Ask question

Ask question

All categories

2 years ago

10

Melissa practiceted piano for 5/6 of an hour. On Monday and 8/9 of an hour on Tuesday. How many more minutes did she practice on

Tuesday compared to monday

2 answers:

Sindrei [870]2 years ago

4 0

She practiced 1/18 of hour more on Tuesday than on Monday

Charra [1.4K]2 years ago

3 0

Answer:

24 hrs

Step-by-step explanation:

99594iu58

You might be interested in

Past records indicate that 15 percent of the flights for a certain airline are delayed. Suppose flights are randomly selected on

Zarrin [17]

Answer:

a. 0.0783

Step-by-step explanation:

For each flight, we have these following probabilities:

A 15% probability that a flight is delayed

An 85% probability that a flight is on time.

Which of the following is closest to the probability that it will take 5 selections to find one flight that is delayed?

This is the probability that the first four flights are on time and the fifth is late. So

$P = 0.85*0.85*0.85*0.85*0.15 = 0.0783$

So the correct answer is

a. 0.0783

3 0

2 years ago

WILL GIVE BRAINLIEST!!!

timofeeve [1]

Answer:

$y=448-28x$

Step-by-step explanation:

Let x be the number of miles.

We have been given that Sully's car has an average fuel economy of 28 miles per gallon. The capacity of the fuel tank is 16 gallons.

Let us find the number of miles that Sully can drive with 16 gallons.

$\text{Number of miles Sully can drive}=\text{16 gallons}\times \frac{\text{28 miles}}{\text{gallon}}$

$\text{Number of miles Sully can drive}=\text{16}\times \text{28 miles}$

$\text{Number of miles Sully can drive}=448\text{ miles}$

This means that initially Sully's car has can drive 448 miles, so at x equals 0, y will be 448.

As the car consumes 1 gallon for each 28 miles driven, so the gallons of fuel consumed in traveling x miles will be 28x. As each gallon of fuel will decrease with each 28 miles traveled, so slope of our function will be -28.

Upon substituting slope and y-intercept in slope-intercept form (y=mx+b), we will get our function as:

$y=448-28x$

Therefore, our required function will be: $y=448-28x$ .

4 0

2 years ago

Read 2 more answers

HIJK is a parallelogram because the midpoint of both diagonals is ____ which means the diagonals bisect each other.

just olya [345]

ANSWER

The midpoint of both diagonals is

$(1,0)$
EXPLANATION

We can use either diagonals to determine the midpoint.

We use the midpoint formula

$( \frac{x_1 + x_2}{2} , \frac{y_1 + y_2}{2} )$

Let us use the first diagonals H(-2,2) and J(4,-2)

$( \frac{ - 2 + 4}{2} , \frac{ - 2+ 2}{2} )$

$( \frac{ 2}{2} , \frac{ 0}{2} )$

$( 1, 0)$

Using the second diagonals also gives,

$( \frac{ - 2 + 4}{2} , \frac{ - 3+ 3}{2} )$

$( \frac{ 2}{2} , \frac{ 0}{2} )$

$( 1, 0)$

4 0

2 years ago

Read 2 more answers

A tin of paint covers a surface area of 50m2. Each tin costs £5.60. The entire surface of a solid cylindrical rod with diameter

bearhunter [10]

the answer is in the picture

5 0

2 years ago

The amount of soft drink in a bottle is a Normal random variable. Suppose that in 7% of the bottles containing this soft drink t

WITCHER [35]

Answer:

The mean is 15.93 ounces and the standard deviation is 0.29 ounces.

Step-by-step explanation:

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

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

$Z = \frac{X - \mu}{\sigma}$

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.

7% of the bottles containing this soft drink there are less than 15.5 ounces

This means that when X = 15.5, Z has a pvalue of 0.07. So when X = 15.5, Z = -1.475.

$Z = \frac{X - \mu}{\sigma}$

$-1.475 = \frac{15.5 - \mu}{\sigma}$

$15.5 - \mu = -1.475\sigma$

$\mu = 15.5 + 1.475\sigma$

10% of them there are more than 16.3 ounces.

This means that when X = 16.3, Z has a pvalue of 1-0.1 = 0.9. So when X = 16.3, Z = 1.28.

$Z = \frac{X - \mu}{\sigma}$

$1.28 = \frac{16.3 - \mu}{\sigma}$

$16.3 - \mu = 1.28\sigma$

$\mu = 16.3 – 1.28\sigma$

From above

$\mu = 15.5 + 1.475\sigma$

So

$15.5 + 1.475\sigma = 16.3 – 1.28\sigma$

$2.755\sigma = 0.8$

$\sigma = \frac{0.8}{2.755}$

$\sigma = 0.29$

The mean is

$\mu = 15.5 + 1.475\sigma = 15.5 + 1.475*0.29 = 15.93$

The mean is 15.93 ounces and the standard deviation is 0.29 ounces.

6 0

2 years ago