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8090 [49]
3 years ago
8

Minneapolis has a population of 382,578, oakland has a population of 390,724 and wichita has a population of 382,368. Which plac

e could you round to so that the rounded populations of all three cities are different?
Mathematics
2 answers:
OLga [1]3 years ago
8 0
Round to the hundreds place, so the populations are
M=382,500
O=390,700
W=382,300
marin [14]3 years ago
5 0

Answer:

  • Minneapolis has a population of 383,000
  • Oakland has a population of 391,000
  • Wichita has a population of 382,000

Step-by-step explanation:

Minneapolis has a population of 382,578

Oakland has a population of 390,724

Wichita has a population of 382,368

All three cities have 6 places of population.

Round off: If round off digit is more than or equal to 5 then it increases previous digit by 1 .

If round off digit is less than 5 then doesn't change in previous digit.

Round off all population to thousands.

First Round off the number 382,578 to thousands place

382,578 ⇒ hundreds digit is 5. So, thousands place digit will increase by 1

382,578 ⇒ 383,000

390,724 ⇒ hundreds digit is 7. So, thousands place digit will increase by 1

390,724 ⇒ 391,000

382,368 ⇒ hundreds digit is 3. So, thousands place digit will not change.

382,368 ⇒ 382,000

<u>After round off the population:-</u>

  • Minneapolis has a population of 383,000
  • Oakland has a population of 391,000
  • Wichita has a population of 382,000

All three cities are different population.

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Which equation has the greatest positive rate of change?
Rasek [7]

Answer:

y=4x+4

Step-by-step explanation:

It has the biggest slope of the equations of 4, and increases the most.

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2 years ago
Please help! I keep on getting the wrong answer!
valentina_108 [34]

Answer:

CODE: 1977.98

Step-by-step explanation:

A.

(To get the closest answer, round the circumference to the nearest ten thousandth.)

C = 2(3.14)r                      Circumference formula: C = 2πr

C = 2(3.14)(3)

C = 18.84

B.

A = (3.14)r²

A = (3.14)(3)²

A = (3.14)(9)

A ≈ 28.26

C. (It's asking for the circumference.)

C = 2(3.14)r

C = 2(3.14)(58)

C ≈ 364.24

D. (It's a linear pair, which is 180 degrees.)

4x + 2x = 180

6x = 180

x = 30

m∠ABD = 4x

m∠ABD = 4(30)

m∠ABD = 120°

E. (∠GHI & ∠JHK are vertical angles, so they are congruent.)

x + 7 = 3x - 21

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14 = x

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m∠JHK = 3x - 21

m∠JHK = 3(14) - 21

m∠JHK = 42 - 21

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G. (Supplementary - two angles that add up to 180 degrees.)

180 - 84

= 96°

CODE: E(C - D) - F(G - B) - A

CODE: 14(364.24 - 120) - 21(96 - 28.26) - 18.84

CODE: 14(244.24) - 21(67.74) - 18.84

CODE: 3419.36 - 1422.54 - 18.84

CODE: 1977.98

8 0
2 years ago
In a survey, 11 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped
pickupchik [31]

Answer:

The population standard deviation is not known.

90% Confidence interval by T₁₀-distribution: (38.3, 53.7).

Step-by-step explanation:

The "standard deviation" of $14 comes from a survey. In other words, the true population standard deviation is not known, and the $14 here is an estimate. Thus, find the confidence interval with the Student t-distribution. The sample size is 11. The degree of freedom is thus 11 - 1 = 10.

Start by finding 1/2 the width of this confidence interval. The confidence level of this interval is 90%. In other words, the area under the bell curve within this interval is 0.90. However, this curve is symmetric. As a result,

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Look up the t-score of the upper end on an inverse t-table. Focus on the entry with

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This value can also be found with technology.

The formula for 1/2 the width of a confidence interval where standard deviation is unknown (only an estimate) is:

\displaystyle t \cdot \frac{s_{n-1}}{\sqrt{n}},

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For this confidence interval:

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  • s_{n-1} = 14, and
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Hence the width of the 90% confidence interval is

\displaystyle 1.812 \times \frac{14}{\sqrt{10}} \approx 7.65.

The confidence interval is centered at the unbiased estimate of the population mean. The 90% confidence interval will be approximately:

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3 years ago
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Gennadij [26K]
P= 2l+2w

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w= 1/2P -l
8 0
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