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3 years ago

7) Ted has $6.80 in quarters and dimes. The

Mathematics

1 answer:

notsponge [240]3 years ago

7 0

Answer:

Step-by-step explanation:

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Identify a pattern and find the next number in the pattern. -5, 1, 7, 13

natulia [17]

Answer:

Step-by-step explanation:

The pattern is that it +6 every number.

-5 + 6 = 1

1 + 6 = 7

7 + 6 = 13

So the next number is 13 + 6 = 19.

EDIT - I can't add sorry.

4 0

3 years ago

Read 2 more answers

Prove the following statement by contradiction using an indirect proof. In a triangle angle A = 90°, then the triangle is a righ

kati45 [8]

Answer:

I prefer taking B

Step-by-step explanation : because when the degree is 90 than it should be a right triangle

3 0

3 years ago

Solve the equation using the Properties of Equality. 64 = −3d + 7 d =

LuckyWell [14K]

Answer:

d = -19

Step-by-step explanation:

64 = -3d + 7

Subtracting 7 on both sides,

64-7 = -3d

57 = -3d

Divide both sides by -3,

d = -19

4 0

2 years ago

12 of 1412 of 14 Questions Question 12 A cable is connected to the top of a building that is 20 feet high. The cable is attached

KIM [24]

Answer:

Step-by-step explanation:

2345i91 ksbfis this is the answer

3 0

3 years ago

Military radar and missile detection systems are designed to warn a coutry of an enemy attack. Assume that a particular detectio

Tom [10]

Answer:

0.96 = 96% probability that at least one of them detect an enemy attack.

Step-by-step explanation:

For each radar, there are only two possible outcomes. Either it detects the attack, or it does not. The missiles are operated independently, which means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Assume that a particular detection system has a 0.80 probability of detecting a missile attack.

This means that $p = 0.8$

If two military radars are installed in two different areas and they operate independently, the probability that at least one of them detect an enemy attack is

This is $P(X \geq 1)$ when $n = 2$ . So

$P(X \geq 1) = 1 - P(X = 0)$

In which

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 0) = C_{2,0}.(0.8)^{0}.(0.2)^{2} = 0.04$

$P(X \geq 1) = 1 - P(X = 0) = 1 - 0.04 = 0.96$

0.96 = 96% probability that at least one of them detect an enemy attack.

6 0

3 years ago