How to solve this math equation -9x ≥-90

Mathematics

2 answers:

Ilya [14]4 years ago

4 0

-9x ≥-90

-9x ≥ -90
—- —-
-9 -9

X 10

olga2289 [7]4 years ago

3 0

X<_10. ..............
...

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Name all the corresponding congruent angles and sides? Then complete the triangle congruence statement?

Flura [38]

Answer:

Angle A = Angle Y

Angle B = Angle Z

Angle C = Angle X

AB = YZ

AC = YX

BC = ZX

Triangle ABC = Triangle YZX

Step-by-step explanation:

Find this by looking at the corresponding parts on the other triangle. They have the same marking on them. Make sure that when answering for segments or triangles that the order is the same on both sides.

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3 years ago

The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airp

motikmotik

Answer:

The 95% confidence interval for the population mean rating is (5.73, 6.95).

Step-by-step explanation:

We start by calculating the mean and standard deviation of the sample:

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We have to calculate a 95% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=6.34.

The sample size is N=50.

When σ is not known, s divided by the square root of N is used as an estimate of σM:

$s_M=\dfrac{s}{\sqrt{N}}=\dfrac{2.16}{\sqrt{50}}=\dfrac{2.16}{7.071}=0.305$