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3 years ago

HELP!!!ITS DUE IN AN HOUR

Mathematics

2 answers:

sladkih [1.3K]3 years ago

5 0

Answer:

26.5

Step-by-step explanation:

dont worry I'm actually the salesperson at the jewlery store

andreyandreev [35.5K]3 years ago

4 0

Step-by-step explanation:

it is not confrmed answer

commission:106%

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Triangle A'B'C' is the image of triangle ABC under a rotation about point Q.<br><br>

yan [13]

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Answer:

True; about 120° CCW rotation about Q

Step-by-step explanation:

Triangle A'B'C' appears to be congruent to triangle ABC and about the same distance from point Q. The angle of rotation from ABC to A'B'C' appears to be about 120° counterclockwise when measured using a geometry program.

Triangle A'B'C' is the image of triangle ABC under rotation about 120° CCW about point Q.

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<em>Additional comment</em>

If choices of rotation angle are ±135° or ±165°, the best choice would be ...

135°

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2 years ago

Z^2 - x; use x = 1, and z = 3

elena55 [62]

Answer:

Step-by-step explanation:

3^2 = 9 - 1 = 8

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2 years ago

Isosceles triangle ABC contains angle bisectors segment BF, segment AD, and segment CE that intersect at X.

frosja888 [35]

Answer:

D) 134°

Step-by-step explanation:

i took the test

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3 years ago

Read 2 more answers

The article "Occurrence and Distribution of Ammonium in Iowa Groundwater" (K. Schilling, Water Environment Research, 2002:177–18

Papessa [141]

Answer: 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

Step-by-step explanation:

Since we have given that

Number of alluvial wells = 349

Number of quaternary wells = 143

Number of alluvial wells that had concentrations above 0.1 = 182

Number of quaternary wells that had concentrations above 0.1 = 112

Average of alluvial wells = 0.27

Standard deviation = 0.4

Average of quaternary wells = 1.62

Standard deviation =1.70

So, 95% confidence interval gives

alpha = 5% level of significance.

$\dfrac{\alpha}{2}=2.5\%\\\\z_{\frac{\alpha}{2}}=1.96$

So, 95% confidence interval becomes,

$(1.62-0.27)\pm 1.96\sqrt{\dfrac{0.4^2}{349}+\dfrac{1.7^2}{143}}\\\\=1.35\pm 1.96\times 0.020\\\\=(1.35-0.040,1.35+0.040)\\\\=(1.31,1.39)$

Hence, 95% confidence interval for the difference between the proportions would be (1.31, 1.39).

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3 years ago

The outer diameter of a spherical shell is 36 pie cm³and its inner diameter is 9 cm. Find the volume of the metal contained the

Leona [35]

Answer:

may be 11.460

sorry to say this but I'm not sure bout my answer

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2 years ago