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gulaghasi [49]
3 years ago
15

1x 4 = 4 is a true statement. Which multiplication property is this an example of?

Mathematics
2 answers:
LekaFEV [45]3 years ago
6 0

Answer:

Multiplicative Identity Property

Step-by-step explanation: The Product of what number times one will equal the same number.

photoshop1234 [79]3 years ago
3 0

Answer: It is identity because it has a one in the equation.

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An isosceles triangle has base angles that each measure 48°. Which equation can be used to find x, the measure of the third angl
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Answer:

180-48/2

Step-by-step explanation:

180-48=

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3 years ago
Equation in slope intercept form of the line that passes through the given points of (2,-5) and (-8,3)
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First find the slope: Y2-Y1/X2-X1 =-4/5 Then plug in 1 y coordinate and x coordinate to the equation: Y=mx+b Y=-4/5x +b Y=-4/5x-17/5  

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3 years ago
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The probability distribution of a random variable X is given. x 1 2 3 4 P(X = x) 0.4 0.1 0.3 0.2 Compute the mean, variance, and
Readme [11.4K]

Mean:

E(X) = \displaystyle \sum_{x\in\{1,2,3,4\}}x\,P(X=x) = 1\times0.4 + 2\times0.1 + 3\times0.3 + 4\times0.2 = \boxed{2.3}

Variance:

\displaystyle V(X) = E\left((X-E(X))^2\right) = E(X^2) - E(X)^2 \\\\ E(X^2) = \sum_{x\in\{1,2,3,4\}}x^2\,P(X=x) = 1^2\times0.4 + 2^2\times0.1 + 3^2\times0.3 + 4^2\times0.2 = 6.7 \\\\ \implies V(X) = 6.7 - 2.3^2 = \boxed{1.41}

Standard deviation:

\sigma_X = \sqrt{V(X)} = \sqrt{1.41} \approx \boxed{1.19}

5 0
3 years ago
Brooklinn and Demetrius took a total of 115 photos at the science museum. Demetrius took 4 times more photos than Broolinn. How
qaws [65]

Answer:

460

Step-by-step explanation:

115 times 4 is 460, 115+115+115+115= 460.

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3 years ago
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PLEASE HELP!!!! asap
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Answer:

b

Step-by-step explanation:

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