U = -b + 21 . . . (1)
u = -2b + 30 . . . (2)
Equating (1) and (2),
-b + 21 = -2b + 30
-b + 2b = 30 - 21
b = 9
u = -9 + 21 = 12

Therefore, (b, u) = (9, 12).

4 0

3 years ago

5. A newspaper in New York took a random sample of 500 registered voters from New York City and found that 300 favored a certain

RUDIKE [14]

Answer:

Step-by-step explanation:

In first voting 300 person favors the candidate out of 500

i.e. $\frac{300}{500}=0.6$

60 % Population favor the candidate

For second voting 550 person favors the candidate out of 1000 candidates

i.e. $\frac{550}{1000}=0.55$

55 % Population favors candidate

so according to voting, 1 st voting is favorable for candidate because a large population support him as compared to second voting.

7 0

3 years ago

Dalia flies an ultralight plane with a tailwind to a nearby town in 1/3 of an hour. On the return trip, she travels the same dis

pashok25 [27]

Dalia had an average airspeed of ⇒ 42 miles per hour.
The average wind speed was ⇒ 12 miles per hour.

8 0

3 years ago

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