^p
Answers
Answer:
p = 3/2
Step-by-step explanation:
2^3 = 4^p
Apply exponent rules:
3 = 2p
Divide 2 from both sides:
3/2 = p
p = 3/2
b.Solve the equation. Show your work.
Answers
Four less than half a number is equal to 37 less than twice the number.
Four less than half n is equal to 37 less than twice n
Four less than
solve urself
(1 point)
h = 6w + 4
h = 4w + 6
h = 4w
h = 4w – 6
Answers
.,.,.,.,
Answers
(a,b,c are right triangle sides)
Answers
Answer:
Living in an exile aisle.
Step-by-step explanation:
The letter "X" is the 24 th letter of the English alphabet. The term X denotes the "exile" aisle.