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4 years ago

Is the product of square root of 16 and 4/7 rational or irrational

Mathematics

2 answers:

ad-work [718]4 years ago

6 0

The square root of 16 is rational 4.

The ratio of 4 and 7 is rational 0.5714285714285

The product is hence rational.

djyliett [7]4 years ago

4 0

Answer:

rational number

Step-by-step explanation:

4/7 is a non terminating recurring decimal

square root of 16 = 4

so these are rational numbers

rational number * rational number = rational number

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Please help i have no idea what it means and the test is tomorrow.

Anarel [89]

Answer:

H. 2

Step-by-step explanation:

√(1 − cos² x) / sin x + √(1 − sin² x) / cos x

Use Pythagorean identity.

sin² x + cos² x = 1

So:

1 − cos² x = sin² x

and

1 − sin² x = cos² x

Substitute:

√(sin² x) / sin x + √(cos² x) / cos x

sin x / sin x + cos x / cos x

1 + 1

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4 years ago

Paulo catches a 7.45 am tram to school. During a period of 79 days, he arrives at school on time 53 occasions. Estimate the prob

lawyer [7]

Answer:

On time: 0.67

Late: 0.33

Step-by-step explanation:

Probabilities

One approach to estimating the probability of occurrence of an event is to record the number of times that event happens (e) and compare it with the total number of trials (n).

The probability can be estimated with the formula:

$\displaystyle P=\frac{e}{n}$

And the probability that the event doesn't occur is

Q = 1 - P

Paulo arrives on time to school e=53 times out of n=79 times. The probability that he arrives on time is:

$\displaystyle P=\frac{53}{79}$

P = 0.67

And the probability he arrives late is:

Q = 1 - 0.67 = 0.33

4 0

3 years ago

Write the slope- intercept form of the equation of the line passing through the point (3,5) and parallel to the line y=3x+6.

seropon [69]

Answer: The gradient of the line passing through is 3, thus the equation of the line becomes y=3x-4.

Step-by-step explanation: The parallel lines gradients that have similar gradients, so now we have the gradient of 3 because its similar to the other gradient. To get the equation of the line we use this equation: y=mx+c, we have to substitute the x and y to get the constant c.

5=3(3)+c

c= -4

y=3x+c

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4 years ago

What is the value of a?

kaheart [24]

Answer:

$a=\dfrac{16}{3}\ un.$