What is the percent of increase for a population that changed from 438,000 to 561,000?
Answers
438000 ------------ 100%
561000 ------------ x
Crossmultiply now
438000*x=561000*100%
438000x=56100000 /:438000 (divide both sides by 438000)
x=128%
Finally we have to subtract 128%-100%=28% to get percent of increase.
The answer is 28%.
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a) y=3x+4 y=—3x+4
Answers
Answer:
They are not parallel. they would have to have the same slope to be parallel.
Step-by-step explanation:
Answers
divide second equation by 2 for simplificy
2x-y=8
oh dear, we got the same equation
therefor they are the same line
infinitely many points
anywhere on the line 2x-y=8
some points are
(4,0)
(5,2)
anywhere on the line 2x-y=8
3. In a game, if you roll a 6 on a 6-sided number cube, you lose a turn.
(a) What is the probability that you roll a 6? Explain your reasoning.
(b) What is the probability that you either roll a 6 or do not roll a 6? Explain your reasoning.
(c) What is the probability that you don't roll a 6? Explain your reasoning.
Answer.
Answers
Answer:
(a) What is the probability that you roll a 6?
1/6
(b) What is the probability that you either roll a 6 or do not roll a 6?
1
(c) What is the probability that you don't roll a 6?
5/6
Step-by-step explanation:
(a) What is the probability that you roll a 6?
In a 6- sided cube, a 6 occurs only once. That is only one face is labelled 6. Therefore, the probability that you roll a 6 is;
(number of faces labelled 6)/(totals number of sides) = 1/6
(b) What is the probability that you either roll a 6 or do not roll a 6?
The probability of rolling a 6 was found to be, 1/6.
On the other hand, the probability of not rolling a 6 is;
(number of faces not labelled 6)/(totals number of sides) = 5/6
Therefore, the probability that you either roll a 6 or do not roll a 6 is;
1/6 + 5/6 = 1
These two events are mutually exclusive and exhaustive.
(c) What is the probability that you don't roll a 6?
The probability of not rolling a 6 is;
(number of faces not labelled 6)/(totals number of sides) = 5/6
We have 5 faces not labelled 6 out of 6 possible faces or outcomes
Answers
Answer:
Step-by-step explanation:
A number to 1/5 is the
A number to 1/3 is the
So, since the number is 15 to the 1/5, it is
Answer:
Answer:
Step-by-step explanation:
recall that
if we apply this to our case,
Answers
Do you remember hearing that the angles of every triangle in the world
all add up to the same number ? They always add up to 180 degrees.
If you know the measures of two of the angles, then just take those away
(subtract) from 180 degrees, and whatever you have left must be the last angle.
For example, let's take the last one on your list:
54 and 36 are given.
180 minus 54 = 126
then
126 minus 36 = 90 . . ==> the missing angle is 90 degrees
===================================================
Another way to do it: One addition and one subtraction.
(54 + 36) = 90 That's the total amount you have to take away from 180.
180 minus 90 = 90 <== that's the missing angle.
REMEMBER I AM SOLVING FOR BOTH X AND Y ASAP I DO NOT HAVE TIME
Answers
x + 2y = 13
(x + 2y) - 2y = 13 - 2y
x = 13 - 2y
-3(13 - 2y) + 3y = 24
-39 + 6y + 3y = 24
9y - 39 = 24
(9y - 39) + 39 = 24 + 39
9y = 63
9y ÷ 9 = 63 ÷ 9
y = 7
x + 2y = 13
x + 2(7) = 13
x + 14 = 13
(x + 14) - 14 = 13 - 14
x = -1
When x = -1
y = 7
An easy way to check:
-3x + 3y = 24
-3(-1) + 3(7) = 24
3 + 21 = 24
24 = 24
Since it is the same on both sides, our answers are correct.