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icang [17]
3 years ago
8

Solve by additionmethod3x - 84 = 3​

Mathematics
1 answer:
galina1969 [7]3 years ago
6 0
3x-84=3
+84
3x=87
87/3
x=29
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In a multiple choice examination of 20 questions, four marks are given for each correct answers and one mark is deducted for eac
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Answer:

Total Mark = 5c - a

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Total Mark = 4c - (a - c) = 5c - a

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Read 2 more answers
Jeremy and Brenda drove their cars in
harkovskaia [24]

Answer: Jeremy drove 84 miles.

Step-by-step explanation:

Let x represent the number of miles that Brenda drove.

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4 0
3 years ago
TEXASCHIC! :)
nlexa [21]
(3,51)(5,59)
slope = (59 - 51) / (5 - 3) = 8/2 = 4

y = mx + b
slope(m) = 4
(3,51)...x = 3 and y = 51
sub and find b, the y int
51 = 4(3) + b
51 = 12 + b
51 - 12 = b
39 = b

so ur equation is : y = 4x + 39...but u need it in standard form

y = 4x + 39
-4x + y = 39
4x - y = -39 <==== this is ur equation...x = number of hrs and y = total velocity
====================
ur x axis is the number of hrs
ur y axis is total velocity in km

y = 4x + 39......slope = 4.....y int = (0,39)....x int is (- 9.75,0) or -9 3/4 for graphing purposes)....so start at (-9.75,0)...and since the slope is 4, go up 4 and to the right 1....plot that...then up 4 and to the right 1...plot that...u will cross the y axis at (0,39)....and just connect ur plotted points and u have ur line......or what u can do since it is asking for the first 6 hrs....sub in 1 for x and solve for y....then sub in 2 for x and solve for y...keep doing this up till 6 and u will have ur line up till 6 hrs
8 0
3 years ago
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