Answer:
Step-by-step explanation:
Area of equilateral triangle = (
/4) * 
1.732050 * 7 = 12.123
At the bank, Derek made 7 withdrawals, each in the same amount. His brother, John, made 5 withdrawls, each in the same amount.
Let x be the amount of one of Derek's withdrawals
Each of John's withdrawals was $5 more than each withdrawal that Derek made.
x + 5 is t the amount of one of John's withdrawals
Derek made 7 withdrawals
So amount withdraw 7 times = 7x
John made 5 withdrawals
So amount withdraw 5 times = 5(x+5)
Both Derek and John withdrew the same amount of money in the end
(A)7x = 5(x+5)
(B) Solve for x
7x = 5x + 25
Subtract 5x from both sides
2x = 25
Divide by 2
x = 12.5
(C) check your solution
we plug in 12.5 for x in 7x= 5x + 25
7(12.5) = 5(12.5) + 25
87.5 = 62.5+ 25
87.5 = 87.5
(D) Each brother withdrawal 87.5 dollars
Answer:
9/10
Step-by-step explanation:
Answer:
Step-by-step explanation:
y = x - 10. the slope here is 1. A parallel line will have the same slope.
y = mx + b
slope(m) = 1
(-1,-3).....x = -1 and y = -3
now sub and find b, the y intercept
-3 = 1(-1) + b
-3 = -1 + b
-3 + 1 = b
-2 = b
so ur equation is : y = x - 2 <=== equation for line t
Answer:
500
Step-by-step explanation:
510=x+.21x-.19x
510=(1+.21-.19)X
510=1.02X
X=510/1.02
X=500
