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3 years ago

50 POINTS & BRAINLIEST!! PLEASE HELP!! (Unrelated answers WILL be reported)

Mathematics

1 answer:

solong [7]3 years ago

3 0

Answer:

a) Trained 730 hours

b) 30.42 days

c) 4.35 weeks

Step-by-step explanation:

Hours the dog trained:

2 * 365 = 730

In days:

730/24 ≈ 30.42

In weeks:

30.42/7 ≈ 4.35

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What is a number that is greater than 5 and less than 40, is not divisible by 2, the sum of it's digits is 7 and has exactly 3 f

Doss [256]

Is odd between 5 and 40 is a square number and the digits add to 7.
all the square numbers between there are 9,16, 25, 36
It's not 9, 16 or 36 so it has to be 25

Hope this helps :)

4 0

3 years ago

The y-intercept in the linear equation −2y−4x−6=0 is _[blank]_. will give brainliest

Ronch [10]

Answer:

-3 is the value of the location where the line crosses the y-axis,and is commonly referred in the slope-intercept form of a line "the intercept". Now it may be your teacher expects you to answer this as the point on the plane where the y-intercept occurs, and that should be the point (0, -3). Make sure you follow your teacher's notation.

Step-by-step explanation:

Re-write the equation given in slope=intercept form by isolating the variable "y" on one side of the equation and expressing the rest in slope*x + y-intercet form:

$-2y-4x-6=0\\-4x-6=2y\\y=-2x-3\\$

which tells us that the slope of the line is -2 and it y-intercept is "-3".

Now, watch out because you may be asked to write the actual coordinates of the y-intercept, which are: (0, -3)

giving the x-coordinate 0 and the y-value where the line crosses the y-axis.

7 0

3 years ago

Read 2 more answers

Delta Airlines' flights from Boston to Seattle are on time 70 % of the time. Suppose 6 flights are randomly selected, and the nu

emmainna [20.7K]

Answer:

P(at least 4) = 0.74431

Step-by-step explanation:

Here

Probability of the flights on time is = 70% = 70/100= 0.7

q= 0.3

n= 6

As the probability of success and failure is constant and the n is also fixed then the binomail probability distribution can be used to solve this.

P (x= 4) = 6c4 *(0.7)^4 (0.3)^2= 15*0.2401* 0.09= 0.324135

P (x= 5) = 6c5 *(0.7)^5(0.3)^1= 6*0.16807* 0.3=0.302526

P (x= 6) = 6c6 *(0.7)^6 (0.3)^0= 0.117649P

P (x= 0) = 6c0 *(0.7)^0 (0.3)^6= 0.000729

P (x= 1) = 6c1 *(0.7)^1 (0.3)^5=0.010206

P (x= 2) = 6c 2*(0.7)^2 (0.3)^4=0.059535

P (x= 3) = 6c3 *(0.7)^3 (0.3)^3=0.18522

Probability of at least 4 means that probability of greater than 4 inclusive of 4.

This can be obtained in two ways.

First is by subtracting the probabilities of less than 4.

Second is by adding probabilities greater than 4 including 4.

We get the same answer with any of the two methods used.

P(at least 4) = 1- P(x<4)

= 1- [ 0.000729+ 0.010206 +0.059535+ 0.18522]

= 1- 0.25569

= 0.74431

P (at least 4) = P(x=4) +P(X=5) + P(x=6)

=0.324135+ 0.302526+ 0.117649

=0.74431

7 0

3 years ago

Factor this expression: 12 + 20

liberstina [14]

Answer:

Step-by-step explanation:

12 = 4 × 3

20 = 4 × 5

12 + 20 = 4 × 3 + 4 × 5 = 4 × (3 + 5)

5 0

4 years ago

What is the<br> range of<br> the quiz<br> grades?

FromTheMoon [43]

Answer:

Step-by-step explanation:

In order to find the range, you have to subtract the smallest number from the largest number. 100 - 75 = 25.

Hope this helped!

4 0

3 years ago

Read 2 more answers