You don't really need the I = prt formula to solve this problem.
Try this:
Let x = amount loaned at 8% and ($12,000 - x) = amount loaned at 18%
Write the equation: (change the percents to decimals: 8% = 0.08 and 18% = 0.18)
(0.08)x + (0.18)($12,000 - x) = $1,000
This expresses the total amount of earned interest in terms of the amounts of the loan, x and ($12,000 - x}.
0.08x + $2,160 - 0.18x = $1,000 Simplify and solve for x.
-0.1x = -$1,160 Divide both sides by -0.1
x = $11.600 The amount loaned at 8% interest.
see if this help
14. Perimeter of square is 4(x+5)=4x+20.
Perimeter of triangle is 9x.
So 9x=4x+20, 5x=20, x=4.
Sides of the triangle are 3x=12 each.
15. Multiply through by 3: 3V=Bh, divide through by h: 3V/h=B, so B=3V/h.
It would be: a = v₂-v₁ / t
a = (70-10) / 12
a = 60 / 12
a = 5 m/s²
So, option A is your final answer.
Hope this helps!
Answer:
see below
Step-by-step explanation:
First figure out how much he spent on lunch
1/4 * 20 = 5
Then determine how much he spent on music
1/2*20 = 10
He spend 5+10 = 15
He had 20
20 -15 =5
He had 5 dollars left to save
So he saved 5 dollars