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ashlynchristianson
12.12.2020 •
Mathematics
Help me plssss
its for a math test and im braindead atm
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Ответ:
5/8
Step-by-step explanation:
3/8 + 1/4
To add these fractions, you need a lowest common denominator. Both 4 and 8 "go into" 8, so the lowest common denominator is 8.
In order to change the denominator 4 to 8, you need to multiply both the numerator and the denominator by 2. So, 1/4 becomes 2/8.
Now, the problem is 3/8 + 2/8.
You can add the numerators, because the denominator is the same for each fraction.
3/8 + 2/8 = 5/8
Ответ:
point slope form
y-y1=m(x-x1)
slope-intercept form
y=mx+b
slope formula
y2-y1/x2-x1
slope of line passing through (3.29,-9.19) & (3.29,4.72)
UNDEFINED
line perpendicular to y=3x-7 & passes through (3,5)
y-5 = -1/3(x-3)
slope of perpendicular lines
negative reciprocals (flip and change signs)
m --> -1/m
covering up method
only used with standard form
-4x + 7y = 56 Find x & y intercepts of equation
x = (-14,0) y = (0,8)
Terry is skiing down a steep hill. Terry's elevation E(t)
in feet after t seconds is given by E(t) = 2000 − 90t.
Write a complete sentence describing Terry's starting elevation and how it is changing over time.
Terry starts at an elevation of 2000 feet and descends at 90 feet per second.
If the graphs of two linear functions are perpendicular, describe the relationship between the slopes and the y-intercepts.
slope: negative reciprocals of one another.
y-intercept: There is no relationship.
Step-by-step explanation: