Answer:
x=1991/331
Step-by-step explanation:
Answer:
D.
Combination; number of ways = 10
Step-by-step explanation:
Permutation is when order matters
Combinations is when order doesn't matter.
Since there are two identical gift cards, it doesn't matter who gets the first gift card and who gets the second gift card, so this is a combination
There are 5 people choose 2
n!
--------
r!(n − r)!
where n is the number of items and r is how many we choose
5! 5*4*3*2*1
-------- = ------------------ = 10
2! (5-2)! 2*1 ( 3*2*1)
D.
Combination; number of ways = 10
Answer:
4 x (7-x)
Step-by-step explanation:
4 times (multiply) the difference (subtraction) of 7 and a number (seeing as how you don't know that number use a variable, x)
Answer:
C) -5/12
Step-by-step explanation:
To find the slope of a line with given points, you divide the difference of y-coordinates by the difference of the x-coordinates of those same 2 points.
x's:-9-3=-12
y's:-1-(-6)=5
Then, you put the answer of the y's in the numerator, and x's in the denominator, giving you 5/-12, but you can't have a negative in the denominator, moving it up to become -5/12 as the slope.
Estimate 3458092=3500000~; 57=60~.
3500000*60=210000000.
The answer is 210000000