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2 years ago

In ΔPQR, ∠P and ∠Q are complementary angles. If sin Q = 3/5, then what is cos P + cos q

Mathematics

1 answer:

antiseptic1488 [7]2 years ago

3 0

Answer:7/5

Step-by-step explanation:

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Mark tosses a coin 25 times. What is the probability that it lands on heads exactly seven times?

mezya [45]

Answer:

1.43%

Step-by-step explanation:

we have that we can solve it by means of binomial, in this case m = 25. Also the probability of head is 50%. we need to know when it falls 7 times, therefore x = 7

the formula is:

P (x) = mCx * p ^ x * q ^ (m-x)

we know that p is 0.5 therefore q is equal to 0.5, replacing:

P (7) = 25C7 * 0.5 ^ 7 * 0.5 ^ (25-7)

P (7) = 25! / (7! * (25-7)!) * 0.5 ^ 7 * 0.5 ^ (25-7)

P = 0.0143

that is, the probability is 1.43%

6 0

2 years ago

A box of cereal states that there are 93 calories in a three fourths

cupoosta [38]

93/3 = 31, 31 x 4= 124

Calories per cup is 124

There are 372 calories in three cups

7 0

3 years ago

Find a value of the standard normal random variable Z, Call it Z0, such that

IRISSAK [1]

The answer is C hope this helped you out

8 0

2 years ago

Use the photo to answer

mr_godi [17]

The circumference is 113.04 and multiple that by 7.50 to get 847.8 and i believe that’s the answer.

3 0

2 years ago

Deb is searching online for airline tickets. Two weeks ago, the cost to fly from Hartford to Boston was

Brilliant_brown [7]

Answer:

Percent increase = 60%

Percent increase with baggage = 83%

Step-by-step explanation:

Given that:

Old price of the ticket = $210

New price of the ticket = $335

Increase amount =335-210 = $125

Percent increase = $\frac{Inrease\ amount}{Old\ price}*100$

Percent increase = $\frac{125}{210}*100 = 0.595*100$

Percent increase = 59.52% = 60%

Additional charges = $125+$50 = $175

Percent increase = $\frac{175}{210}*100$

Percent increase = 83%

Hence,

Percent increase = 60%

Percent increase with baggage = 83%

4 0

3 years ago

Read 2 more answers