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3 years ago

PLEASE HELP!!!!

Mathematics

1 answer:

Artyom0805 [142]3 years ago

5 0

Answer:

The total cost of producing 6 widgets is $231.

Step-by-step explanation:

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The sum of my digits is an even number. My first digit is 6 less than my second digit. 12 is the number you get when you add my

Arte-miy333 [17]

Answer:

Step-by-step explanation:

Let a and b represent the first and second digits, respectively.

... a = b -6 . . . . . . the first digit is 6 less than the second

... a + b = 12 . . . . .the sum of digits is 12 (an even number)

Using the expression in the first equation, we can substitute for a in the second equation:

... (b -6) +b = 12

... 2b = 18 . . . . . . add 6, simplify

... b = 9 . . . . . . . . .divide by 2

... a = 9 -6 = 3 . . . . from the first equation

The number is 39.

3 0

4 years ago

Subtract 16a+3 from 13a−5

AleksAgata [21]

Answer: -3a - 8

Step-by-step explanation:

(13 a - 5 ) - (16a + 3) = 13 a - 5 - 16a - 3 = -3a -8

5 0

3 years ago

Read 2 more answers

Will give brainliest!!

Karolina [17]

20ft, just multiply the width, height, and length, which is 2x2x5

3 0

3 years ago

Round to the nearest thousands34,344

Svet_ta [14]

Answer:

34,000 hope it helps

Step-by-step explanation:

8 0

3 years ago

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It has been observed that electrical connectors manufactured by Jolt Electrical Supply Company last an average of 18.2 months an

Juli2301 [7.4K]

Answer:

340

Step-by-step explanation:

The first step is finding the percentage of those who fail within 19 months.

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.

In this problem, we have that:

$\mu = 18.2, \sigma = 1.7$

The proportion is the pvalue of Z when X = 19. So

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

$Z = \frac{19 - 18.2}{1.7}$

$Z = 0.47$

$Z = 0.47$ has a pvalue of 0.6808.

Jolt is expected to replace 0.6808 of the connectors sold. Out of 500, that is, on average, 0.6808*500 = 340.

Jolt expects to replace, on average, 340 of the connectors sold.

4 0

3 years ago