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den301095 [7]
3 years ago
13

The blue figure is a dialation image of the black figure. The labeled point is the center of dilation. Tell wheaten the dilation

is a enlargement or a reduction. Then find the scale factor of dilation
Mathematics
2 answers:
algol133 years ago
8 0
I need a picture of the figures to help with this!
ziro4ka [17]3 years ago
5 0

Answer:

I look it up delete my answer will try again

Step-by-step explanation:

Need more info

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2x-y-3z=7, 3x+y+=10, 5x+y+2z=15
ivann1987 [24]

Answer:

x=22/7 y=4/7 z=-3/7

Step-by-step explanation:

4 0
3 years ago
The distribution of IQ scores can be modeled by a normal distribution with mean 100 and standard deviation 15.
evablogger [386]

Answer:

4.4% of the population with IQ between 120 and 125.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100

Standard Deviation, σ = 15

We are given that the distribution of IQ scores is a bell shaped distribution that is a normal distribution.

a) Let X be a person's IQ score.

Then, density functions for IQ scores is given by:

P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{z^2}{2}}\\\\\text{where,}\\\\z = \frac{x-\mu}{\sigma}\\\\P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}\\\\P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{(x-100)^2}{450}}

b) P(population with IQ between 120 and 125.)

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(120 \leq x \leq 125) = P(\displaystyle\frac{120 - 100}{15} \leq z \leq \displaystyle\frac{125-100}{15}) = P(1.33 \leq z \leq 1.66)\\\\= P(z \leq 1.66) - P(z < 1.33)\\= 0.952 - 0.908 = 0.044 = 4.4\%

P(120 \leq x \leq 125) = 4.4\%

6 0
3 years ago
A pilot can travel 540 miles with the wind in the same amount of time as 380 miles against the wind. Find the speed of the wind
stepladder [879]
T=d/v

540/(230+w)=380/(230-w)

540(230-w)=380(230+w)

124200-540w=87400+380w

124200-920w=87400

-920w=-36800

w=40

So the wind speed is 40 miles per hour.
5 0
3 years ago
Factor −5x2 + 10x.<br><br> −5x(x + 2)<br> 5(−x2 + 10x)<br> 5x(−x + 2)<br> x(5x + 10)
Hitman42 [59]

{ \red{ \bold{option \: (c)}}}

Step-by-step explanation:

{ \purple{ \tt{ { - 5x}^{2}  + 10x}}}

Take { \purple{ \tt{5x}}}as common. Then,

{ \purple{ \tt{5x( - x + 2)}}}

4 0
1 year ago
1. What is the greatest multiple of 7 that is less than 60?
hodyreva [135]
the first one is 56
3 0
3 years ago
Read 2 more answers
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