Answer:
-46
Step-by-step explanation:
4 - 2(a^2 – b^2)^2 =
= 4 - 2(3^2 – 2^2)^2
= 4 - 2(9 - 4)^2
= 4 - 2(5)^2
= 4 - 2(25)
= 4 - 50
= -46
Answer:
copied from InesWalston expert
Money in the bank account after 3 years will be $329.18
Step-by-step explanation:
Jackie deposited $315 into a bank account that earned 1.5% simple interest each year for 3 year, while no money was deposited into or withdrawn from the account.
We know that,
i = p.r.t / 100
Where,
i = interest
P = Principal = $315
r = Rate of interest = 1.5% annual
t = time period = 3 years
Putting the values,
i = 315 × 1.5 × 3 / 100 = $14.18
Total money in bank account = Principal + interest = 315 + 14.18 = $329.18
The answer is 361.
This is because you take 731 and subtract 9 and you get 722. Then you divide 722 by two and you get 361.
Hope this helped!!
There are 21 red pens. For every 3 red pens, there is 1 blue pen.
Let's make these into a fraction equation.
21/p=3/1
p is the number of blue pens we have yet to find.
First, cross multiply.
21x1=21
px3=3p
Now, we have an equation of
21÷3p
We set it equal to 1, and we solve it.
21÷3p = 1
(21÷3p)×3p=1×3p
21=3p
21÷3=(3p)÷3
7=p
So, if there are 21 red pens, there are 7 blue pens.
We add these together to find the total number of pens the teacher has.
21+7=28
The teacher has 28 pens total.
