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3 years ago

Inequality from graph Choose the inequality that represents the following graph.

Mathematics

2 answers:

nevsk [136]3 years ago

8 0

Answer:

Step-by-step explanation:

Marysya12 [62]3 years ago

4 0

The answer would be C. this is because the graph shows an open circle, which means it is NOT “or equal to”, so there shouldn’t be a line under the sign. the arrow is also drawn pointing to the right, meaning x would be GREATER THAN 0.

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frez [133]

Solution is in the picture

3 0

3 years ago

At a carnival, contestants are asked to keep rolling a pair of dice until they roll snake eyes. The number of rolls needed has a

Stells [14]

Answer:

The two numbers of rolls are 25.2 and 46.8.

Step-by-step explanation:

The Chebyshev's theorem states that, if X is a r.v. with mean µ and standard deviation σ, then for any positive number k, we have

$P (|X -\mu| < k\sigma) \geq (1-\frac{1}{k^{2}})$

Here

$(1-\frac{1}{k^{2}})=0.75\\\\\Rightarrow \frac{1}{k^{2}}=0.25\\\\\Rightarrow k=\sqrt{\frac{1}{0.25}}\\\\\Rightarrow k=2$

Then we know that,

$|X - \mu| \geq k\sigma,\\\\ \Rightarrow \mu - k\sigma \leq X \leq \mu + k\sigma$ .

Here it is given that mean (µ) = 36 and standard deviation (σ) = 5.4.

Compute the two values between which at least 75% of the contestants lie as follows:

$P(\mu - k\sigma \leq X \leq \mu + k\sigma)=0.75\\\\P(36 - 2\cdot\ 5.4 \leq X \leq 36 + 2\cdot\ 5.4)=0.75\\\\P(25.2\leq X\leq 46.8)=0.75$

Thus, the two numbers of rolls are 25.2 and 46.8.

8 0

3 years ago

Please help question in picture

svet-max [94.6K]

Answer:

A:29

Step-by-step explanation:

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3 years ago

What properties of a figure are preserved under a rotation?

Mekhanik [1.2K]

Isometries I'm guessing<span>

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3 years ago

Which of the following is the graph of f(x) = –0.5|x + 3| –2?

oksano4ka [1.4K]

Answer:

See attached picture

Step-by-step explanation:

To graph an absolute value, find the vertex from $f(x) = a|x-h|+k$ where (h,-k) is the vertex. Here (h,-k) is (-3, -2). Then test two points around it like x=-5 and -1.

$f(x) = -0.5|-5+3|-2 = -0.5(2) -2 = -1-2 = -3$

Plot (-5,-3).

$f(x) = -0.5|-1+3|-2 = -0.5(2) -2 = -1-2 = -3$

Plot (-1,-3).

Connect in V shape.

4 0

3 years ago

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