i dont know if i can explain it right, but its kinda just like matching numbers to an equation with other numbers
google videos can explain it better and show
hope this help :)
Answer:
c
Step-by-step explanation:
because 4.2+7.6= 11.8, so it is higher than the third side
9514 1404 393
Answer:
y = -2(x -4)
Step-by-step explanation:
The equation of the line is conveniently written in point-slope form, since we are given a point and a slope. That form is ...
y -k = m(x -h) . . . . . . line with slope m through point (h, k)
Using the given point and slope, the equation for the line is ...
y = -2(x -4)
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This simplifies to the slope-intercept form ...
y = -2x +8
Answer:
Step-by-step explanation:
To find the value of x you must first set up an equation to solve for x. We are told that Hannah has written 142 more lines than Sam so we can make an equation by subtracting Sam's total from Hannah's total.
(7x + 78) - (6x + 73) = 142
Hannah - Sam = Difference
We then begin to solve. First we must distribute the subtraction to all parts of Sam's equation, creating a new equation of:
7x + 78 - 6x - 73 = 142
Then put like terms together
7x - 6x + 78 - 73 = 142
Condense the like terms
7x - 6x = x
78-73 = 5
x + 5 = 142
Then isolate the x by subtracting the 5.
x + 5 (-5)= 142 (-5)
x = 137
Then plug it back into the equation to check and see if your x is correct
(7x + 78) - (6x + 73) = 142
(7(137) + 78) - (6(137) + 73) = 142
(959 + 78) - (822 + 73) = 142
(1037) - (895) = 142
1037 - 895 = 142
Y = 7.5, the way I was taught to find this is to put 4 over 10 and 3 over x so it would look like this: 4/10=3/x Then you cross multiply. First multiply 10 and 3 and put 4 and x together like this: 30=4x Then to figure out x you divide 4 from both to get 7.5
Sorry if the explanation was confusing
