If 2 inches equal 40 miles, 4 inches would equal 80. You don’t have to do anything else because you can eliminate all the other answers. The only one it could be is B. 82.5 miles.
<span>Let x = the width
:
It says,"The length of a rectangle is 4 less than 3 times the width." write that as:
L = 3x - 4
:
If the perimeter is 40, find the dimensions of the rectangle.
:
We know: 2L + 2W = 40
:
Substitute (3x-4) for L and x for W
2(3x-4) + 2x = 40
:
6x - 8 + 2x = 40; Multiplied what's inside the brackets
:
6x + 2x = 40 + 8; do some basic algebra to find x; (added 8 to both sides)
:
8x = 48
:
x = 48/8
:
x = 6 which is the width
:
It said that L = 3x - 4, therefore:
L = 3(6) - 4
L = 18 - 4
L = 14; is the length
:
Check our solutions in the perimeter:
2(14) + 2(6) =
28 + 12 = 40</span>
It is 90 yds squares because formula for a triangle for area is (length times width) divided by 2. So it would be 180 divided be 2 which is 90 :)
Answer: Possibly the first
Step-by-step explanation:
Answer:
\[y=-5x+18\]
Step-by-step explanation:
Given that the line is parallel to \[y = -5x + 6\]
Hence the slope of the line is given by -5
Hence the equation of the required line can be represented by \[y = -5x + c\]
This line passes through (4,-2). Substituting:
\[-2 = -5 * 4 + c\]
=> \[-2 = -20 + c\]
=> c = 20-2 = 18
So the required equation of the line is given by : \[y = -5x + 18\]
From the given options, option 3 is the correct one.
