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Elena L [17]
3 years ago
5

$400 invested at 2% compounded quarterly after a period of 2 years

Mathematics
1 answer:
Anna71 [15]3 years ago
7 0
Final balance = $416.28
total compound interest= $16.28
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1/2r -3= 3 (4-3/2r) solve for r
s2008m [1.1K]

1/2r -3= 3 (4-3/2r) is to be solved for r.


I'll begin by making the assumptions that by 1/2r you actually meant (1/2)r and that by 3/2r you actually meant (3/2)r. When in doubt, please use parentheses to make your meaning clear.


Thus, 1/2r -3= 3 (4-3/2r) becomes (1/2)r -3= 3 (4-(3/2)r ) .

Simplify this by multiplying all 3 terms by 2. Doing this will eliminate the fractions:


r -6 = 3 (4*2-(3)r ) or r - 6 = 24 - 9r


Now expand the right side, using the distributive property of

r - 3 = 24 - 9r


Regrouping so as to combine like terms:


10r = 30


Solving for r: r = 30/10 = 3


The value of r that satisfies this equation is 3

8 0
3 years ago
Write in descending order.420t + 201 to the 3rd power -210t to the 2nd power
nexus9112 [7]

To answer this, we need to see the polynomial. Descending order is in a way that the first term of the polynomial will be three, the second (in descending order, two....and so on).

420t+20t3-210t2

In descending order is:

20t^3 - 210t^2 + 420t

So, the option is number two.

4 0
1 year ago
Carrie finishes her supper at 8:45 P.M. Then she spends 45 minutes doing her homework and 15 minutes getting dressed for bed.
Fed [463]

Answer:

The answer is 9:45

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Tickets to a school play cost $3 for students and $8 for adults. On opening night, $1000 was collected and 150 tickets sold. How
vesna_86 [32]
Let the number of students who bought tickets be s,
Let the number of adults who bought tickets be a,

Equation 1:

3s \: + \: 8a \: = \: 1000

Equation 2:

s \: + \: a \: = \: 150 \\ s \: = \: 150 \: - \: a

Substitute ( 2 ) into ( 1 ),

3(150 \: - \: a) \: + \: 8a \: = \: 1000 \\ 450 \: - \: 3a \: + \: 8a \: = \: 1000 \\ 5a \: = \: 550 \\ a \: = \: 110

Substitute a = 110 into ( 2 ),

s \: + \: 110 \: = \: 150 \\ s \: = \: 40

Ans: 40 Student Tickets, 110 Adult Tickets
7 0
3 years ago
Answer this right for a cookie
elena55 [62]
Ouuuuuuuuuu I want a cookie
6 0
3 years ago
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