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4 years ago

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In a trapezoid with bases of lengths a and b, a line parallel to the bases is drawn through the intersection point of the diagon

als. Find the length of the segment that is cut from that line by the legs of the trapezoid.

1 answer:

mote1985 [20]4 years ago

3 0

if we name that part x, then we can say

1/x = 1/a + 1/b

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In a recent poll^1 of 1000 American adults, the number saying that exercise is an important part of daily life was 753. Use stra

Annette [7]

Answer:

The 90% confidence interval is between a lower limit of 0.7306 and an upper limit of 0.7754.

Step-by-step explanation:

Confidence interval for a proportion is given as p +/- margin of error (E)

p is sample proportion = 753/1000 = 0.753

n is sample size = 1000

confidence level = 90%

critical value corresponding to 90% confidence level and infinity degree of freedom is 1.645

E = critical value×sqrt[p(1-p) ÷ n] = 1.645×sqrt[0.753(1-0.753) ÷ 1000] = 1.645×sqrt[1.85991×10^-4] = 1.645×0.0136 = 0.0224

Lower limit of proportion = p - E = 0.753 - 0.0224 = 0.7306

Upper limit of proportion = p + E = 0.753 + 0.0224 = 0.7754

90% confidence interval is (0.7306, 0.7754)

8 0

4 years ago

Help if u do both I’ll mark Brainlynest

amm1812

Answer:

See step-by-step explanation

Step-by-step explanation:

16. C, <AOB = 20

The total angle (<AOC) is equal to the sum of the angles inside of it (<AOB and < BOC).

<AOC= <AOB + <BOC

47=<AOB+27

<AOB=20

17. 24

Area of a square = $s^{2}$

36= $s^{2}$

s= 6

One side is 6

The perimeter of a square is 4(s)

4(6) = 24

Word of encouragement:

Good luck!

6 0

3 years ago

Read 2 more answers

Please help! I will mark brainlest! Answer the question. HELP!? Please show steps also, thank you!

mina [271]

Answer:

A

Step-by-step explanation:

reason

AM SO :)

AM SO :)

AM SO :)

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3 years ago

Read 2 more answers

How do I solve: 3w/x=6e

lana [24]

The answer is ×=w/2e.thats it

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3 years ago

Find the distance between the origin and the point R = (9,7,8). The distance is: Ensure that you use at least 4 decimal place ac

gregori [183]

Answer:

The distance between the origin and the given point is 13.9283 units.

Step-by-step explanation:

The coordinates of origin are (0,0,0)

We are given a point R(9,7,80

The distance formula:

$\sqrt{(y_1 -x_1)^2 + (y_2 -x_2)^2 + (y_3 -x_3)^2}$ , where $(x_1, x_2, x_3)$ are coordinates of one point and $(y_1, y_2, y_3)$ are coordinates of other point.

Putting the values as:

$y_1 = 9, y_2 = 7, y_3 = 8\\x_1 =0, x_2 = 0, x_3 = 0$

We get d = $\sqrt{81 + 64 + 49}$

d = $\sqrt{194}$

d = 13.9283

Thus, the distance between the origin and the given point is 13.9283 units.

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3 years ago