Answer:
A. $2,000
Step-by-step explanation:
<em>Assuming that the money in the savings account will be used to pay off for tractor.</em>
<em>let the number of months be m</em>
Savings after m months will be 500+ 150m
After m months the installments paid will 200m
To find the months it will take to pay for the tractor in m months, savings and the installments will be the price of the tractor. As an equation it be represented as below:
500+150m +200m = 4000
150m + 200m = 4000-500 <em>(grouping like terms)</em>
350m = 3500 <em>(Making m the subject of the formula)</em>
350m/350 = 3500/350
m = 10
Substituting m into the equation of saving after m months
<em>Savings after m months will be</em> 500+ 150m
<em>Savings after m months will be</em> 500 + 150(10)
<em>Savings after m months will be</em> 500 + 1500
Savings after m months will be $2000
Answer: C
Steps: 4x + y = -4, x + y = 2
Isolate the x for (x + y = 2): x = 2 - y
Plug the value of x into the other equation: 4(2 - y) + y = -4
Simplify: -4y + 8 + y = -4
Combine like variables (letters): -4y + y = -3y
So -3y + 8 = -4
Subtract eight from both sides: -3y + 8 - 8 = -4 - 8
-3y = -12
Divide both sides by negative three: -3y ÷ -3 = -12 ÷ -3
Simplify: y = 4
Plug the value of y into one of the original equations (I'll use x + y = 2):
So x + 4 = 2
Isolate the x variable: x = -2
Answer 36
Do the parentheses first (3^2)=9
(9)4•1
The 1 is because 3^0 is just 1
9•4 is 36 and 36•1 is 36.
Answer:
23.5
Step-by-step explanation:
Answer:
The total surface area is 140.4
Step-by-step explanation:
If we start with the larger surfaces on the top and bottom, we can find both of their surfaces by multiplying 4 by 6.5.
4*6.5=26. Since there are 2 of these surfaces, we can multiply 26 by 2 to get 52.
Then, we can find the surface area of the sides by multiplying 6.5 by 3.4.
6.5*3.4=22.1 Since there are four of these surfaces, we can multiply 22.1 by 4 to get 88.4.
Now, all we have to do is add them together.
52+88.4=140.4
The total surface area is 140.4
Hope this helps! :D
