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svlad2 [7]
3 years ago
12

A secret code consists of 3 digits, followed by 2 letters, followed by 1 of the following symbols: @

Mathematics
1 answer:
WINSTONCH [101]3 years ago
4 0
The answer is B hope this helps
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Assume that θ is a positive acute angle.<br><br> Given: sin θ =28/53<br> Find: sin2θ
antiseptic1488 [7]

Answer:

725 - 360 = 365

365 - 360 = 5

The acute angle is 5 degrees.

sin2θ = sin(2*5) = sin(10) = 0.1736

Step-by-step explanation:

3 0
3 years ago
6)a garden was square, but last year she made it makes or shortening one side 5 meters and the other 8 meters. If the area of th
Alekssandra [29.7K]

Answer:

let dimention of original garden be x

then (x-8)(x-5) = 180

x^2 -13x -140 = 0

(x-20)(x+7)=0

x= 20 or x = -7

x = 20

original area = (20)^2

= 400 m^2

5 0
2 years ago
According to the MIT Airline Data Project, American Airlines controlled 15.5% of the domestic market during a recent year. A ran
Naya [18.7K]

Answer:

0.0143

Step-by-step explanation:

In this question, we are asked to use the binomial distribution to calculate the probability that 10 or fewer passengers from a sample of MIT data project sample were on American airline flights.

We proceed as follows;

The probability that a passenger was an American flight is 15.5%= 15.55/100 = 0.155

Let’s call this probability p

The probability that he/she isn’t on the flight, let’s call this q

q =1 - p= 0.845

Sample size, n = 155

P(X < A) = P(Z < (A - mean)/standard deviation)

Mean = np

= 125 x 0.155

= 19.375

Standard deviation = √npq

= √ (125 x 0.155x 0.845)

= 4.0462

P(10 or fewer passengers were on American Airline flights) = P(X \leq 10)

= P(Z < (10.5 - 19.375)/4.0462)

= P(Z < -2.19)

= 0.0143

4 0
3 years ago
Read 2 more answers
Barry is solving the equation 3x2 - 7x + 12 = 0 using the quadratic formula. He notices that, under the radical, the expression
AURORKA [14]
B, Imaginary solutions
4 0
3 years ago
Read 2 more answers
If a and b are complements, then which of the following is true about the probability of b based on the probability of a?
Vesnalui [34]

Answer:

Option 2 is true.

Step-by-step explanation:

Th sum of probabilities of two complementary events is one, which implies

P(A) + P(B) = 1

So,

P(B) = 1 - P(A)

3 0
3 years ago
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