Write an equation that is parallel to the line y=3x-5 and passes through the point (-1,2)

Answer:

B; {x|x<-8}

Step-by-step explanation:

Answer:

Rectangular prism          

Step-by-step explanation:

Answer:

D ) the sum of the prices divided by seven

Step-by-step explanation:

The list below shows the prices of T-shirts at a clothing store.

{8, 10, 10, 12, 15, 15, 18}

( 8 + 10 + 10 + 12 + 15 + 15 + 18 ) ÷ 7

Which statement best describes the mean of this set?

D) the sum of the prices divided by 7

The statement best describes the mean of this set is the sum of the prices divided by 7.

Mean of a set of data is defined as the average of all the values. It gives the exact middle point of the data set.

Mean of a set of data can be found by adding all the values of the data set and by dividing by the total number of values in the data set.

Given data set is the prices of T-shirts at a clothing store.

{8, 10, 10, 12, 15, 15, 18}

Mean of the data set = Sum of the prices/ Total number of values

Sum of the prices = 8 + 10 + 10 + 12 + 15 + 15 + 18 = 88

Total number of value in the set = 7

Mean = 88 / 7 = 12.574

Hence the mean can be found by adding up all the prices divided by 7.

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Answer:

2hrs and 36 mins that is the answer

Answer:

2 hrs 12 mins

Step-by-step explanation:

both trains are effectively getting 190 miles away from one another per hour. If you divide 418 miles by the 190 miles per hour, you get 2.2 hours.

Answer:

[tex](\frac{2}{5})c[/tex]

Answer:2/5c

Step-by-step explanation:

(a+b)/(a-b) =c

(a-b)/(a+b)=1/c

Multiply both sides by 2/5

2/5 x (a-b)/(a+b)=2/5 x 1/c

2(a-b)/5(a+b)=2/5c

Answer:

2x^2 -5x +5

Step-by-step explanation:

f(x)=2x^2-8x+6 and g(x)=3x-1

f(x)+g(x)  = 2x^2-8x+6 +3x-1

Combine like terms

             = 2x^2 -5x +5

Answer:

2x^2 -5x +5

Step-by-step explanation:

Answer:

Octagon regular.

Step-by-step explanation:

This shape has 8 sides to it is an octagon. A octagon irregular doesn't have equal sides while this one does. The best way to tell is if it looks like a stop sign which are octagon regular.

Answer:

1/6

Step-by-step explanation:

3/6 for even 3/6*2/6-----1/2*1/3

Answer: x - 8

Step-by-step explanation:

Factor it and you'll be fine.

Answer:

0.072

Step-by-step explanation:

Answer:0.072

Step-by-step explanation:

7.2% = 7.2/100

7.2 ➗ 100=0.072

Answer:

[tex]x=\frac{3}{2}\\ y=\frac{1}{2}[/tex]

Step-by-step explanation:

[tex]y=-x+2\\y=3x-4[/tex]

Let's solve one of them for x.

[tex]y=3x-4[/tex]

Add 4

[tex]y+4=3x[/tex]

Divide by 3.

[tex]x=\frac{y+4}{3}[/tex]

Now, plug the value of y in the formula, or you can plug the value of x in the other equation. I'll take this one.

[tex]x=\frac{y+4}{3}[/tex]

[tex]x=\frac{(-x+2)+4}{3}[/tex]

[tex]x=\frac{-x+2+4}{3}[/tex]

[tex]x=\frac{-x+6}{3}[/tex]

Multiply by 3 to get rid of the denominator.

[tex]3x=-x+6[/tex]

add x

[tex]3x+x=6[/tex]

Combine like terms;

[tex]4x=6[/tex]

Divide by 4.

[tex]x=\frac{6}{4}[/tex]

Simplify.

[tex]x=\frac{3}{2}[/tex]

Now that you found the value of x, replace it in any of the equations to find y.

[tex]y=-x+2\\y=-(\frac{3}{2})+2\\ y=-\frac{3}{2}+2[/tex]

[tex]y=\frac{-3+2*2}{2} \\y=\frac{-3+4}{2} \\y=\frac{1}{2}[/tex]

Proof:

[tex]y=3x-4\\\frac{1}{2}=3(\frac{3}{2})-4\\\frac{1}{2}=(\frac{9}{2})-4[/tex]

[tex]\frac{1}{2}=\frac{9-4*2}{2}[/tex]

[tex]\frac{1}{2}=\frac{9-8}{2}[/tex]

[tex]\frac{1}{2}=\frac{1}{2}[/tex]

Answer:B.104 feet squared

Step-by-step explanation:

First find the area of the rectangle 11×10=110 then find the area of the window 3×2=6 then subtract 110-6=104

Answer:

B

Step-by-step explanation:

Answer:

300%

Step-by-step explanation:

3 times 250 is 750

Answer:

Melinda will pass Jackson 3 hours after she leaves.

They will have traveled 210 miles.

Step-by-step explanation:

We need to build linear functions for their positions starting at 9 am.

We choose 9 am because it is the time of the last person leaving.

Melinda:

Leaves at 9 (from position 0).

Averages 70 mph.

So

[tex]y_{M}(t) = 70t[/tex]

Jason:

Leaves at 8:30, 60 mph.

At 9, when Melinda leaves, 30 minutes(half an hour will have passed). He will be at the position 0.5*60 = 30. So

[tex]y_{J}(t) = 30 + 60t[/tex]

How long after Melinda leaves will she pass Jason

This is t for which:

[tex]y_{M}(t) = y_{J}(t)[/tex]

[tex]70t = 30 + 60t[/tex]

[tex]10t = 30[/tex]

[tex]t = \frac{30}{10}[/tex]

[tex]t = 3[/tex]

Melinda will pass Jackson 3 hours after she leaves.

How far will they each have traveled?

Either [tex]y_{M}(3)[/tex] or [tex]y_{J}(3)[/tex]. They are the same value.

[tex]y_{M}(3) = 70*3 = 210[/tex]

They will have traveled 210 miles.

Answer:

Melinda will pass Jackson 3 hours after she leaves.  

They will have traveled 210 miles.

Step-by-step explanation:

Answer: 64 yards I think

Step-by-step explanation:

Answer: If it's just 8 feet wide, 64 yards, if 8 and 1/2, 68 yards.

Step-by-step explanation:

Answer: Per 1/2 an hour it is changes by 5 so the constanT rate would be: 5 inches per 1/2 an hour

Answer:

For the first city, the 95% confidence interval would be:

28,900 +/- 2300 x 3 = 28,900 +/-6900$

For the second city, the 95% confidence interval would be:

30,300 +/- 2100 x 3 = 30,300 +/- 6300$

Answer:

A. -4

C. 3

Step-by-step explanation:

x² + x - 12 =0

-12 = 4*(-3) and 4+(-3) =1

(x+4)(x-3)=0

x = - 4, x = 3

Answer:

14+7=21

The probability is 21/32 or 65,625%

Step-by-step explanation:

You just add the number of girl students (including the ones that got an A) with the number of boys that got an A

Then you divide that number by the total of students (32)

The probability of choosing a girl or an A grade student is 19/32.

Probability is the chance or possibility to occur any selected event.

If the number of possible outcomes of an event is divided by the total number of outcomea of the event then it is called probability of that particular event.

In a maths class,

The total number of students = 32

No. of boys = 18 & no. of girls = 14

On an unit test, 5 boys made an A grade whereas 7 girls made an A grade.

The probability of choosing a girl = 14/32 = P(A) (say)

And, The probability of choosing an A grade student = 12/32 = P(B) (say)

Hence, the probability of choosing an A grade student who is a girl = P(A∩B) = 7/32

∴ The probability of choosing a girl or an A grade student =

P(A∪B) = P(A)+P(B)-P(A∩B)

            = 14/32+ 12/32-7/32

            = 26/32-7/32

            = 19/32

Hence, The required probability is 19/32.

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Answer:

  1024 pi

Step-by-step explanation:

The area formula is ...

  A = πr^2

So, the radius is ...

  r = √(A/π)

For the given area, the radius of the cylinder is ...

  r = √(64π/π) = 8 . . . . cm

The height is said to be twice this value, so is 16 cm.

__

The volume of the cylinder is found from ...

  V = Bh

where B is the base area and h is the height. Our cylinder has a volume of ...

  V = (64π cm^2)(16 cm) = 1024π cm^3

Answer:

It reduces the amount of unknowns needed for modeling.

Step-by-step explanation:

Let's first look at the characteristics of poisson distribution.

The Poisson distribution has the following characteristics:

1. It is a discrete distribution.

2. The occurrences in each interval can range from zero to infinity.

3. Each occurrence is very independent of the other occurrences.

4. It helps describes discrete occurrences over an interval.

5. It reduces the amount of constant and unknown needed for modeling an equation.

Answer:

AAA

Stp-by-step explanation:

Answer:

In the figure attached, the graph of the function is shown.

1. f(9) ≈ 6 means that at t = 9 (year 1977 + 9 = 1986) the cost to produce 1 watt of solar energy was $6

2. f(4) ≈ 25, which means at year 1981 (=1977 + 4) the cost was $25 per watt  

f(3.5) ≈ 28, which means at half of year 1980 (=1977 + 3.5) the cost was $28 per watt  

3. When f(t) = 45, t is equal to 2, which means that the year wass 1979 (= 1977 + 2)

4. From the graph we can compute the following table:

x  |  y

0  |  80

1   |  60

The general exponential decay formula is:

f(x) = a*b^x

where a is the initial value and b si the decay factor. Replacing with data from the table:

f(0) = a*b^0

80  = a

f(1) = a*b^1

60/80 = b

0.75 = b

Answer:

what question is this

please explain more

Step-by-step explanation:

Answer: The slope is 12 pounds per day.

Step-by-step explanation:

They consumed 60 pounds on food in 5 days.

The slope or rate at which they consummed the in a day can be calculated as the amount of pounds consumed in the lapse of time, this is:

slope = 60pounds/5days = 12 pounds per day.

Answer:

f(-2)=  -2f

Answer: -2f

Slope of -2f: m= -2

Inverse of -2f: -f/2

Step-by-step explanation:

1: Simplify

2: Domain of -2f

3: Range of -2f

4: Parity of -2f: Odd

5: Axis interception points of -2f: X intercepts: (0,0), Y intercepts: (0,0)

Plotting: y= -2 x

Hope this helps.

Answer:

it is negative four (-4)    

Step-by-step explanation:

i got it correct on edg!

An integer to represent the situation is -4.

A number line is a representation of real numbers in the form of a graded straight line, it can be vertical or horizontal.

Given that, the driver is 4 meters below sea level.

Let the origin represents the sea level, then 4 meters below sea level can be represented by -4.

Hence, an integer to represent the situation is -4.

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Answer:

10

Step-by-step explanation:

3+2 = 5

5x2 (Because only half cups)

= 10

Answer:

You don't need experiments to ask people questions

Answer:

Step-by-step explanation:

Hello!

To arrange the data in a frequency table you have to determine the class intervals first. Normally you'd choose the number of intervals you want to work with and then calculate the class width by dividing the number ob observations, n, by the number of intervals, then, starting from the minimum value as the lower limit of the first interval, you add the width to calculate the upper interval. For the next interval, you use the upper limit from the previous one and add the width to determine the upper limit, and so on until you reach the desired number of intervals.

For this exercise the width was determined 0.50 and the lower limit for the first interval 0.00:

1st interval: 0.00+0.50= 0.50: [0.00; 0.50)

Then:

[0.50; 1.00)

[1.00; 1.50)

[1.50; 2.00)

[2.00; 2.50)

[2.50; 3.00)

Next is to arrange the data from least to greatest and count how many fit in each interval:

0 , 0,09, 0,18, 0,24, 0,31, 0,36, 0,39, 0,39, 0,41, 0,45, 0,55, 0,55, 0,63, 0,64, 0,64, 0,64, 0,64, 0,64, 0,69, 0,69, 0,71, 0,71, 0,73, 0,74, 0,78 ,0,79, 0,79, 0,79 ,0,83, 0,83, 0,83 , 0,85, 0,89, 0,91, 0,92, 0,92, 0,93,0,94, 0,98, 0,98 ,0,99, 0,99, 0,99,0,99, 1,01, 1,01, 1,01, 1,01, 1,22, 1,23,1,24, 1,24 , 1,24, 1,25 ,1,,25 , ,1,25,1,26 , 1,26, 1,27, 1,28 ,1,31 , 1,33 , 1,34 , 1,34 ,, 1,35, 1,35 , 1,38 , 1,39 , 1,41 , 1,42 , 1,42 , 1,43 , 1,44 , 1,44 , 1,45 , 1,46 , 1,49 , 1,49 , 1,56 , 1,56 , 1,62 , 1,63 , 1,65 , 1,65 , 1,75 , 1,77 , 1,78 , 1,78 , 1,82 , 1,85 , 1,96 , 1,98 , 2,19 , 2,21 , 2,23 , 2,24 , 2,47 , 2,49 , 2,95 , 2,97

See frequency table in attachment alongside with original data.

To check the distribution of the data I've made a QQ-plot with the Normal Quartiles (2nd attachment)

As you can see the Magnitude data is well-adjusted to the theoretical line for the normal distribution, this means that it is most likely that the data has a normal distribution.

I hope this helps!