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Pavlova-9 [17]
3 years ago
14

What is 1.21×14 in standard algorithm

Mathematics
2 answers:
Vesnalui [34]3 years ago
6 0
I believe the answer is 280
kvasek [131]3 years ago
3 0
La respuesta correcta es 16.94 porque si dices 1.21x14 la respuesta sería 16.94 créeme lo hice con calculadora después y es la respuesta correcta
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A set of exam scores is normally distributed and has a mean of 80.2 and a standard deviation of 11. What is the probability that
ZanzabumX [31]

Answer:

93.32% probability that a randomly selected score will be greater than 63.7.

Step-by-step explanation:

Problems of normally distributed samples are 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.

In this problem, we have that:

\mu = 80.2, \sigma = 11

What is the probability that a randomly selected score will be greater than 63.7.

This is 1 subtracted by the pvalue of Z when X = 63.7. So

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

Z = \frac{63.7 - 80.2}{11}

Z = -1.5

Z = -1.5 has a pvalue of 0.0668

1 - 0.0668 = 0.9332

93.32% probability that a randomly selected score will be greater than 63.7.

5 0
3 years ago
Given a long algebraic equation, what are some strategies that you can use to make simplifying and evaluating the equation more
krok68 [10]

Answer:

See explanation

Step-by-step explanation:

Given a long algebraic equation, the like terms can be collected. When you collect like terms, you reduce the length of the algebraic equation.

After that, you can factorize the equation where possible. When you factorize the equation. It becomes quite easier to solve it efficiently.

6 0
3 years ago
You are riding on a road at 5mph and your friennd in the same direction at 3mph with a head start of 1/2 mile. how long will it
VashaNatasha [74]
You will catch up in 15 minutes
4 0
3 years ago
5. Point A is 3 units directly below (2, 2). What are the coordinates of point A? Answer: Point A (___)​
fiasKO [112]
A is (2, -1)

The X axis will not change since A is not going left or right of (2,2). You would count down 3 spaces for the y-axis and that would land you at -1 or you could solve by subtraction.

2-3= -1
3 0
10 months ago
Please help me with this
emmasim [6.3K]
The equation is put in slope intercept form which is y=mx+b

The slope is m and in this case it is -1/2.
To find the y intercept substitute in 0
for x then solve.
y =   - \frac{ 1}{2} (0) + 7
y = 7


5 0
3 years ago
Read 2 more answers
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