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KatRina [158]
2 years ago
8

Find the size of the angles marked with a letter​

Mathematics
1 answer:
Marina CMI [18]2 years ago
8 0
Alternate interior angles on parallel lines via the parallel postulate gives you the angle supplementary to x = 120°, so x = 60°. alternate interior angles on 70° via the parallel postulate gives you y = 70°
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Find the variable of each pair
Lera25 [3.4K]
A. X=4
B. Y= 24, X= 6
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a gift box is 4 inches long 5 inches wide and 8 inches tall how much wrapping paper will it take to wrap thr box?
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3 0
2 years ago
H(x)=-x^2-4 and I(x)=2x+3<br> H(I(s))
ICE Princess25 [194]
Easy peasy
just subsitute I(x) for the x in the h(x) so
h(I(s))=-(2s+3)^2-4
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h(I(s))=-4s^2-12s-9-4
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3 0
3 years ago
I really really need pls plssss
Harman [31]

Answer:

Distribute the -6 and combine like terms which are the x's

Also combine the numbers

Step-by-step explanation:

8 0
2 years ago
A drug company is testing a new drag which is supported to reduce blood pressure. From the nine people who are used as subjects,
Pie

Answer:

The 95% confidence interval for the mean change in blood pressure, \bar{x}, is 1.744 < \bar{x} < 2.816

Step-by-step explanation:

The parameters given are;

The number of people in the sample, n = 9

The average drop in blood pressure, \bar{x} = 2.28 points

The standard deviation, σ = 0.82

The confidence level = 95%

The formula for confidence interval with a known mean is given as follows;

CI=\bar{x}\pm z_{\alpha/2} \dfrac{\sigma}{\sqrt{n}}

Where:

z_{\alpha/2} = z - score at 95% confidence level = 1.96

We therefore have;

CI=2.28 \pm 1.96 \times \dfrac{0.82}{\sqrt{9}}

Which gives the 95% confidence interval for the mean change in pressure, \bar{x}, is given as follows;

1.744 < \bar{x} < 2.816

6 0
2 years ago
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