A = d/t
120 miles - distance, 3 hours - time
A = 120/3
A = 40
Answer:
Step-by-step explanation:
The slope-intercept form of an equation of aline:
<em>m</em><em> - slope</em>
<em>b</em><em> - y-intercept</em>
The formula of a slope:
From the graph we have the points:
(-2, -5)
y-intercept (0, 3) → <em>b = 3</em>
Calculate the slope:
Put the value of the slope and the y-intercept to the equation of a line:
Area of a triangle = 1/2 * b * h
b = base
h = height
We know:
h = x
b = 4x
Area = 338ft^2
Let's plug these numbers into the Area formula above.
338ft^2 = 1/2 * 4x * x
First, let's divide both sides by 1/2
676ft^2 = 4x * x
Let's simplify the right side.
676ft^2 = 4x^2
Take the sqrt of both sides.
26 = 2x
Divide each side by 2
13 = x
Remember, the height = x = 13 feet
Answer:
true
Step-by-step explanation:
5x+7y=41
3x-2y=6
Multiply each equation by coefficient to y
2(5x+7y)=2(41 )
7(3x-2y)=7(6 )
Add both equations
10x+14y=82
+ 21x-14y=42
____________
3x = 124
Divide both sides by 3 to find x
3x/3=124/3
X= 4
Now select an equation substitute x to solve for y .
10x+14y=82
10(4)+14y=82
40+14y= 82
Subtract 40 both sides
40-40+14y=82-40
14y= 42
Divide 14 both sides
14y/14=42/14
Y= 3
Your answer is point form ( 4,3)