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4 years ago

What is 8 1/2 - 3/4 This is for a short passage please help!

Mathematics

1 answer:

Flura [38]4 years ago

5 0

The answer is 7.75.......

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In a sample of 50 randomly selected students at a school, 38 students eat breakfast every morning. There are 652 students in the

Romashka-Z-Leto [24]

For the sample:
$\frac{38}{50} = 0.76 = 76\%$

Applying this to the whole population:

$652 \times \frac {38}{50} = 495.52$

Since we can't have "0.52 of a person" we roudn to the neares whole, or 496.

5 0

3 years ago

If A, B, and C are collinear, and B is between A and C. The ratio of AB to AC is 4:5. If A is at (-3, 7) and B is at (1, -5), wh

Levart [38]

Answer:

the coordinates for c is 5, -17

Step-by-step explanation:

5 0

3 years ago

Please help me (using trigonometry to find angle measures)

Mekhanik [1.2K]

Answer:

1. 64

2. 83

3. 33

4. 61

5. 47

6. 16

Step-by-step explanation:

Take the inverse function of the trig functions and plug the number in your calculator.

5 0

3 years ago

Help fast please ! Match the graph go one of the exponential functions

lara [203]

Answer:

$f(x)=(\frac{1}{4} )^{x} +4$

Step-by-step explanation:

The way I did this was I noticed that the graph had a y-intercept of 4 and the only exponential function that had a y-intercept of 4 was $f(x)=(\frac{1}{4} )^{x} +4$

3 0

3 years ago

With one method of a procedure called acceptance sampling, a sample of items is randomly selected without replacement and the en

GuDViN [60]

Answer:

$P = 0.1447$

Step-by-step explanation:

Given

$n = 7000$ -- total

$d = 180$ --- defective

$r = 6$ --- selected

Required

The probability of rejecting the batch

This means that at least one of the selected piece is defected.

So, we first calculate the probability that all the selected piece are accepted.

So, we have:

$Pr = \frac{7000 - 180}{7000} * \frac{6999 - 180}{6999}* \frac{6998 - 180}{6998}* \frac{6997 - 180}{6997}* \frac{6996 - 180}{6996}* \frac{6995 - 180}{6995}$

The denominator decreases by 1 because it is a probability without replacement; 180 is subtracted from the numerator to represent the number of non-defective CDs

So, we have:

$Pr = \frac{6820}{7000} * \frac{6819}{6999}* \frac{6818}{6998}* \frac{6817}{6997}* \frac{6816}{6996}* \frac{6815}{6995}$

$Pr = 0.8553$

Using the complement rule, the probability that the batch will be rejected is:

$P = 1 - 0.8553$

$P = 0.1447$

8 0

3 years ago