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STALIN [3.7K]
2 years ago
13

Find each Unit rate:

Mathematics
2 answers:
raketka [301]2 years ago
5 0
The unit rate is 2.5 meters in 1 second 

40/16=2.5 
grin007 [14]2 years ago
4 0
This is the answer, hope it helps

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What is the discriminant of the quadratic equation?
Kipish [7]

Answer:

The discriminant is the part under the square root in the quadratic formula, b²-4ac. If it is more than 0, the equation has two real solutions. If it's less than 0, there are no solutions. If it's equal to 0, there is one solution.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the mixed number form<br> of 33/8
goblinko [34]
HCF of 8 that will go as much as possible to 33

4*8=32 and denominator is 8

33-32=1 which is the numerator

Answer is :

4 1/8
4 0
3 years ago
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Calls to a customer service center last on average 2.8 minutes with a standard deviation of 1.4 minutes. An operator in the call
Natali5045456 [20]

Answer:

The expected total amount of time the operator will spend on the calls each day is of 210 minutes.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

n-values of normal variable:

Suppose we have n values from a normally distributed variable. The mean of the sum of all the instances is M = n\mu and the standard deviation is s = \sigma\sqrt{n}

Calls to a customer service center last on average 2.8 minutes.

This means that \mu = 2.8

75 calls each day.

This means that n = 75

What is the expected total amount of time in minutes the operator will spend on the calls each day

This is M, so:

M = n\mu = 75*2.8 = 210

The expected total amount of time the operator will spend on the calls each day is of 210 minutes.

6 0
3 years ago
G(t)= t^2 + 3<br> h(t) = 4t – 3<br> Find (g · h)(-1)
MArishka [77]

Answer:

fifty-two. Explanation: g(h(−1 ))=g(x). x=h(−1)=4(−1)−3=−4−3=−7. g(x)= g(−7)=72+3=49+3=52.

6 0
3 years ago
Express the square root of -80 in its simplest terms.
spin [16.1K]

Answer:

C

Step-by-step explanation:

noting that \sqrt{-1} = i

Given

\sqrt{-80}

= \sqrt{16(-1)(5)}

= \sqrt{16} × \sqrt{-1} × \sqrt{5}

= 4i\sqrt{5} → C

4 0
3 years ago
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