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:
1303.45 cm
Step-by-step explanation:
The triangles formed by a rod and its shadow and a tree and its shadow are similar triangles, so the ratios of their heights to the lengths of their shadows are equal.
Let x be the height of the tree. Setting the ratios equal, we get:
180/116 = x/840
Solve for x:
x = 840 * (180/116)
x ≈ 1303.45 cm
Y=x^2-2x+1 :)))) Hope this helped!!!!!
The answer is A, because the constant rate has to be the same
Since abc is similar to deftherefor ac/df = bc/ef7/28 = bc/36bc = 9 feet
