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3 years ago

PLEASE HELP idk what any of this means. 25 points

Mathematics

1 answer:

kow [346]3 years ago

8 0

Answer:

Step-by-step explanation:

A dilation is something that enlarges or shrinks an existing figure, retaining all angle measures. The two figures will be similar, not congruent.

A dilation of 1/2 (which is less than one) will make a figure smaller. You divide each coordinate point by two

(x, y) → ( $\frac{1}{2}x, \frac{1}{2}y$ )

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A study of 12,000 able-bodied male students at the University of Illinois found that their times for the mile run were approxima

den301095 [7]

Answer:

$P (y < 6) = \frac{P(y- \mu)}{\sigma} \mu}{\sigma} \\\\=P(z$

Therefore the probability that a randomly selected student has time for mile run is less than 6 minute is 0.0618

Step-by-step explanation:

Normal with mean 6.88 minutes and

a standard deviation of 0.57 minutes.

Choose a student at random from this group and call his time for the mile Y. Find P(Y<6)

$\mu = 6.88$

$\sigma = 0.57$

y ≈ normal (μ, σ)

The z score is the value decreased by the mean divided by the standard deviation

$P (y < 6) = \frac{P(y- \mu)}{\sigma} \mu}{\sigma} \\\\=P(z$

Therefore the probability that a randomly selected student has time for mile run is less than 6 minute is 0.0618

3 0

2 years ago

The fracture strength of tempered glass averages 14.1 (measured in thousands of pounds per square inch) and has standard deviati

ololo11 [35]

Answer:

0.15866 is the probability of the average fracture strength of selected 100 pieces of glasses that of exceed 14.3.

Step-by-step explanation:

Given that, the strength of a tempered(x) a glass has average 14.1 and has standard deviation 2.

$\mu_x=14.1$ , $\sigma_x=2$

n=number of selected pieces= 100.

The probability that the average fracture strength of 100 pieces of this glass exceed 14.3 is

$P(\overline X>14.3)=P(\frac{\overline X-\mu_x}{2/\sqrt n}>\frac{14.3-14.1}{2/\sqrt{100}})$

$=P(\overline X>1)$

$=1-P(\overline X\leq 1)$

= 1 - 0.84134

=0.15866.

3 0

2 years ago

Solve : 3x - 3 = 2x<br><br> if you can show workings that would be great thank you !

Diano4ka-milaya [45]

Answer:

Step-by-step explanation:

3x-3=2x

3x-2x=3

x=3

5 0

2 years ago

Read 2 more answers

helpppp me pleassse its one tiny easy little question I give brainliest !!! ^^ I would really appreciate it <3

irina [24]

Answer:

where's the question?

5 0

3 years ago

Steve climbed up Mt. McKinney to an elevation of 5000 feet above sea level. His brother, Sam, dove 150 feet below the sea level

Allushta [10]

Answer:

They would be 5,150 feet apart.

Step-by-step explanation:

5,000 + 150 = 5,150

7 0

3 years ago