Answer:
7/8
Step-by-step explanation:
If Haley bought 3/8 pounds of mozzarella and 1/2 pound of parmesan cheese we can convert 1/2 to eighths.
1/2 converted to eighths would be 4/8
4/8 + 3/8 = 7/8
She bought 7/8 pounds of cheese.
OK. I did it. Now let's see if I can go through it without
getting too complicated.
I think the key to the whole thing is this fact:
A radius drawn perpendicular to a chord bisects the chord.
That tells us several things:
-- OM bisects AB.
'M' is the midpoint of AB.
AM is half of AB.
-- ON bisects AC.
'N' is the midpoint of AC.
AN is half of AC.
-- Since AC is half of AB,
AN is half of AM.
a = b/2
Now look at the right triangle inside the rectangle.
'r' is the hypotenuse, so
a² + b² = r²
But a = b/2, so (b/2)² + b² = r²
(b/2)² = b²/4 b²/4 + b² = r²
Multiply each side by 4: b² + 4b² = 4r²
- - - - - - - - - - -
0 + 5b² = 4r²
Repeat the
original equation: a² + b² = r²
Subtract the last
two equations: -a² + 4b² = 3r²
Add a² to each side: 4b² = a² + 3r² . <=== ! ! !
Answer:
Let x be the number of cards in the $27 set, then Nicole has 2 friends that have $9 each. This makes 3 people, therefore each person gets x/3 cards. So each friend would get 1/3 of the cards.
Answer:
535 POUNDS
Step-by-step explanation:
The total cost of the trip is 1280+640+220= 2,140
2140/4 = 535
Answer:
4.13x+2
Step-by-step explanation:
11x+5+2x-3
13x+5-3
13x+2
