Answer:
Step-by-step explanation:
Slope of the trail is expressed as;
Slope = vertical distance/horizontal distance
Given
Vertical distance = 60metres
Horizontal distance= 300metres
Substitute
Slope = 60/300
Slope = 6×10/30×10
Slope = 6/30
Slope = 6×1/6×5
Slope = 1/5
Hence the slope of the trail in reduced fraction is 1/5
Answer: The car will skid 200 miles
Step-by-step explanation:
The formula S= 7/2√2D
can be used to approximate the speed S, in miles per hour, of a car that has left skid marks of length D, in feet. To determine how far a car will skid at 70 mph, we will substitute 70 mph for S in the formula. It becomes
70 = 7/2√2D
We will take squares of both sides. This is to simplify the square root on the right had side of the equation. It becomes
70^2 = 7^2/2^2(√2D)^2
4900 = 49/4 × 2D
4900 = 49D/2
Cross multiplying,
49D = 2 × 4900 = 9800
D = 9800/49 = 200
Answer:
3w² + 10w +8 (C)
Step-by-step explanation:
A rectangle has a length that is 3 times its width, w, in inches. The width is increased by 2 inches, and the length is increased by 4 inches. Which expression represents the area of the larger rectangle?
First, remember that the length of the first rectangle is 3 * w, or 3w.
Now, onto the second rectangle.
The width is increased by 2, so it becomes w + 2
The length is increased by 4, so it becomes 3w +4.
Area is length times width, so the area is
(w + 2)(3w + 4)
Simplify.
3w*w + 4*w + 2*3w + 2*4 =
3w² + 4w + 6w +8
3w² + 10w + 8, or C
If you attatch a picture i can help. or message or even write out the points
X=12
Hope this helps
10x-20+6x+8=180º
