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3 years ago

Help me please, you get 50 points. This is easy I just need help

Mathematics

1 answer:

pentagon [3]3 years ago

8 0

Fraction -> Decimal

4/5 = 0.8

1/8 = 0.125

Decimal -> Percent

0.22 * 100% = 22%

0.47 * 100% = 47%

Percent -> Fraction

34% / 100 = 0.34 = 17/50

25% / 100 = 0.25 = 1/4

Fraction -> Percent

1/3 = 0.33... * 100% = 33.3%

2/5 = 0.4 * 100% = 40%

Decimal -> Fraction

0.65 = 65/100 = 13/20

0.4 = 4/10 = 2/5

Percent -> Decimal

81% / 100 = 0.81

4% / 100 = 0.04

Best of Luck!

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3 years ago

Read 2 more answers

Please help <br> What is x=

zepelin [54]

Answer

72°

Step-by-step explanation:

sum of angles of a triangle= 180°

Let, the value of the unknown angle in the triangle be y°

Therefore,

30° + 42° + y° = 180°

or,

72° + y° = 180°

or,

y° = 180° - 72°

or,

y° = 108°

We know that a straight line = 180°

here, AM is a straight line (A till the arrow sign of the line is a straight line, you should have named the last point of the line drawn)

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3 0

2 years ago

Parker drove a total distance of 4 and 1 over 2 miles during the months of June and July. If Parker only drove 1 over 8 of a mil

never [62]

Answer: 4 and 1 over 2 ÷ 1 over 8

Step-by-step explanation:

Given that : Total distance drove by Parker =4 and 1 over 2 miles= $4\frac{1}{2}$ miles

Distance drove by Parker each day = 1 over 8 mile= $\frac{1}{8}$ mile

To find the total number of days , we need to divide the total distance by the distance drove by him in each day.

Thus, the number of days he went driving=4 and 1 over 2 ÷ 1 over 8

5 0

3 years ago

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A newsgroup is interested in constructing a 90% confidence interval for the proportion of all Americans who are in favor of a ne

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Answer:

The 90% confidence interval for the proportion of all Americans who are in favor of a new Green initiative is (0.6247, 0.6923).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

Of the 533 randomly selected Americans surveyed, 351 were in favor of the initiative.

This means that $n = 533, \pi = \frac{351}{533} = 0.6585$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a p-value of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6585 - 1.645\sqrt{\frac{0.6585*0.3415}{533}} = 0.6247$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6585 + 1.645\sqrt{\frac{0.6585*0.3415}{533}} = 0.6923$

The 90% confidence interval for the proportion of all Americans who are in favor of a new Green initiative is (0.6247, 0.6923).

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3 years ago

Julia is allowed to watch no more than 5 hours of television a week. so far this week, she has watched 1.5 hours. write and solv

gulaghasi [49]

<span>X + 1.5 â‰¤ 5 X â‰¤ 3.5 "Julia is allows to watch no more than 5 hours of television" X â‰¤ 5 "She has watched 1.5 hours" X + 1.5 â‰¤ 5 So the inequality to solve is: X + 1.5 â‰¤ 5 Now to solve it, just subtract 1.5 from both sides: X + 1.5 â‰¤ 5 X + 1.5 - 1.5 â‰¤ 5 - 1.5 X â‰¤ 3.5 So Julia can watch up to 3.5 more hours of TV this week.</span>

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3 years ago