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2 years ago

∠1 and ∠2 are supplementary angles. If m∠1 = 77°, then m∠2 =

Mathematics

1 answer:

posledela2 years ago

7 0

Answer:

B. 103°

Step-by-step explanation:

Supplementary angles add up to 180°, so we can find the measure of angle 2 by subtracting 77 from 180

180 - 77

= 103

So, m∠2 is 103°

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(Small sample confidence intervals for a population mean) suppose you are taking a sampling of 15 measurements. you find that x=

Luda [366]

Answer:

The 99% confidence interval is $71.67 < \mu < 78.33$

Step-by-step explanation:

From the question we are told that

The sample size is $n = 15$

The sample mean is $\= x = 75$

The standard deviation is $s = 5$

Given that confidence is 99% then the level of significance is mathematically represented as

$\alpha = 100 - 99$

$\alpha = 1\%$

$\alpha = 0.01$

Next we obtain the critical values of $\frac{ \alpha }{2}$ from the normal distribution table

The value is

$Z_{\frac{ \alpha }{2} } = 2.58$

Generally the margin for error is mathematically represented as

$E = Z_{\frac{ \alpha }{2} } * \frac{ s}{ \sqrt{n} }$

=> $E = 2.58 * \frac{ 5}{ \sqrt{15} }$

=> $E = 3.3307$

The 99% confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

=> $75 - 3.3307 < \mu$

=> $71.67 < \mu < 78.33$

3 0

2 years ago

HEEEEEEEEEEEEEEEEEEEEEEELP

Crank

Answer:

A is -2

B is 2

C is 4

Step-by-step explanation:

So just replace each letter with these numbers and do the math, hope this helps

4 1

3 years ago

Midpoint question......

ludmilkaskok [199]

I believe it would be 5.1 if this is incorrect then I’m so sorry

4 0

2 years ago

Suppose the coordinate of P is 2, PQ = 8, and PR = 12. What are the possible coordinates of the midpoint of the given segment? T

Ratling [72]

Base in your question the coordinate is P is 2, PQ has a coordinate of 8 while PR has a coordinate of 12. To find the mid point of each segment you must first find the coordinate of QR which is from 8-12. So the answer will be
PQ = 5, PR = 6, and QR= 10

3 0

2 years ago

Plz answer asap thanks

tester [92]

The answer is 44%.!!!!!!!!!!!!!!!!!!!!!!!!!!!

8 0

2 years ago

Read 2 more answers