what’s the correct answer for this?

Answer:

1 hour and 40 min

Step-by-step explanation:

4 x 1 x 2.5=5/3=1 2/3=1 hr and 40 min

Answer:

  0.33%

Step-by-step explanation:

The account value when principal P is compounded continuously at annual rate r for t years is given by ...

  A = Pe^(rt)

For the given values, we can solve for r:

  4193.89 = 4125e^(r·5)

We can divide by 4125, take the natural log, then divide by the coefficient of r to find the value of r:

  ln(4193.89/4125)/5 = r ≈ 0.33%

The interest rate is about 0.33%.

Answer:

1570f³t

Step-by-step explanation:

V=πr²h

V=3.14×10²×5

V=3.14×100×5

V=314×5

V=1570

Answer:

(a)

[tex]\left|\begin{array}{c|c|c}---&---&---\\x&\$0&\$3\\---&---&---\\P(x)&\dfrac13&\dfrac23\\---&---&---\\\end{array}\right|[/tex]

(b)$2

Step-by-step explanation:

In the given game of rolling a die. these are the possible winnings.

There are 6 sides in the die.

[tex]P($obtaining a 1,2,4 or 6)=\dfrac46=\dfrac23\\P($obtaining a 3 or 5)=\dfrac26=\dfrac13[/tex]

(i)The probability distribution of x.

Let x be the amount won

Therefore:

Probability distribution of x.

[tex]\left|\begin{array}{c|c|c}---&---&---\\x&\$0&\$3\\---&---&---\\P(x)&\dfrac13&\dfrac23\\---&---&---\\\end{array}\right|[/tex]

(ii) Expected amount of dollar won

Expected Amount

[tex]=\sum x_iP(x_i)\\=(0*\dfrac13)+(3*\dfrac23)\\=\$2\\[/tex]

You would expect to win $2.

Answer:

H = 1/30

H = 0.0333

0.033

Step-by-step explanation:

The time spent waiting at a traffic light can be considered a random variable with values from 0 seconds,

it’s green when you approach and can go on through, to 30 seconds with the following distribution shape

The entire area under the distribution curve must be 1.

Let assume the Shape is rectangle

Given

Time taken from 0s to 30s = 30s - 0s = 30s

To find height of the distribution?

Let H = the height of the distribution

Based on the above assumption;.

H * 30 = 1 --- make H the subject of formula

H = 1/30

H = 0.0333

To three decimal places is 0.033

Answer:

1. 5 packets

2. 3/8

1. 4/5 to 16/20

1/4 to 5/20                                

1/10 to 2/20

16- (2*5)= 16-10= 6                                

6/2 = 3 packets

2 pack.+3 pack.= 5 packets

2. 1/2= .5

.5*3/4=.375

.375=3/8

Answer:

A.

Step-by-step explanation:

In the attached file

Answer:

Volume of water and air is 3,000 mm³

Step-by-step explanation:

Given:

Length of base = 15 mm

Width of base = 20 mm

Height of figure = 30 mm

Find:

Volume of water and air is inside each of the plastic ice cubes.

Computation:

Height of each rectangular pyramid = Height of figure / 2

Height of each rectangular pyramid = 30 / 2

Height of each rectangular pyramid = 15 mm

Volume of each rectangular pyramid = lbh / 3

Volume of each rectangular pyramid = [15 × 20 × 15] / 3

Volume of each rectangular pyramid = [4,500] / 3

Volume of each rectangular pyramid = 1,500 mm³

Volume of water and air is inside each of the plastic ice cubes = 2 × Volume of each rectangular pyramid

Volume of water and air is inside each of the plastic ice cubes = 2 × 1,500

Volume of water and air is inside each of the plastic ice cubes = 3,000 mm³

Answer:

416

Step-by-step explanation: pues creo que esa es tu respuesta :)

Answer:

The null and alternative hypothesis in symbols would be:H0:μ=0.9

H1:μ≠0.9,

The null hypothesis in words would be:_____________.

1. The proportion of all people that prefer Trydint gum is 0.9

Step-by-step explanation:

The Null hypothesis should always be precise such as the given coin is biased. The null hypothesis is assigned a numerical value.

For example the average height of all students in a college is 62 inches. Symbolically it is written as :H0:μ=62

An alternative hypothesis is any other hypothesis which we accept when the null hypothesis is rejected.If the null hpothesis of the height of students is :H0:μ=62 then alternative hypothesis is H1:μ≠ 62

Answer:

H0: p = 0.9

H1: p ≠ 0.9

1. The proportion of all people that prefer Trydint gum is 0.9

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

For the case above;

The null hypothesis is that the proportion of all people that prefer Trydint gum is 0.9.

H0: p = 0.9

The alternative hypothesis is that the proportion of all people that prefer Trydint gum is not equal to 0.9.

H1: p ≠ 0.9

Answer:

The margin of error for the​ 95% confidence interval for the population proportion is of 0.0287.

Step-by-step explanation:

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

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

The margin of error is:

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

Find the margin of error for the​ 95% confidence interval for the population proportion.

We have that [tex]n = 820, p = 0.227[/tex]

So

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]M = 1.96\sqrt{\frac{0.227*0.773}{820}} = 0.0287[/tex]

The margin of error for the​ 95% confidence interval for the population proportion is of 0.0287.

Answer:

15.3 litres

Step-by-step explanation:

You can do this many different ways, but this is how i did it:

1) I'm going to find how much gas it takes to travel just 1 km.

So, to drive for 1 km, I only need 18/420 litres of gas.

*you can solve this, but you'll just get a really long decimal, so i find it easier just to keep it as a fraction until i'm at the end of solving.

2) Now times the amount of petrol it takes to travel 1 km by 357, to find the final answer.

18/420 x 357 = 15.3 litres

Hope that helped : )

Answer:

7

Step-by-step explanation:

Work backwards:

(37-9)÷4=input

28÷4=input

input=7

The input was 7

Answer:

57.39% probability that between 50 and 60 of them were in favor of leaving the U.K.

Step-by-step explanation:

I am going to use the normal approximmation to the binomial to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

[tex]E(X) = np[/tex]

The standard deviation of the binomial distribution is:

[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that [tex]\mu = E(X)[/tex], [tex]\sigma = \sqrt{V(X)}[/tex].

In this problem, we have that:

[tex]n = 135, p = 0.38[/tex]

So

[tex]\mu = E(X) = np = 135*0.38 = 51.3[/tex]

[tex]\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{135*0.38*0.62} = 5.6397[/tex]

What is the probability that between 50 and 60 of them were in favor of leaving the U.K.?

Using continuity correction, this is [tex]P(50-0.5 \leq X \leq 60 + 0.5) = P(49.5 \leq X \leq 60.5)[/tex]. So this is the pvalue of Z when X = 60.5 subtracted by the pvalue of Z when X = 49.5. So

X = 60.5

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{60.5 - 51.3}{5.6397}[/tex]

[tex]Z = 1.63[/tex]

[tex]Z = 1.63[/tex] has a pvalue of 0.9484

X = 49.5

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{49.5 - 51.3}{5.6397}[/tex]

[tex]Z = -0.32[/tex]

[tex]Z = -0.32[/tex] has a pvalue of 0.3745

0.9484 - 0.3745 = 0.5739

57.39% probability that between 50 and 60 of them were in favor of leaving the U.K.

Answer:

16.666%

Step-by-step explanation:

100/6=16.66

Answer:

Step-by-step explanation:

Let n be a random variable that represents the first Jonathan apple chosen at random that has bitter pit.

a) P(X = n) = q(n-1)p, where q = 1 - p.

From the information given, probability if success, p = 12.6/100 = 0.126

b) for n = 3, the probability value from the geometric probability distribution calculator is

P(n = 3) = 0.096

For n = 5, the probability value from the geometric probability distribution calculator is

P(n = 5) = 0.074

For n = 12, the probability value from the geometric probability distribution calculator is

P(n = 12) = 0.8

c) For n ≥ 5, the probability value from the geometric probability distribution calculator is

P(n ≥ 5) = 0.58

d) the expected number of apples that must be examined to find the first one with bitter pit is the mean.

Mean = 1/p

Mean = 1/0.126 = 7.9

Approximately 8 apples

Answer:

See below

Step-by-step explanation:

Given polynomial is: [tex] 17x^2 - x[/tex]

a. Terms: [tex] 17x^2, \: \&\: - x[/tex]

b. 17 and - 1

c. Binomial or quadratic polynomial

Answer:

D : {3,5,7,9}

Step-by-step explanation:

The domain is the input to the function or in this case the x values

D : {3,5,7,9}

_________________________________

Hey!!!

Answer:

Domain:{3,5,7,9}

Explanation:

Let R be a relation from A to B.Then the set of first components or the set of elements of A are called domain.

Hope it helps

Good luck on your assignment

________________________________

Answer:

Step-by-step explanation:

The relevant relation is that the product of distances from the point of intersection of secants to the two points of intersection of each with the circle is a constant. The point of tangency counts as both points of intersection.

__

By way of example, the product of distances to the circle for the tangent segment is 10·10 = 100

This is also the product of the distances on the secant that intersects the tangent:

  100 = 5(5+x+9)

  20 = x +14 . . . . . divide by 5

  x = 6 . . . . . . . . . . subtract 14

__

The same is true when the secants intersect inside the circle:

  6·9 = y·3

  y = 18 . . . . . . divide by 3

Answer:

$203.04

Step-by-step explanation:

First, you have to calculate the cost of sending one free sample and you could use a rule of three to find it:

23 onces → $0.36

69 onces →     x

x=(69 onces*$0.36)/23 onces= $1.08

Then, you can multiply the cost of sending one free sample for the quantity of samples Instant Meals wants to mail out:

$1.08*188= $203.04

According to this, the answer is that Instant Meals would spend $203.04 on postage to mail out one hundred eighty-eight samples.

Answer:

420 Square Units

Step-by-step explanation:

7*12*5 = 420 units

Answer:

Step-by-step explanation:

The area of the square garden=[tex]267$ ft^2[/tex]

Area of a Square of Side length s [tex]=s^2[/tex]

Therefore:

[tex]s^2=267$ ft^2\\$Take the square root of both sides\\s=\sqrt{267} \\$Side Lenght, s=16.34 ft (to the nearest hundredth place)[/tex]

Perimeter

Perimeter of a Square of Side length s=4s

Therefore, the perimeter of the garden =4*16.34=65.36 ft

Since 65 ft < 65.36 ft

Therefore, if you had 65 ft of fencing, it will not be enough to go around and cover the garden.

Answer:

x = 9

Step-by-step explanation:

First, we want to isolate variable x on the left side of the equation. We can do this by adding 13 to both sides.

x - 13 + 13 = - 4 + 13

x = 9

Answer:

[tex]x=9[/tex]

Step-by-step explanation:

to find the answer, add 13 to both sides of the equation.

[tex]x-13=-4\\ +13 = +13 \\x=9[/tex]

Answer:

Step-by-step explanation:

Hello,

[tex]\Delta = 2^2-4*3*(-4)= 4+48=52[/tex]

so the two solutions are

[tex]\dfrac{-2+2\sqrt{13}}{2*3}=\dfrac{\sqrt{13}-1}{3}=0.87\\\\\dfrac{-2-2\sqrt{13}}{2*3}=-\dfrac{\sqrt{13}+1}{3}=-1.54\\\\[/tex]

Answer:

  6500 lb

Step-by-step explanation:

The load limit of the bridge is ...

  (5000 kg)(2.2 lb/kg) = 11,000 lb

The total of truck and trailer cannot exceed this value, so the trailer's weight cannot exceed ...

  11,000 lb -4,500 lb = 6,500 lb . . . max trailer weight

Answer:

i need points sorry

Step-by-step explanation:

nfefgrn

Answer:

the weight of 1 textbook is 2 pounds

the weight of 1 game is about 0.5 pounds

Step-by-step explanation:

1/2 of 2 = 0.5 pounds

0.5 times 8 (games) = 4

22 - 4 = 18

18 divided by 9 (textbooks) = 2 pounds

Answer:

Each game is 0.5 pounds and each textbook is 2 pounds.

Step-by-step explanation:

If x represents games and y represents textbooks you can use the equation

6x + 9y = 21

we know that if the box was 21 pounds and she adds two games and it's now 22 pounds that each game is 0.5 pounds so x = 0.5

after plugging in the x value the equation is:

3 + 9y = 21

Combine like terms and it's 9y = 18

Divide 18 by 9 and you get:

Y= 2

Hope this helps! Good luck on your test.