Mark stated that the slope of the line that passes through these two points (1, -19) and (-2, -7) is -¼. Is Mark correct? Explain. (show your work).

Answers

Answer 1

9514 1404 393

Answer:

  no

Step-by-step explanation:

The slope formula is ...

  m = (y2 -y1)/(x2 -x1)

We can use the values ...

  (x1, y1) = (1, -19)

  (x2, y2) = (-2, -7)

Putting these into the formula gives ...

  m = (-7 -(-19))/(-2 -1) = 12/-3 = -4

The slope is -4, not -1/4. Mark is incorrect.


Related Questions

You start driving north for 8 miles, turn right, and drive east for another 6 miles. At the end of driving, what is your straight line distance from your starting point?

Answers

Answer:

I think you are asking the total distance isn't? The straight line distance from your starting point 14 miles.I've added both miles to get the total distance

Step-by-step explanation:

please if I'm wrong or my answer doesn't match the with the answer's book tell me right away I try another method.

9 A right rectangular prism

What is the volume, in cubic meters, of the prism?

Answers

Answer:

D. 203

Step-by-step explanation:

volume= width X height X length

volume= 8 X 7 1/4 X 3 1/2

volume= 203

A bacterium triples in size every 6 minutes. If you start with 3 bacterium
in a dish, which of the following calculates the total amount of bacteria
after t hours?

3^t+1

3(2)^10t

3•3^t/6

3(2)^10t+1

None of the above

Answers

9514 1404 393

Answer:

  E  none of the above

Step-by-step explanation:

"Triples in size" means the growth factor is 3, so we expect to see that as the base of the exponent. That growth factor applies to a period of 6 minutes, or 1/10 hours. The number of 6-minute intervals in t hours is 10t, so we expect to see that as the exponent. The appropriate model could be written ...

  n(t) = 3·3^(10t) . . . . . matches no offered answer choice

convert 6% to an equivalent decimal​

Answers

Answer:

0.06

Step-by-step explanation:

Challenge #1 Press "Deal" to receive your cards. Drag cards from your hand to the red and blue area GOAL: Create two groups of cards with the SAME SUM using as many cards as possible. Submit 8,7,6,3,2,1​

Answers

Answer:

ok

Step-by-step explanation:

:)

What percentage of 400=104 pls help me

Answers

Answer:

26%

Step-by-step explanation:

To find the percentage of a number, I find it's often helpful to first write it as a fraction:  [tex]\frac{104}{400}[/tex] .

Percentages can be represented as a fraction by putting them over 100, eg. 25% is [tex]\frac{25}{100}[/tex]

.

Therefore, to get [tex]\frac{104}{400}[/tex] into a percentage, we need to change that 400 on the bottom to 100. How do we do that? Divide by four. However, anything we do to the bottom of a fraction, we must do to the top, so we divide both by four:

[tex]\frac{\frac{104}{4} }{\frac{400}{4} }[/tex] = [tex]\frac{26}{100}[/tex]

As we saw earlier, if a fraction has 100 at the bottom, then the top of the fraction is the percentage. So 104 is 26% of 400.

BRAINLIEST FOR ALL 3 CORRECT ANSWERS, IM FAILING SCHOOL AND NEED HELP ASAP. EVEN OFFICIAL HELP COUNTS

Answers

Answer:

1. quarter turn 2. B 3. (b,-a)

Step-by-step explanation:

HELP ME PLEASE TO THIS QUESTION

Answers

Answer:

510 miles, 204/3 = 68

68x7.5= 510

There u go :)

The function, f(x), is plotted below.



Evaluate the limits, if they exist. If not, write DNE.

Limit as x approaches negative 1 minusf(x) =

Limit as x approaches 3 plusf(x) =

Limit as x approaches 1 f(x) =

Answers

Answer:1 2 DNE

Step-by-step explanation:

Answer:

1

2

DNE

Step-by-step explanation:

REALLY NEED HELP WITH THIS!!!​

Answers

Answer:

9

Step-by-step explanation:

Solve the equation

Area =1/2(heightxbase)

27=1/2(Xx6)

54=6x

9 =x

Sid has £5 to buy apples and bananas.
He uses his money like this:
He buys 18 apples.
Then he buys as many bananas as possible.
With his change, he buys more apples.

How many apples and bananas does he buy?

(Apples=6p Each)
(Bananas= 40p Each)

(pls add working out)

Answers

He buys 18 apples = £1.08
He can buy 9 bananas

Answer:

Apples: 23 , bananas = 9

Step-by-step explanation:

Apples = 18 x 6 = 108p = 1,08£

5-1,08 = 3,92£

£3,92 = 392p

Bananas = 392 : 40 = 9,8= 9

40x9 = 360p = 3,60£

change = 3,92 -3,60 = 32p

apples = 32 : 6 = 5,33 = 5

total apples = 23

If anyone knows the answer, could you help LOL


What is the equation of the line that passes through the point (4, -7) and has a slope of -1/2 ?

Answers

Answer:

y = -1/2x - 5

Step-by-step explanation:

To solve this (and questions like it), use the formula for the equation of a line:

y=mx+c, where y and x are any given co-ordinates, m is the slope, and c is the y-intercept.

Since we know that the slope is -1/2, we can plug this into our equation to replace m:

y=mx+c

y=-1/2x+c

To find c, we plug in our co-ordinate (4,-7), so that c is the only unknown, and we can solve for it:

y=-1/2x+c

-7=-1/2(4)+c

-7=-2+c

c=-5

Now that we know c, we can finish off our equation:

y = -1/2x + c

y = -1/2x - 5

2. Find the GCF of: - 4x^2 and 28x^3

Answers

Answer: 4x^2

Step-by-step explanation: Multiply that by -1 to get -4x^2 and multiply by 7x to get 28x^3

Which graph or table shows a proportional relationship? Select all that apply.

Answers

Answer:

The number of days and total miles run one.

Step-by-step explanation:

A proportional relationship is y/x being the same everytime. The first table doesnt fit with that. The second graph isnt a straight line. The third table isnt coreect either. Lastly the forth table workng.

Sorry if im incorrect

Which of the following is a sequence?
A 3, 6, 9, 18, ...
B 3, 6, 12, 18, ..
C 0.3, 0.7, 1.3, 1.5, ...
D 0.3, 0.6, 1.2, 2.4,​

Answers

Answer:

The answer of this question is D

Step-by-step explanation:

Time 2

Solve for x. Assume that lines which appear tangent are tangent.

Answers

Presumably, x is standing in for the question mark.

The pair of vertical angles (DFE and CFV) shown here both have measure 125°. This angle measure is equal to the average of the measures of the arcs intercepted by the chords CE and DV.

So we have

angle DFE = 1/2 (arc CV + arc DE)

125° = 1/2 (x + 200°)

250° = x + 200°

x = 50°

finding missing angles in triangles worksheet answers house

Answers

Step-by-step explanation:

What exactly are you looking for?

The average daily temperatures in degrees Fahrenheit for one week in July were 94, 92, 90, 95, 71, 89, and 92. Name any outliers in the data.

Answers

Answer:

Interquartile range: 5

Outlier: 71

Potential outlier: none

Step-by-step explanation:

Help me please! Its really complicated

Answers

1. 4.5 cm

2. 25.13 inches

3. 78.54 cm

4. 13 cm. 6.5 +6.5

Radius is half the diameter

Step-by-step explanation:

1) Radius = Half of Diameter

[tex]r = \frac{1}{2} d \\ r = \frac{1}{2} \times 9 \\ = 4.5cm[/tex]

2) Given r = 4 in.

Circumference of Circle =

[tex]2\pi \: r \\ = 2\pi(4) \\ = 8\pi \: cm[/tex]

3) Given r = 5 in.

Area of Circle =

[tex]\pi {r}^{2} \\ = \pi {5}^{2} \\ = 25\pi {cm}^{2} [/tex]

4)Diameter = 2x Radius

[tex]d = 2r \\ = 2 \times 6.5 \\ = 13cm[/tex]

Note for questions 2 and 3 I will leave answers in terms of pi as the question did not specify to leave the answer as what. You can use your calculator to evaluate them if needed.

sec (x) = -2.3. If x and y are complementary, what is csc (y)?

Answers

Answer:

eat my cog

Step-by-step

What is the diameter of a circle with a circumference of 132 ft? Use 227 for π . Round your answer to the nearest whole number.

Answers

Answer:

The answer is 132 feet

Step-by-step explanation:

That's the diameter.

C = pi * d

C = 3.14 * 42

C = 131.88

Thar rounds to 132 feet.

A bag contains 7 blue, 4 yellow, and 9 purple marbles.
What is the probability of P(not blue) written as a fraction?

Answers

Answer:

13/20

Step-by-step explanation:

you count up all the marbles together, which is 20 and then count up all the other marbles besides blue, which would be 13 of the 20 marbles are not blue

Factor the expression -8x 2+ 22x - 15

Answers

3(2x-5) is the answer

. A carbon filter is used by a scientist to filter out small particles of soil and rocks
from a water sample taken from a stream. The exponential function f(x) =
500(0.35) * can be used to model the function. Which of the following could be
represented by the value 500 in the function rule?

Answers

Answer:

C- The size of the initial water sample, in gallons.

Step-by-step explanation:

The answer to the question

Answers

Answer:

I am pretty sure this is gonna be the 3rd anwser

Answer:

The answer is C aka 3(5)^6

Step-by-step explanation:

BRAINLIEST FOR CORRECT ANSWER, IM FAILING SCHOOL AND NEED HELP ASAP. EVEN OFFICIAL HELP COUNTS

Answers

6 and 8 are vertical angles

Plss answer this will give brainliest 5 stars and a thx
IVE BEEN ASKING FOR 2 DAYS :( OVERDUE

Answers

Answer: -10

Step-by-step explanation:

A negative number divided by a positive number is always going to be negative

Answer:

-10

Step-by-step explanation:

Because a negative number divided by a positive number is a negative number.

PLEASE HELP !!!! ILL GIVE BRAINLIEST !!!

Answers

Answer:

1) congruent

2) corresponding angles

3) 3x+21 = 6x-60

4) x =9

Step-by-step explanation:

1) congruent becuase supplementary means that these 2 angles add up to make 180 degrees.

2) the file below

3) we know they are equal because the congruent correspoding angles.

4) 3x+21 = 6x-60

=> 21 = 9x-60

=> 81 = 9x

=> 9 = x

Evaluate -2x^3-3x^2+4 for x=-2

Answers

Answer: 8

Step-by-step explanation:

1. Rewrite the equation:

-2x^3 - 3x^2 + 4     x = -2

2. Plug in the value of x, -2

-2(-2)^3 - 3(-2)^2 + 4

3. Use order of operations (PEMDAS):

-2(-8) - 3(4) + 4

= 16 - 12 + 4

= 8

Simplify the expression $(x-4)(x-7) + (3-x)(2+x).$
Help please!

Answers

The equation -10x + 34 is the simplification for the given expression.

Addition Sign Rules

Here it is important to remember the rules for the  addition of integers numbers:

+  +   Add  Final result (+)  

-   -   Add  Final result (-)  

+  -   Subtract  Final result (the sign of the integer having a greater value )

-   +  Subtract  Final result (the sign of the integer having a greater value )

Multiplication Sign Rules

The rules for multiplication of numbers are:

+  +  or  -   -

     The result presents a positive sign (+) because the signs are same.

+  - or   -   +

    The result presents a negative sign (-) because the signs are different.

First, you should apply the distributive property and the multiplication sign rules.

(x-4)(x-7) + (3-x)(2+x)

x²-7x-4x+28+6+3x-2x-x²

After that, you should simplify the previous result from addition or subtraction sign rules.

x²-11x+34+x-x²

-10x + 34

Read more about the distributive property here:

https://brainly.com/question/2807928

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