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2 years ago

In an arithmetic sequence, T1=4 and T7=22.

Mathematics

1 answer:

jonny [76]2 years ago

7 0

Answer:

Step-by-step explanation:

t1 means a1 and t7 means a7

a+(n-1)d=an

a+(1-1)d=4

so we get a as 4

a=4

a+(n-1)d=an

4+(7-1)d=22

4+6d=22

6d=22-4

d=18/6

d=3

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A confidence interval is constructed for an unknown population proportion, p. A sample is collected, and the 95% confidence inte

Musya8 [376]

Answer: The population proportion is between 0.34 and 0.46 .

Step-by-step explanation:

Interpretation of 95% confidence interval : A person can be about 95% confident that the true population parameter lies in the interval.

A confidence interval is constructed for an unknown population proportion, p. A sample is collected, and the 95% confidence interval is calculated to be 0.40 ± 0.06.

i.e. Lower limit = $0.40-0.06=0.34$

Upper limit = $0.40+0.06=0.46$

i.e. 95% confidence interval = (0.34, 0.46)

i.e. A person can be about 95% confident that the true population proportion (p) lies in the interval (0.34, 0.46).

⇒ It is most accurate to say that there is approximately 95% confidence in the assertion that:

The population proportion is between 0.34 and 0.46 .

6 0

3 years ago

I"m actually begging you to help

Rufina [12.5K]

Answer:

(Square, Right Triangle)

18 meters²

Step-by-step explanation:

You can divide the shape into a square and right triangle, see the attachment :)

The area of the square is the length times the width. So,

3 · 3 = 9

The area of the square is 9 m².

The triangle's area is the base times the height divided by 2. So,

6 · 3 = 18

18 / 2 = 9

The triangle has an area of 9 m².

Add these together.

9 + 9 = 18

The area is 18 meters².

6 0

3 years ago

Can someone answer Please??

Zarrin [17]

Y=5^x when x is 2.

y=5^2

y=25

Hope this helps!

3 0

4 years ago

Robert wants to put lights around the edge of his deck. The deck is 46 feet long and 23 feet wide. How many yards of lights does

Korolek [52]

46 yards is the answer

5 0

3 years ago

World population at a particular time was 7,11,36,02,566. Can you write it in words in the international numeration system ?

stellarik [79]

Answer:

Seven billion , one hundred thirteen million, six hundred and two thousand , five hundred and sixty six.

Step-by-step explanation:

B, HM TM, M Hth, TTh Th , H T O

7, 1 1, 3 6, 0 2, 5 6 6

Seven billion , one hundred thirteen million, six lac, two thousand , five hundred and sixty six.

Where

B= billion

HM = hundred million

TM = ten million

M = million

HTh = Hundred Thousand

TTh = Ten thousand

Th = thousand

H = hundred

T = tens

O= ones or units

In system international each category in further divided into units, hundreds and thousands.

We see that we have thousand, ten and then hundred thousand .

Similarly we have million, ten and hundred million.

This continues for billions and so on.

6 0

3 years ago