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balu736 [363]
3 years ago
7

PLSSS HELP ME WITH THIS QUESTION!!!!!

Mathematics
1 answer:
Pani-rosa [81]3 years ago
8 0
B hope this helps!!!!!!
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A savings account is started with an initial deposit of $700. The account earns 1.5% interest compounded
marusya05 [52]

Answer:

  (a)  A = 700×1.015^t

  (b)  36.2 years

Step-by-step explanation:

(a) Each year, the account value is multiplied by (1 + 1.5%) = 1.015. Repeated multiplication is signified using an exponent. In t years, when the account has been multiplied by 1.015 t times, the account value will be ...

  A = $700×1.015^t

__

(b) You want to find t when A=$1200. Logarithms are involved.

  1200 = 700×1.015^t . . . . use 1200 for A

  1200/700 = 1.015^t . . . . . divide by 700

  log(12/7) = t×log(1.015) . . . . . take logarithms

  log(12/7)/log(1.015) = t ≈ 36.2 . . . . divide by the coefficient of t

It will take about 36.2 years for the account balance to reach $1200.

4 0
4 years ago
travis is 21 years older than his sister michelle . in 9 years he will be twice as old as michelle how old is each of them now
Nuetrik [128]
6 because in 9 years Travis will be 30 and divide that by 2 is 15. 15-9=6
8 0
3 years ago
Read 2 more answers
3x - y = 4<br> x + 2y = 6
kompoz [17]
To solve this you can multiply the second equation by to get

3x+6y =18

Then you can subtract it by the first equation to get

7y= 14
And get y= 2
Then you plug in y to one of the equations to find that x=2
7 0
3 years ago
Read 2 more answers
How does division affect numbers? Give an example and explain the your example and answer
Alja [10]
Division affects numbers by splitting them up into neat little groups.

For example, we can say we have 68 marbles and want to split them into 4 piles. For this, we can make the division problem 68 / 4 = ?

In this example, we are saying that we are splitting 68 marbles into 4 even groups. If we are doing it evenly, how many marbles are in each pile?

68 / 4 = 17

There are 17 marbles in each of the 4 piles. We can check our work by adding:

17 + 17 + 17 + 17 = 68

And the math checks out.
Hope this helped =)
4 0
4 years ago
What is the solution to the equation 13 3/4 + x equals 7 1 / 4​
Olegator [25]

Answer:

x=-6.5

Step-by-step explanation:

7\frac{1}{4} - 13\frac{3}{4}=-6\frac{1}{2}=-6.5

5 0
4 years ago
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