Answer:
300 is the solution
Step-by-step explanation:
use the distributive property
75 * 7 = 525
75 * -3 = -225
put em together
525 - 225 = 300
Answer:
36.6 meters
Step-by-step explanation:
1 yard is .9144 meters so 40 yards is 36.576 meters. (i rounded it)
13/3.25 is equal to 4. That means it's 4 bucks per 1 inch
Answer:
Step-by-step explanation:
A landscaping company placed two orders with a nursery. Sam tried to use system of equation to solve the problem.
Let us represent
Cost of bushes = x
Cost of trees = y
The first order was for 13 bushes and 4 trees, and totaled $327.50.
Hence
13x + 4y = 327.5......Equation 1
The second order was for 6 bushes and 2 trees, and totaled $142.96.
Combined both Equations
13x + 4y = 327.5......Equation 1
6x + 2y = 142.96 ........ Equation 2
We solve using Elimination method
We Multiply Equation 1 by 2 and Equation 2 by 4 to Eliminate y
26x + 8y = 655 ..... Equation 3
24x + 8y = 571.84 ..... Equation 4
We substract Equation 4 from Equation 3
2x = 83.16
x = 83.16/2
x = $41.58
Let 'x' be the problems worth 2 points.
Let 'y' be the problems worth 3 points.
Since, there are 38 total problems.
So, 
(equation 1)
x = 38-y
Since, a perfect score is 100 points.
So, 
(equation 2)
Substituting the value of 'x', we get
y = 24
x+y = 38
x = 38-24 = 14
So, 14 problems are worth 2 points and 24 problems are worth 3 points.
