Answer:
Given the equation 2y-40=-18 to simplify the equation further we need to first add 40 to both sides of the equation thereby justifying the addition property as shown;
2y-40 + 40 =-18+40
2y = 40-18
2y = 22
We will also apply the division property here. Division property is used when both sides of an equation is divided by a number without affecting the equality rule.
Dividing the resulting equation by 2:
2y/2 = 22/2
y = 11
Step-by-step explanation:
If you mark up 584 by 25%, you get 730. Therefore, the price of the refrigerator after the markup is $730.
Answer:
40 in²
Step-by-step explanation:
Surface area = 4 triangles + square
= 4[½ × 4 × 3] + 4²
= 4(6) + 16
= 40 in²
Answer:
greater = x = 159
smaller = y = 20
Step-by-step explanation:
Let:
Number 1 = x (greater)
Number 2 = y (smaller)
Now according to given conditions:
x = 8y -1 ................. eq 1
x + y = 179 ................ eq 2
By taking eq 1:
x = 8y -1
Subtracting 8y from both sides:
x - 8y = 8y -8y -1
after cancellation of same terms with opposite signs
x - 8y = -1 .................... eq 3
Subtracting eq 3 from eq 2
(x + y) - (x - 8y)= 179 - (-1)
As "-" into "-" gives "+"
x + y - x + 8y = 179 + 1
after cancellation of same terms with opposite signs and adding same terms:
9y = 180
Dividing both sides by 9 we get
y = 180/9
y = 20
Putting value of y in eq 2 we get:
x + y = 179
x + 20 = 179
Subtracting 20 from both sides
x = 179 - 29
x = 159
So the numbers are:
greater = x = 159
smaller = y = 20
I hope it will help you!
4=5x-3
<span>7=5x </span>
<span>7/5=x </span>
<span>1.4=x</span>