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WITCHER [35]
3 years ago
13

Can Somebody help me real quick?

Mathematics
1 answer:
Eddi Din [679]3 years ago
8 0

Answer:The answer is (4 x -1)

Step-by-step explanation: How to solve this is tell the teacher I don’t know

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Which is the best estimate for the quotient of 3,004.914 / 2.298? A. 15 B. 100 C. 1500 D. 10,000
Allisa [31]
The answer is 1307.621 and if you estimate that answer it would be D
7 0
4 years ago
The torque required to remove bolts in a steel plate is rated as very high, high, average, and low, and these occur about 30%, 4
Diano4ka-milaya [45]

Answer:

0.004

Step-by-step explanation:

If two events A, B with probabilities P(A), P(B) are independent, then the probability of the two events ocurring at the same time A∩B is P(A)P(B).

In this case we have

P(torque=very high) = 0.3

P(torque=high) = 0.4

P(torque=average) = 0.2

P(torque=low) = 0.01

Using the product rule, we see there are

\frac{25!}{7!8!6!4!}=4.4172*10^{12}

ways of partitioning 25 bolts in groups of 7,8,6 and 4 bolts.

Each one of those partitions has a probability of

(P(torque=very high))^7*(P(torque=high))^8*(P(torque=average))^6*(P(torque=low))^4= (0.3^7)*(0.4^8)*(0.2^6)*(0.1^4)=9.1729*10^{-16}

So, the probability of rating 7 very high, 8 high, 6 average, and 4 low is

4.4172*10^{12}*9.1729*10^{-16}=0.004

5 0
4 years ago
Solve sin(2x)cos(6x)-cos(2x)sin(6x)=-0.7
RSB [31]

Answer:

x = π/4 - 1/4 sin^(-1)(7/10) + (π n_1)/2 for n_1 element Z

or x = (π n_2)/2 + 1/4 sin^(-1)(7/10) for n_2 element Z

Step-by-step explanation:

Solve for x:

cos(6 x) sin(2 x) - cos(2 x) sin(6 x) = -0.7

-0.7 = -7/10:

cos(6 x) sin(2 x) - cos(2 x) sin(6 x) = -7/10

Reduce trigonometric functions:

-sin(4 x) = -7/10

Multiply both sides by -1:

sin(4 x) = 7/10

Take the inverse sine of both sides:

4 x = π - sin^(-1)(7/10) + 2 π n_1 for n_1 element Z

or 4 x = 2 π n_2 + sin^(-1)(7/10) for n_2 element Z

Divide both sides by 4:

x = π/4 - 1/4 sin^(-1)(7/10) + (π n_1)/2 for n_1 element Z

or 4 x = 2 π n_2 + sin^(-1)(7/10) for n_2 element Z

Divide both sides by 4:

Answer: x = π/4 - 1/4 sin^(-1)(7/10) + (π n_1)/2 for n_1 element Z

or x = (π n_2)/2 + 1/4 sin^(-1)(7/10) for n_2 element Z

8 0
3 years ago
Felicia had $80 when she went to a music store that charges $18 for each CD. She needs to have no less than $20 in her wallet wh
babunello [35]

Answer:

The amount of CD's she could buy would be 3.

Step-by-step explanation:

80-20=60

60÷18 = 3 CD's

4 0
3 years ago
Read 2 more answers
Inequação 3 ( X - 7 ) - 2 X > 0
agasfer [191]

x > 21

You want to isolate the x on one side by doing the same thing on both sides, using reversed PEMDAS

4 0
4 years ago
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