Help me please 30 points

What is the autput the following machine when the intut is 4

ch4aika [34]

Input is 4.

Process machine:

Input > - 7 > ÷ 3 > Output

Solve:

(Input) 4 - 7 = -3

-3 ÷ 3 = -1 (Output)

Input = 4

Output = -1

3 0

3 years ago

A 16 inch candle is lit and burns at a constant rate of 1.1 inches per hour. Let t represent the never of hours that have elapse

Alex17521 [72]

Answer:

(a) Number of inches that have burned from the candle since it was lit is (1.1t) inches

(b) The remaining length of the candle is (16 - 1.1t) inches

Step-by-step explanation:

(a). Length of candle before it was lit = 16 inches

Constant rate at which at which candle burns = 1.1 inches per hour

Let t represent the number of hours that have elapsed since the candle was lit

In 1 hour, 1.1 inches of the candle burned

Therefore, in t hours, (1.1t) inches of the candle would have burned since the candle was lit

(b) Remaining length of candle = length of candle before it was lit - length of candle that have burned = 16 inches - 1.1t inches = (16 - 1.1t) inches

6 0

3 years ago

How to do this problem Please help

gregori [183]

The answer is 64, because the amount is doubled each day.

5 0

3 years ago

A principal believes 50% of her music students reported their practice hours accurately. Based on that assumption, she ran 200 s

Alex17521 [72]

Answer:

C. unlikely

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

A probability is said to be extremely likely if it is 95% or higher, and extremely unlikely if it is 5% or lower. A probabilty higher than 50% and lower than 95% is said to be likely, and higher than 5% and lower than 50% is said to be unlikely.

In this problem, we have that:

$\mu = 0.48, \sigma = 0.18$

How likely is it that a single survey would return a mean of 30%?

We have to find the pvalue of Z when X = 0.30.

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{0.30 - 0.48}{0.18}$

$Z = -1$

$Z = -1$ has a pvalue of 0.1587.

So the correct answer is:

C. unlikely

4 0

3 years ago

Let f(x)= x^2 -2x+6 find f(-1)

Leokris [45]

Answer:

Step-by-step explanation:

f(x) = x^2 - 2x + 6

to find f(-1), we sub in -1 for every x

f(-1) = (-1^2) - 2(-1) + 6

f(-1) = 1 + 2 + 6

f(-1) = 9 <=======

8 0

3 years ago