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IceJOKER [234]
3 years ago
12

A number is multiplied by 4. That result is added to 12. The final number is 40 , what is the oringial number

Mathematics
2 answers:
algol [13]3 years ago
4 0

Answer:

the original number is 7

Step-by-step explanation:

7•4 = 28

28+12=40

vazorg [7]3 years ago
3 0

Answer:

. hope that will help you

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In imaginary numbers can you multiply two radicals that have negative values under them that do not square to whole numbers
ElenaW [278]
Yes, you can; based on the inherent assumption that the "two radicals that have negative values" are, in fact, "imaginary numbers" .

Take, for example, the commonly known "imaginary number":  "i" ;  which represents the "imaginary number" ;  " √-1 " .

Since:  "i = √-1" ; 

Note that:   " i² = (√-1)² = √-1 * √-1 = √(-1*-1) = √1 = 1 .
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7 0
4 years ago
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Graph the inequality.<br> y &gt; |x-2| -5
Neporo4naja [7]

Here is the graph! I hope this helps!

3 0
2 years ago
The number of failures of a testing instrument from contamination particles on the product is a Poisson random variable with a m
Mazyrski [523]

Answer:

The probability that the instrument does not fail in an 8-hour shift is P(X=0) \approx 0.8659

The probability of at least 1 failure in a 24-hour day is P(X\geq 1 )\approx 0.3508

Step-by-step explanation:

The probability distribution of a Poisson random variable X representing the number of successes occurring in a given time interval or a specified region of space is given by the formula:

P(X)=\frac{e^{-\mu}\mu^x}{x!}

Let X be the number of failures of a testing instrument.

We know that the mean \mu = 0.018 failures per hour.

(a) To find the probability that the instrument does not fail in an 8-hour shift, you need to:

For an 8-hour shift, the mean is \mu=8\cdot 0.018=0.144

P(X=0)=\frac{e^{-0.144}0.144^0}{0!}\\\\P(X=0) \approx 0.8659

(b) To find the probability of at least 1 failure in a 24-hour day, you need to:

For a 24-hour day, the mean is \mu=24\cdot 0.018=0.432

P(X\geq 1 )=1-P(X=0)\\\\P(X\geq 1 )=1-\frac{e^{-0.432}0.432^0}{0!}\\\\P(X\geq 1 )\approx 0.3508

3 0
3 years ago
Pablo will take the 11:43 AM train to San Diego. The train is estimated to arrive in San Diego in 3 hours 45 minutes. What is th
11Alexandr11 [23.1K]

Answer:

3. 28pm

Step-by-step explanation:

11  43

+3 45

15 28

15.28-12

=3.28

5 0
2 years ago
Point G(−7, 4) is translated using the rule (x+10, y−6). What is the x-coordinate of G′ ?
den301095 [7]

Answer:

x = 3

Step-by-step explanation:

The translation rule (x + 10, y - 6) means add 10 to the original x- coordinate and subtract 6 from the original y- coordinate, that is

G(- 7, 4) → G'(- 7 + 10, 4 - 6) → G'(3, - 2)

6 0
3 years ago
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