Answer:
2x - 7y = -34.
Step-by-step explanation:
As the line we want is perpendicular to y= -7/2 x + 9 it's slope will be
-1 /(-7/2) = 2/7.
Now we find the point of intersection ofn the 2 given lines:
x + y = 10
3x - 4y = -12
Multiply the first equation by -3:
-3x - 3y = -30
Now add this last equation to the second one:
-7y = -42
y = 6
Plug y = 6 into the first equation:
x + 6 = 10
x = 4.
So the point of intersection is (4, 6) and the equation we want passes through this, so using the point-slope form of straight line we have:
y - 6 = 2/7(x - 4)
7y - 42 = 2(x - 4)
7y - 42 = 2x - 8
2x - 7y = -42 + 8
2x - 7y = -34
Answer: look at the photo
Step-by-step explanation:
Answer:
The loss on the sale of 50 type M cars is $8000, and the loss is decreasing at the rate of $500 per 50 type M car sold.
Step-by-step explanation:
Given
Required
Interpret
From the question, we understand that:
Number of cars
Profit on x cars
Using the above as a point of reference,
Rate of loss per x cars
So, the interpretations are:
A loss of 8000 on 50 cars
The loss rate is a reduction of 500 per 50 car
0.78 per pound is unit rate
Since 5lbs is $3.90, 0.78 is the cost of one pound.
3.90 divided by 5 is 0.78
<span>So lets solve #30. </span>Start by solving the mini equations in the brackets and parenthesis. Work left to right. So start by subtracting four from three. you get -1. Do the next parenthesis, four add nine is 13. Now your equation looks like this: 7-2(-1)+5(13)=?. Next do multiplication and division from left to right. So you'd want to multiply -2 to -1. You get two. Next multiply 5 to 13 to get 65. Now your equation looks like this: 7+2+65= 74. Your answer is 74.
