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Tems11 [23]
3 years ago
8

How many of the first 10,000 positive integers contain the digit pair “43” in that order?

Mathematics
1 answer:
ollegr [7]3 years ago
8 0
The answer is 2.....
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A survey organization, as part of the United States Census Bureau, conducts a yearly census similar to the one taken every ten y
lyudmila [28]

Answer: $69811

Step-by-step explanation:

Given : A survey organization, as part of the United States Census Bureau, conducts a yearly census similar to the one taken every ten years, but with a smaller percentage of participants.

One of these surveys estimates with 90% confidence that the mean household income in the U.S. falls between $69,702 and $69,920.  (1)

We know that the confidence interval is given by :-

Point estimate of mean  ± Margin of error

From (1) , we have

Point estimate for mean  -Margin of error = $69,702   (2)

Point estimate for mean  +Margin of error = $69,920      (3)

Add (2) and (3), we get

2 (Point estimate for mean) = $139622

Divide both sides by 2, we get

Point estimate for mean=$ 69811

Therefore , the point estimate for mean U.S. household income. =  $ 69811

6 0
3 years ago
Find a ·<br> b. |a| = 4, |b| = 7, the angle between a and b is 2π/3
galben [10]

Answer:

-14

Step-by-step explanation:

a·b = |a|×|b|×cos(angle between them)

= 4×7×(-1/2)

= -14

5 0
3 years ago
the sum of two numbers is 75. The second number is three less than twice the first. what is the larger number?
KatRina [158]

Answer:

49

Step-by-step explanation:

If the smaller number is

x

, then the larger number is

2

x

−

3

Explanation:

(

x

)

+

(

2

x

−

3

)

=

75

3

x

−

3

=

75

3

x

=

78

x

=

26

The numbers are 26 and 49.

5 0
3 years ago
Quinn is a contestant on a quiz show. Quinn's score changes by -15 points for 4 questions in a row. ) What is the total change i
Morgarella [4.7K]

Answer:

Quinn is a contestant on a quiz show. Quinn's score changes by -15 points for 4 questions in a row. ) What is the total change in Quinn's score?

7 0
3 years ago
Politics Post has published a total of 15 articles this month. If 12 of the articles are about candidates for an upcoming electi
vitfil [10]

Answer:

80%

Step-by-step explanation:

12÷15= .8

.8=80%

..............

7 0
3 years ago
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