what is the value of (x+y)(y-x) when x=5.5 and y=4.5?
-10
plants make their own food using energy that comes from the ____.
sunlight
You’ll find me in mercury, earth, mars, jupiter, saturn, & uranus. But never neptune or venus. What am I?
letter "r"
88 keys
What year did Facebook launch?
2004
Let x be an odd number. In terms of x, what is the sum of the two even numbers closest to x?
2x
photosynthesis
I'm tall when I'm young and old when I'm short. What am I?
a candle
Leonardo da Vinci
Michael Phelps (28 medals)
The average score of 10 players was 6.5. One player's score was dropped, changing the mean of the remaining scores to 6.0. What score was dropped?
11
What is the fastest growing plant?
Bamboo
The one who makes it sells it. The one who buys it never uses it. The one who uses it never knows he’s using it. What is it?
A coffin
I am a three-digit number. My second digit is 4 times bigger than the third digit. My first digit is 3 less than my second digit. Guess my number?
141
Originally, Amazon only sold what kind of product?
Books
Carolyn walked 3 miles from her house to the library and then 2 1/2 miles farther to the grocery store. Returning home by the same route, she walked 1 2/3 miles before stopping at a friend’s house. How many miles did Carolyn have left to walk home?
3 5/6 miles
write the chemical name of carbon dioxide.
CO2
What has 13 hearts but no other organs?
A deck of cards
What is the more popular name for the portrait officially titled “La Gioconda,” painted in Florence in 1503?
The Mona Lisa
The first vaccine developed was for which disease?
smallpox
In the figure above, PQRS is a square. Point S is the center of the circle, and points P and R are on the circle. If the area of the square is 4 square centimeters, what is the area, in square centimeters, of the shaded quarter of the circle? (draw pic)
pi
What does DNA stand for?
Deoxyribonucleic acid
what walks on four feet in the morning, two in the afternoon, and three at night?
A human
What is the highest-grossing Broadway show of all time?
The Lion King
what is your body's largest organ?
skin