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Amiraneli [1.4K]
3 years ago
7

What is the name of the guy who invented the multiplication tables?

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
4 0
Hello,

It seems that multiplication tables were invented by Pythogore .

Later in the middle ages , a abacus has been invented by a guy who where living near my house : Gerbert d'Aurillac who became pape (Sylvestre 2 ,945-1003).




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6 x (36÷12)2 + 8 = =
svp [43]

6*(36/12)2+8

=44

Hope this helped :T

7 0
2 years ago
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17. Which of the following is a graph of y= x^2?
Juli2301 [7.4K]

Answer:

The parabola - quadratic.

Step-by-step explanation:

There is only graph / option in the picture but it is the correct one.  Regardless, whether x is a positive or negative, the y coordinate is going to be a positive number as x^2 will produce a positive.  So as -x^2 will also be positive.

7 0
2 years ago
the band knows 45. song. it play 12 songs in the first set, 15 song in the second set, and 11 songs in the last set. if no songs
Dennis_Churaev [7]

Answer:

7 songs

Step-by-step explanation:

12+15+11 is 38

45-38 is 7.

4 0
3 years ago
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The number of surface flaws in plastic panels used in the interior of automobiles has a Poisson distribution with a mean of 0.05
Tresset [83]

Answer:

(a) Probability that there are no surface flaws in an auto's interior is 0.6065 .

(b) If 10 cars are sold to a rental company, what is the probability that none of the 10 cars has any surface flaws is 0.00673 .

Step-by-step explanation:

We are given that the number of surface flaws in plastic panels used in the interior of automobiles has a Poisson distribution with a mean of 0.05 flaws per square foot of plastic panel.

Let X = Distribution of number of surface flaws in plastic panels

So, X ~ Poisson(\lambda)

The mean of Poisson distribution is given by, E(X) = \lambda = 0.05

which means, X ~ Poisson(0.05)

The probability distribution function of a Poisson random variable is:

P(X=x)=\frac{e^{-\lambda}\lambda^{x}}{x!}; for  x=0,1,2,3...

Now, we know that \lambda for per square foot of plastic panel is 0.05 and we are given that an automobile interior contains 10 square feet of plastic panel.

Therefore,  for 10 square foot of plastic panel is = 10 * 0.05 = 0.5

(a) Probability that there are no surface flaws in an auto's interior =P(X=0)

    P(X = 0) = \frac{e^{-0.5}*0.5^{0}}{0!} = e^{-0.5} = 0.6065

(b) If 10 cars are sold to a rental company, what is the probability that none of the 10 cars has any surface flaws = P(X = 0)^{10}

    So, P(X = 0)^{10} = 0.6065^{10} = 0.00673

8 0
3 years ago
What kind of solution is 3(x+1)-4x=3(2x+1)-7x
Bezzdna [24]

Answer:

3(x+1)-4x=3(2x+1)-7x = True

Step-by-step explanation:

7 0
3 years ago
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