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2 years ago

What is the equation of the line passing through the points (-4,-7) and (8,-13)

Mathematics

2 answers:

Valentin [98]2 years ago

6 0

Answer:

6/-12 = -1/2

Step-by-step explanation:

do you want an explanation?

btw, plz brainliest :)

hodyreva [135]2 years ago

3 0

Answer:

y=5/3x-79/7

Step-by-step explanation:

(-4, -7)

x1 y1

(8,-13)

x2 y2

y2-y1/x2-x1=

13+7/8+4= 20/12= 10/6= 5/3

y=5/3x+b

-7=5/3(-4)+b

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Can someone pls help? Thx

sergey [27]

Your answer would be -3/4n+3/8 because 1/4•-3/1n would be -3/4n and then 1/4•3/2 would be 3/8 so your answer would then be -3/4n+3/8.

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2 years ago

What are two decimals with thousandths that would give 0.2 when rounded to the nearest tenth and 0.20 when rounded to the neares

ale4655 [162]

To answer your questions, 3.216 and 7.203.

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2 years ago

a tour bus cost $75 plus $6 for each passenger. write and evaluate an expression to find the total cost for 25 passengers. then.

miskamm [114]

To make an expression for any amount of passengers, you need to use x for each passenger. Fill in x with the amount of passengers. Your equation is:
75 + 6x. Now using this expression, we can find the answer to all of the amounts of passengers.

75 + 6(25) = 225; 75 + 6(26) = 231; and so on. Hope that I helped! Good luck!

8 0

2 years ago

Help please will award brainliest

laiz [17]

Answer:

Step-by-step explanation:

For the function $y=-5x$ , all coordinates this line passes through should make this inequality true.

$\begin{case}y=5(-7)=35\\y=-2(-5)=10\\y=2(-5)=-10\end{case}$

This corresponds with table B.

7 0

2 years ago

How do i calculate? All the way to s_75. It’s so long

mina [271]

Answer:

-675

Step-by-step explanation:

The sum can be broken into parts that you know. Here, one of those parts is the sum of numbers 1 to n. That sum is given by n(n+1)/2.

$\displaystyle S_{75}=\sum\limits_{n=1}^{75}{(67-2n)}=\sum\limits_{n=1}^{75}{67}-2\sum\limits_{n=1}^{75}{n}\\\\=75\cdot 67-2\dfrac{75(75+1)}{2}=75(67-76)\\\\=\bf{-675}$

Another way to do this is to realize the sequence of numbers is an arithmetic sequence with a first term of 65 and a last term of 67-2·75 = -83.

The sum of an arithmetic sequence is found by multiplying the number of terms by their average value. Their average value is the average of the first and last terms.

The average value of those 75 terms is (65 +(-83))/2 = -9, so their sum is ...

75(-9) = -675

7 0

2 years ago