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2 years ago

10/3 / 1/6 - (2.8 + 1.2)

Mathematics

1 answer:

Katen [24]2 years ago

8 0

Multiply left top with the right bottom and the same with the top right and bottom left or flip

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What is another name for Angle 1? Line segments J L and L M combine to form an angle. Line segment L K comes out of the angle to

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Answer: The answer is the first one, angle JLK

Step-by-step explanation:

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A Norman window is rectangular on three sides with a semi-circular top. You decide to install a Norman window in your family roo

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Given that the window is rectangular on three sides with semi-circular top and with the following dimensions: 4 as the length and 3 as the width. We can calculate the perimeter using the given values, and it gives us the perimeter of 15.71 feet.

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By visual inspection determine the best-fitting regression model for the data plot below

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Answer:

Exponential

Step-by-step explanation:

By visual inspection the graph generated by the points plotted is an exponential graph as the graph curves upward. The graph is also continous and differs from either a decreasing or increasing Linear graph, which shows a straight best of fit pattern. Hence, the graph most closely represents an exponential graph from visual examination.

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2 years ago

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Which shows the correct substitution of the values a, b, and c from the equation 0 = – 3x2 – 2x + 6 into the quadratic formula?

Stella [2.4K]

Answer:

x = StartFraction negative (negative 2) plus or minus StartRoot (negative 2) squared minus 4 (negative 3)(6) EndRoot Over 2(negative 3) EndFraction

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$0=-3x^{2}-2x+6$

$a=-3\\b=-2\\c=6$

substitute in the formula

$x=\frac{-(-2)(+/-)\sqrt{-2^{2}-4(-3)(6)}} {2(-3)}$

therefore

x = StartFraction negative (negative 2) plus or minus StartRoot (negative 2) squared minus 4 (negative 3)(6) EndRoot Over 2(negative 3) EndFraction

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2 years ago

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A four-person committee is chosen from a group of eight boys and six girls.

Stolb23 [73]

Answer:

The probability is approximately 0.0699. That's $\displaystyle \frac{10}{143}$ to be exact.

Step-by-step explanation:

How many ways to choose four out of a total of $8 + 6 = 14$ boys and girls?

$\displaystyle {14\choose 4} = 1001$ .

How many ways to choose four boys out of a total eight boys?

$\displaystyle {8\choose 4} = 70$ .

What's the probability that all four persons chosen out of the pack of fourteen are boys? All 1001 ways of choosing four out of fourteen are equally likely. However, only 70 satisfy the conditions. In other words, the probability of choosing four boys out of this group of eight boys and six girls is equal to:

$\begin{aligned}&\frac{\text{Number of ways to choose four out of eight}}{\text{Number of ways to choose four out of fourteen}} \\= &\frac{70}{1001}\\=& \frac{10}{143}\approx 0.0699\end{aligned}$ .

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