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sergij07 [2.7K]
3 years ago
9

True or false if a x b=0 the either a=0 or b=0 pls help!!

Mathematics
1 answer:
musickatia [10]3 years ago
5 0

Answer:

yes that answer is true

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Leilani makes $11 an hour. One week she works 40 hours. How much money did Leilani make that week? A.$51 B.$80 C.$440 D.$800 PLZ
Law Incorporation [45]
440 because 11x40 is 440 that’s how much she’ll make :)
8 0
3 years ago
Read 2 more answers
Which ordered pair is a solution of the equation?<br> y = 3x+5
DedPeter [7]

Answer:

Step-by-step explanation:

Y=1/3y+-5/3

7 0
3 years ago
Consider a value to be significantly low if its z score less than or equal to minus−2 or consider a value to be significantly hi
den301095 [7]

Answer:

Test scores of 10.2 or lower are significantly low.

Test scores of 31 or higher are significantly high

Step-by-step explanation:

Z-score:

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 = 20.6, \sigma = 5.2

Significantly low:

Z-scores of -2 or lower

So scores of X when Z = -2 or lower

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

-2 = \frac{X - 20.6}{5.2}

X - 20.6 = -2*5.2

X = 10.2

Test scores of 10.2 or lower are significantly low.

Significantly high:

Z-scores of 2 or higher

So scores of X when Z = 2 or higher

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

2 = \frac{X - 20.6}{5.2}

X - 20.6 = 2*5.2

X = 31

Test scores of 31 or higher are significantly high

6 0
3 years ago
Can someone help me? I need to turn this in ASAP!! Right answer gets brainliest &lt;3
Ket [755]

Answer:

interval 41-50 and 61-70 i think

Step-by-step explanation:

6 0
3 years ago
600 thousands = how many tens?
san4es73 [151]
The answer is 60,000. because it would equal six hundred thousand, and that divided by 10 is 60,000
8 0
3 years ago
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