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mario62 [17]
3 years ago
6

Twenty-six , 2 tens 6 ones , 25, 20+6 which one is the odd one out?

Mathematics
1 answer:
Aneli [31]3 years ago
8 0

Answer:

25

Step-by-step explanation:

twenty-six=26

2 tens 6 ones= 26

25=25

20+6=26

25 is the odd one out.

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What is the factored form of x^2-x-2
lisov135 [29]

Answer:

(x-2),(x+1)

Step-by-step explanation:

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2 years ago
A community college has a math placement exam that has a mean of 65 and a standard deviation of 8.2. If a student takes the exam
Marat540 [252]

Answer:

The score that cuts off the bottom 2.5% is 48.93.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

\mu = 65, \sigma = 8.2

What is the score that cuts off the bottom 2.5%

This is X when Z has a pvalue of 0.025, so X when Z = -1.96.

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

-1.96 = \frac{X - 65}{8.2}

X - 65 = -1.96*8.2

X = 48.93

The score that cuts off the bottom 2.5% is 48.93.

8 0
3 years ago
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Let y = 2. Solve for t: y = 3t - 4<br> A.<br> B.<br> c.<br> D.<br> -2<br> -2/3<br> 2<br> 3
Pavel [41]

Answer:

a -    t = 2

Step-by-step explanation:

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I need help on 2,5,9
USPshnik [31]

Answer:

2. -4/3

5. 128/105

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