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lakkis [162]
3 years ago
6

HElp me you know who you are

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0

Answer:

A

Step-by-step explanation:

Because the vertice K is only in the triangle KLM hence it can't be self congruent

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PLEASE HELP MEEEE!!!!!
elena-s [515]

Answer:

A and B would be rational

Step-by-step explanation:

A rational number is a number that can be written as a ratio. So that would mean it could also be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers. The number 8 is a rational number because it can be written as the fraction 8/1. (Thanks for waiting)

3 0
3 years ago
The mean gross annual incomes of certified welders are normally distributed with the mean of $20,000 and a standard deviation of
masya89 [10]

Answer:

Z=±1.65

Step-by-step explanation:

Some previous concepts

The p-value is the probability of obtaining the observed results of a test, assuming that the null hypothesis is correct.

A z-test for one mean "is a hypothesis test that attempts to make a claim about the population mean(μ)".

The null hypothesis attempts "to show that no variation exists between variables or that a single variable is no different than its mean"

The alternative hypothesis "is the hypothesis used in hypothesis testing that is contrary to the null hypothesis"

System of hypothesis

Null hypothesis: \mu=20000

Alternative hypothesis: \mu \neq 20000

If the random variable is distributed like this: X \sim N(\mu=20000,\sigma=2000)

The significance level provided is \alpha=0.1 and the value of \alpha/2= 0.05.

Since we are conducting a bilateral test, then we have two critical values. We need to find two quantiles that accumulates 0.05 of the area on the tails of the normal standard distribution. And in order to find it we can use the following excel codes:

"=NORM.INV(0.05,0,1)" , "=NORM.INV(1-0.05,0,1)"

And we got this:

z_{\alpha/2}=-1.65 and z_{1-\alpha/2}=1.65

So the correct answer for this case is:

Z=±1.65

8 0
3 years ago
Is 100 inches greater than 2 yards and 19 inches
lana66690 [7]
Yes, because there are 36 inches in a yard so 36x2 equals 72 and when you add 19 to 72 you get 91.
3 0
3 years ago
Read 2 more answers
When a shape becomes smaller, what transformation is happening?
andrezito [222]
Reflection: the object is reflected (or "flipped") across a line of reflection, which might be the x-axis, y-axis, or some other line. Dilation: the object stays the same shape, but is either stretched to become larger (an "enlargement") or shrunk to become smaller (a "reduction").
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3 years ago
ASAP PLEASE which of the following are maximum and minimum points of the function y=sin(x+pi)
Artemon [7]
I am 80 percent sure it’s c
3 0
3 years ago
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