Do 28/7.
28 / 7 = 4.
Therefore the flat screen TV is 4 feet tall.
9514 1404 393
Answer:
- New York style: $14
- Chocolate Marble: $16
Step-by-step explanation:
We can let n and c represent the costs of the New York style and the chocolate marble cheesecakes, respectively. Then the two sales are ...
11n +7c = 266 . . . . . . . Rob's sale
4n +14c = 280 . . . . . . Amy's sale
The ratio of coefficients of c is a "nice" number (2), so we can eliminate the c variable easily to solve this. Dividing the second equation by 2 and subtracting it from the first gives ...
(11n +7c) -(1/2)(4n +14c) = (266) -(1/2)(280)
9n = 126 . . . . . . simplify
n = 14 . . . . . . . . divide by 9
Filling this into the first equation, we have ...
11(14) +7c = 266
7c = 112 . . . . . . . . subtract 154
c = 16 . . . . . . . divide by 7
One New York style cheesecake costs $14; one chocolate marble cheesecake costs $16.
Answer: B
Step-by-step explanation:
the inner product of (a,b) * (c,d) is ac + bd
= 4 * 6 + 8 * -3
= 24 - 24
= 0
since the inner product is equal to 0, the vectors are perpendicular
answer is b
Answer:
2210
Step-by-step explanation:
390 =15%
390*3 = 130=5%
130*17=2210
