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fenix001 [56]
3 years ago
10

Write a real world problem that can be modeled by the equation 1/3x +10 = 3/5x

Mathematics
1 answer:
kozerog [31]3 years ago
5 0
Idk how to put it in words for you to understand
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A recent Gallup poll found that 36% of U.S. teens aged from 13 to 17 years old have a computer with [(6)] Internet access in the
In-s [12.5K]

Answer:

Step-by-step explanation:

a) The population parameter is the population proportion.

b) Confidence interval is written as

Sample proportion ± margin of error

Margin of error = z × √pq/n

Where

z represents the z score corresponding to the confidence level

p = sample proportion. It also means probability of success

q = probability of failure

q = 1 - p

p = x/n

Where

n represents the number of samples

x represents the number of success

From the information given,

n = 1028

p = 36/100 = 0.36

q = 1 - 0.36 = 0.64

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.99 = 0.1

α/2 = 0.01/2 = 0.005

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.05 = 0.995

The z score corresponding to the area on the z table is 2.58. Thus, confidence level of 99% is 2.58

Therefore, the 99% confidence interval is

0.36 ± 2.58 × √(0.36)(0.64)/1028

The lower limit of the confidence interval is

0.36 - 0.039 = 0.321

The upper limit of the confidence interval is

0.36 + 0.039 = 0.399

Therefore, with 99% confidence interval, the proportion of U.S. teens aged from 13 to 17 years old that have a computer with Internet access in their rooms is between 0.321 and 0.399

c) for a margin of error of 1%, that is 1/100 = 0.01, then

0.01 = 2.58 × √(0.36)(0.64)/n

0.01/2.58 = √0.2304/n

0.00387596899 = √0.2304/n

Square both sides

0.00001502314 = 0.2304/n

n = 0.2304/0.00001502314

n = 15336

5 0
3 years ago
I NEED HELP WITH THIS HELP PLS!!!!
motikmotik

Answer:

120

Step-by-step explanation:

Volume =lxbxh

=5 x 6 x 4

=120

4 0
2 years ago
Hi there! Can someone help me with this, i need a proper answer, i don't need LINKS or FILES for the explanations.
alexira [117]

Answer:

<u>Using below system of inequalities</u>

  • y > 2x - 3
  • y < x + 1

<u>Following the rules </u>

  • 1. Finding x- and y - intercepts
  • 2. Connecting with dotted line for each as no equal symbol present in any inequality
  • 3. Shade respective regions
  • 4. Solution is the intersection of the shades regions
  • 5. Select any three points in the solution region

<u>Line 1</u>

  • y > 2x - 3
  • x- intercept: y = 0 ⇒ 0 = 2x - 3 ⇒ 2x = 3 ⇒ x = 1.5
  • y - intercept: x = 0 ⇒ y = -3
  • Shaded region is above the line (or to the left)

<u>Line 2</u>

  • y < x + 1
  • x- intercept: y = 0 ⇒ 0 = x + 1 ⇒ x = -1
  • y - intercept: x = 0 ⇒ y = 1
  • Shaded region is below the line (or to the right)

<u>Selected points are:</u>

  • (-1, -1), (1, 1), (2, 2)

4 0
3 years ago
A dog buries a bone −1 5/6 inches into the dirt. The dog buries another bone −1 3/4 inches into the dirt. Which bone is buried d
Luden [163]
I did this test to it’s 1 5/6
3 0
3 years ago
Which are equivalent to each other 6a-4a+2, 2+5a+5a and 9a+a+2 WHO EVER ANSWERS I WILL MARK BRAINLIEST
Tanya [424]

Answer:

2+5a+5a and 9a+a+2

Step-by-step explanation:

It is the answer as

6a-4a+2= 2a+2

2+5a+5a= 10a+2

& 9a+a+2= 10a+2

PLEASE MARK ME AS BRAINLIEST!!!

6 0
3 years ago
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