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1 year ago

Write the equation of the line containing the points (3, 6) and (7, - 2) in standard form.

Mathematics

2 answers:

Rama09 [41]1 year ago

7 0

Answer:

$y = mx + c \\ 6 = 3m + c...(1) \\ - 2 = 7m + c...(2) \\ subtract \: (2) - (1) \\ 4m = - 8 \\ \therefore \: m = - 2 \: sub \: in \: (1) \\ 6 = 3( - 2) + c \\ \therefore \: c = 12 \\ \boxed{y = - 2x + 12}$

kondaur [170]1 year ago

4 0

Answer:

y=-2x+12

Step-by-step explanation:

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jok3333 [9.3K]

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2 years ago

How do you solve 6) n2+7n+15=5 by factoring?

charle [14.2K]

First, you need to set the equation equal to zero:

n^2 + 7n + 10 = 0

Now we factor. We need to find two numbers that add up to 7 and multiply to 10.

2 + 5 = 7
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Now, we just need to write this as a polynomial:

(n + 2) (n + 5)
is our answer.

Hope this helps!

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2 years ago

A music store is having a sale where you can buy 2 new-release CDs for $15. How much will 7 CDs cost? Use at least 2 ways to sho

Pavlova-9 [17]

Answer: $52.50

Step-by-step explanation:

1 way : 15 divided by 2 then multipy your answer by 7

2nd way : 15x7. Once you get that answer divide it by 2 to get $52.50

7 0

2 years ago

Read 2 more answers

if something starts out at costing $500, and then is marked down by 25% on each of three occasions, what is the final price?

Afina-wow [57]

$125 because when you do $500x0.75 it equals $375. $500-375=$125

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2 years ago

Read 2 more answers

last year 1/5 of the students in your class played a sport this year 10 students join the class five of the new students play a

tino4ka555 [31]

Answer:

Step-by-step explanation:

last year 1/5 of the class played sports, so s = (1/5) c

the next year, s increased by 5, c increased by 10 and the fraction changed to 1/4, so for the next year (s+5) = (1/4)(c+10)

To solve this we can substitute s = (1/5)c from the first equation into the second, so

((1/5)c + 5)=(1/4)(c+10), simplify both sides

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4c + 100 = 5c + 50, subtract 4c, subtract 50 from both sides

50 = c, number of students in class last year was 50, this year is 10 more, so this year is 60

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2 years ago