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2 years ago

The triangles are similar. What is the value of x? Enter your answer in the box. x =

Mathematics

1 answer:

Radda [10]2 years ago

4 0

X = 13
using proportional reasoning, 48/12=4, and dividing 52 by 4 will give you the answer, 13.

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Solution to the equation y= -2/3x + 9

NISA [10]

Answer:

I think that we cannot find either x or y

Step-by-step explanation:

Because we need at least two equations

4 0

2 years ago

You and a friend each have a collection of tokens. Initially, for every 8 tokens you had, your friend had 3. After you give half

vlada-n [284]

If your friend now has 18 that means you had 48, as mentioned above, you had given half of your tokens, half of 48 is 24. =24

3 0

2 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

2 years ago

Please help! picture attached :)

Radda [10]

Answer:

y=-3x+4

Step-by-step explanation:

im assuming that you need the equation of the table

to find slope, y2-y1/x2-x1 10-4/-2-0

6/-2=-3 slope=-3

y=mx+b just sub in the numbers from a point in the table

10=-3(-2)+b

10=6+b

b=4

y=-3x+b

4 0

1 year ago

Number 20 ASAP ASAP THANK YOU

stira [4]

Answer:

I think its A, Because if you look at the problome A makes sense

6 0

2 years ago