Answer:
The interest rate is 5%.
Step-by-step explanation
The appropriate formula to use here is as follows:
i = simple interest = p*r*t.
Let's solve this for i: divide both sides of the equation by p*t:
i
------ = r
p*t
Subbing $412.5 for i, $750 for p and 11 yrs for t, we get:
$412.50
-------------- = 0.05.
($750)(11)
The interest rate is 5%.
Answer:
Pies=$0.85
Donuts= $1.20
Step-by-step explanation:
In the equation let p stand for the number of pies and d stand for the number of donuts.
To solve this set up 2 equations, one representing bill and the other representing Mary Ann.
- Bill's equation is 5p+7d=$12.65.
- Mary Ann's equation is 6p+6d=$12.30
Then solve using a system of equations. Systems of equations can be solved using elimination or substitution. I will use substitution. Solve bill's equation for p. This gives you . Then, you can substitute that into Mary Ann's equation. This looks like . Solve for d. Once you solve d=1.20. Finally, substitute 1.20 back into either Bill's or Mary Ann's for d and solve for p. No matter which equation you use p=0.85.
2×3=6
6×1=6
12÷2=6
Sorry if these don't help.
Answer:
Hiro should have divided both sides of the equation by b
Step-by-step explanation:
Given the formula for area of a triangle (A) = ½bh, Hiro was expected to solve for h.
To find out where Hiro made a mistake, let's solve for h step by step as it ought to be solved.
Thus,
A = ½ bh
==>Multiply both sides by 2:
2*A = 2 * [½bh]
2A = bh
==>Divide both sides by b:
(2A)/b = (bh)/b
(2A)/b = h
h = (2A)/b
The mistake Hiro made was that he subtracted b from both sides of the equation instead if dividing both sides by b.
Hiro should have divided both sides of the equation by b
The first space takes 6 square feet
2 takes 4.5
so 6+4.5=10.5
now 12-10.5
your answer is 1.5<span />