a car is stopped at a red light when the light turns green the car accelerates at 20 ft/sec/sec how long does it take for the car to go 1000 ft
Answers
Step-by-step explanation:
d = do + vo t + 1/2 at^2
when the car starts at zero velocity, this becomes
d = 1/2 a t^2
1000 = 1/2 (20) t^2
t^2 = 1000/ ( 1/2 * 20) shows t = 10 s
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Follow the directions to solve the system of equations by elimination.8x + 7y = 39 4x – 14y = –68
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What is the value of the expression 9×4−(2×12)? Enter your answer in the box.
y = x + 10
y = 14 - x
y = x - 10
Answers
For the equation y = x - 10 the ordered pair (2,12) is not a solution. The correct option is D.
What is an expression?
The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the ordered pair is (2, 12). The equations will be checked as,
For y = 6x
12 = 6 x 2
12 = 12
For y = x+ 10
12 = 2 + 10
12 = 12
For y = 14 - x,
12 = 14 - 2
12 = 12
For y = x - 10,
12 = 2 - 10 = -8
Hence, the equation y = x -10 is not a solution.
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Answer:
y = x -10
Step-by-step explanation:
Answers
The equation of the line x + 2y = 6 in slope-intercept form is y = - (1/2)x + 6.
What is slope?
The slope is the rate of change of the y-axis with respect to the x-axis.
The equation of a line in slope-intercept form is y = mx + b, where
slope = m and y-intercept = b.
We know the greater the absolute value of a slope is the more steeper is its graph or the rate of change is large.
The equation of the given line is x + 2y = 6.
We know equation of a line in slope intercept form is,
y = mx + b.
Therefore,
x + 2y = 6.
2y = - x + 6.
y = - (1/2)x + 6.
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Answer:
y= -1/2x+3
Step-by-step explanation:
Answers
Area = √p(p −a )(p −b )(p −c )
where p is half of perimeter of the triangle and a,b,c are the side lengths.
p = (25 + 25 + 48) / 2
p = 49
Area = √49(49−25)(49−25)(49−48)
Area = 168
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|5 - 2(-4)| · |-4|
|5 + 8| · 4
|13| · 4
13 · 4
52