I really need help, the problem is attached. 20 points!

Answer:

B

Step-by-step explanation:

We want to find the point-slope equation of a line that passes through the points (-1, 4) and (8, -2).

Point-slope form is given by:

[tex]y-y_1=m(x-x_1)[/tex]

Where m is the slope and (x₁, y₁) is a point.

So, let's find the slope of the line first. We can use the slope formula:

[tex]\displaystyle m=\frac{\Delta y}{\Delta x}=\frac{-2-4}{8-(-1)}=\frac{-6}{9}=-\frac{2}{3}[/tex]

We can choose (-1, 4) as our point. So, (x₁, y₁) = (-1, 4).

Substitute:

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

Simplify:

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

Therefore, our answer is B.

Answer:

a.    (x+2)(x+3)

b.   x = -2

     x = -3

Step-by-step explanation:

a.

split 5x into 2x + 3x

then, you get

x² + 2x + 3x + 6

Split into (x² + 2x) + (3x + 6)

factorize individual groups

x (x + 2) + 3 (x + 2)

combine x + 3

your final answer is

(x + 2) (x + 3)

b.

if (x + 2) (x + 3) = 0

then (x+2) = 0 and (x+3) = 0

x + 2 = 0

x = -2

x + 3 = 0

x = -3

Answer:

A)(x+2)(x+3)

B)(x + 2) (x + 3) = 0

x + 2 = 0

x = -2

x + 3 = 0

x = -3

Step-by-step explanation:

hope it helps you see the attachment for further information

Answer:

40[tex]\pi[/tex]

or 125.66 rounded

Step-by-step explanation:

area of triangle:

1/2(b*h)

1/2(8*8)

1/2(64)

=32

area of half circle:

[tex]\pi r^{2}[/tex]/2

[tex]\pi r^{2}[/tex]/2

[tex]\pi 4^{2}[/tex]/2

[tex]\pi16[/tex]/2

[tex]\pi8[/tex] or 8[tex]\pi[/tex]

So, 8[tex]\pi[/tex] + 32=40[tex]\pi[/tex]

Answer:

Lets take a shot at this....

774

Step-by-step explanation:

We know we have 30 rows in the pavillion.  We know we have 20 seats in the first row, and that we add 6 seats to every subsequent row.

Now if we have 30 x 20, then that is the starting numer of seats at 600 and we add 6 seats to each of the remaining 29 rows so we could multiply 29 times 6 for a total of 174 and add that to the original for a total of 774.

However I have a sneaking suspicion I have over simplified by adding jut 6 seats to each row rather than a progressive number where there are 6 added to the second row and then 12 to the thitrd ro and so on and so on.  I am not certain how to calculte that progression into this equation but I suspect it relies upon an exponent for that calculation so I am off to see if I can find it....

more to follow....

Answer:

Your answer is B

Step-by-step explanation:

The lowest number is 4, therefore it cannot be C.

Now you'll have to cross out numbers on both sides and your mean will be 9 because you'll have to add 8 and 10 together and 18 divided by 2 is 9.

Next, put a line between 8 and 10, now the 8 side is the lower quartile and the 10 side is the greater quartile.

For the lower quartile, add 7 and 7 together, divide 14 by 2 and the lower quartile is 7.

For the greater quartile, add 11 and 13 together, that's 24, divide 24 by 2 and that's 12.

Lowest: 4

Mean: 9

Lower quartile: 7

Greater quartile: 12

Highest: 14

Therefore your answer is B and not A or C.

Answer:

Step-by-step explanation:

|3x-9|≤15

-15≤3x-9≤15

-15+9≤3x≤15+9

-6≤3x≤24

-2≤x≤8

x∈[-2,8]

|2x-3|≥5

2x-3≤-5

2x≤-2

x≤-1

and

2x-3≥5

2x≥8

x≥4

solution is x∈[-2,-1]∪[4,8]

Answer:

12 feet is what i believe is the answer

Step-by-step explanation:

Brainleist :)

Answer:

(1,-1)

Step-by-step explanation:

Answer:

The 99% confidence interval for the population mean reduction in anxiety was (1.2, 8.6).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 27 - 1 = 26

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 26 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.99}{2} = 0.995[/tex]. So we have T = 2.7787.

The margin of error is:

[tex]M = T\frac{s}{\sqrt{n}} = 2.7787\frac{6.9}{\sqrt{27}} = 3.7[/tex]

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 4.9 - 3.7 = 1.2.

The upper end of the interval is the sample mean added to M. So it is 4.9 + 3.7 = 8.6.

The 99% confidence interval for the population mean reduction in anxiety was (1.2, 8.6).

Answer: ok so your answer will be 7 so D,

Step-by-step explanation: just follow the simple P.E.M.D.A.S

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

Answer:

https://www.gigacalculator.com/calculators/volume-of-sphere-calculator.php this the link for the marth calculate

find the volume of a sphere. Only a single measurement needs to be known in order to compute the volume of a sphere and that is its diameter. For example, if the diameter is known to be 20 feet, then calculate the volume by using the first formula above to get 4/3 x 3.14159 x (20/2) 3 = 4.1866 x 1000 = 4188.79 ft 3 (cubic feet).

Answer:

Step-by-step explanation:

A

Answer:

A. 11 and -3

Step-by-step explanation:

[tex]\sqrt{47}[/tex] ≈ 7

4 + 7 = 11

4 - 7 = -3

I would answer, but I don’t see the graph. If you add the graph I could help (if you want of course, not trying to be rude. Sorry!)

Answer:

45 degree . my step-by-step solution is in this picture

Answer:

C) 2*18, 3*12, 4*9, 6*6

Step-by-step explanation:

When these number sets are multiplied, all of them equal 36, therefore C is your answer.

Hope this helped! :)

Answer:

4 squared is 16 so 16 times 3.14= 50.24

Step-by-step explanation:

Answer:

4^2 = 16

16 x 3.14 = 50.24 in2

Step-by-step explanation:

Formula of area of a circle:

π x r^2(radius being squared)

To make it more easier:

3.14 or 22/7 x radius^2

Some keywords:

Radius: Half of your diameter or given radius

Radius Squared: Your radius squared, your radius to the power of 2.

Pi: 3.14 or 22/7 depending on what they tell you to use for pi

Answer:

1.2km is 400% of 300m

Step-by-step explanation:

1 km=1000m

So,1.2 km=1000*1.2=1200m

Let 1.2km(or 1200m) be x% of 300 m

By the problem,

300*x/100 = 1200

Or, 3x=1200

Or,x=1200/3=400

1.2km is 400% of 300m

Hi there!  

»»————-　★　————-««

I believe your answer is:  

The expressions given are not equivalent.

»»————-　★　————-««  

Here’s why:  

⸻⸻⸻⸻

[tex]\boxed{3(a+2B)}\\\\---------\\\rightarrow3*a = 3a\\\\\rightarrow3 * 2B = 6B\\\\\text{Therefore:}\\\\3(a+2B)=\boxed{3a+6B}\\\\\text{and}\\\\\boxed{3(a+2B)\neq 3a+3B}[/tex]

⸻⸻⸻⸻

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

Answer:

False

[tex]3(a + b) ≠ 3a+6b[/tex]

Step-by-step explanation:

[tex]3a + 3b \\ 3(a) + 3(b) \\ 3(a + b)[/tex]

[tex]3(a + 2b) \\ 3a+3(2b) \\ 3a+6b[/tex]

Answer:

2

Step-by-step explanation:

4 people and 6 pretzels.

If you buy 2 packs you get 12 pretzels and each person gets 3

Answer:

hmmmm

Step-by-step explanation:

Cone

The volume of a cone is linked to the volume of a cylinder. A cone is one third of the volume of a cylinder. The volume of a cone is ¹/₃ × π × r² × l. To calculate the volume we multiply these values together. The answer will be written in units³.

Sphere

The volume of a sphere is ⁴/₃ × π × r³. To calculate the volume we multiply these values together. The answer will be written in units³.

Cylinder

The volume of a cylinder is π × r² × l (r is the radius of the circle and l is the length of the cylinder). To calculate the volume we multiply these values together. The answer will be written in units³. It is more accurate to use π = 3.142 or the π button on a calculator.

   A cone is a 3D shape with 2 faces and one edge

   A sphere is a 3D shape. It has one continuous face and no edges

   A cylinder is a type of prism. It has 3 faces and 2 edges

website I used: https://www.bbc.co.uk/bitesize/topics/zrf3cdm/articles/ztqsdxs

I hope this helped!

9514 1404 393

Answer:

  -210° is a 2nd quadrant angle

  -210 radians is a 3rd quadrant angle

  -21° is a 4th quadrant angle

Step-by-step explanation:

If we assume you want the quadrant of the terminal ray of a standard-position angle whose measure is -210 degrees, then we can find the equivalent positive angle by adding 360°. The result is the coterminal angle of 150°. That lies between 90° and 180°, so is in the 2nd quadrant.

__

The number given in this problem statement has no units attached. A "unitless" angle measure is a measure in radians. To normalize this angle of -210 radians, we can 68π radians to give a coterminal angle of about 3.628300 radians, or 207.9°. This angle lies between 180° and 270°, so is a 3rd quadrant angle.

__

If the number given here is intended to be -21°, then it is measured 21° clockwise from the +x axis. That puts it in the 4th quadrant.

_____

Additional comment

We understand that sometimes the degree symbol does not get properly rendered when questions are copied to Brainly. We have seen it disappear (which we initially assumed was the case here), and we have seen it rendered as a zero (considered as an afterthought here). We also want to emphasize the fact that angles cannot be assumed to be in degrees, and that an angle in radians is equivalent to a pure number--one with no units at all. Hopefully we've covered enough bases that you can find the answer you want among those offered.

Answer:

Denise = total cost $3,345.00 per mile cost is 0.3185 or 32 cents per mile

Total Lease cost = $15,516

Step-by-step explanation:

Answer:

a + c = 30

8a + c = 100

a=10, c= 20

Step-by-step explanation:

cost = 8a + 1c  since it is 8 dollars for adult and 1 for child where a is the number of adults and c is the number of children

a+c = 30  since we know that 30 adults and children went

100 = 8a + 1c   and it cost 100 dollars

Let c =30 -a

100 = 8a + (30-a)

100 = 7a +30

Subtract 30 from each side

70 = 7a

Divide by 7

10 =a

Then a+c = 30

10+c = 30

c = 30-10

c = 20

Answer:

eqn1 : a +c=30

eqn2: 8a+c=100

20 children and 10 adults

Answer:

b

Step-by-step explanation:

around 500 people travel more than just 30 miles to work, sum even travel across the states

Answer:

The probability that both me and my best friend get the 100 classroom credits is 0.06%.

Step-by-step explanation:

Since Mr. Q's class is having a give-away where his students can receive 100 classroom credits, and he will pull names out of a hat and select two winners, and once a student wins, they are not eligible to win a second time, if there are 40 total people in the class, including me and my best friend, to determine what is the probability that both me and my best friend get the 100 classroom credits, the following calculation must be performed:

I = 1/40 = 0.025

my best friend = 1/39 = 0.02564

0.02564 x 0.025 = X

0.0006410 = X

X x 100 = 0.064

Therefore, the probability that both me and my best friend get the 100 classroom credits is 0.06%.

Answer:

B but there might be more, look below. I didn't have time to calculate the other answers.

Step-by-step explanation:

Well, it is growing x3 each hour, so each half hour it's 1.5...

So whichever is equal to 1.5 is the answer, like B. There might be more.

Answer:

Step-by-step explanation:

x^2+y^2

=2^2+3^2

=4+9

=13

if the question is x*2 + y*2

=2*2 + 3*2

=4 + 6

=10

Answer:

answer might be 10

Step-by-step explanation:

(2)2+(3)2

2×2+3×2

4+6

10

hope it helps

Answer:

B and F

Step-by-step explanation:

Given

Functions A and B

Required

Select the true statements

First, determine the equation of A

We have:

[tex](x_1, y_1) = (1,2)[/tex]

[tex](x_2, y_2) = (3,10)[/tex]

Calculate slope (m)

[tex]m = \frac{y_2 -y_1}{x_2 - x_1}[/tex]

[tex]m = \frac{10 - 2}{3 - 1}[/tex]

[tex]m = \frac{8}{2}[/tex]

[tex]m =4[/tex]

So, the equation is:

[tex]y = m(x - x_1) + y_1[/tex]

[tex]y = 4(x - 1) + 2[/tex]

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

[tex]y = 4x -2[/tex]

So, we have:

[tex]y = 4x -2[/tex] ------ A

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

The y intercept is when [tex]x = 0[/tex]

So, we have:

[tex]y = 4 * 0 - 2 = -2[/tex] ---- y intercept of A

[tex]y = 3 * 0 + 4 = 4[/tex] ---- y intercept of B

By comparison:

[tex]-2 < 4[/tex]

Hence: (b) is correct

The rate of change of a function [tex]y = mx + b[/tex] is m

So:

The rate of change of A is:

[tex]m_A=4[/tex]

and for B is:

[tex]m_B=3[/tex]

By comparison:

[tex]4 > 3[/tex]

Hence: (F) is correct

Answer:

decay

Step-by-step explanation: