Answers:
- <u>24000 dollars</u> invested at 4%
- <u>18000 dollars</u> was invested at 7%
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Work Shown:
x = amount invested at 4%
If she invests x dollars at 4%, then the rest (42000-x) must be invested at the other rate of 7%
She earns 0.04x dollars from that first account and 0.07(42000-x) dollars from the second account
This means we have
0.04x+0.07(42000-x)
0.04x+0.07*42000-0.07x
0.04x+2940-0.07x
-0.03x+2940
This represents the total amount of money earned after 1 year.
We're told the amount earned in interest is $2220, so we can say,
-0.03x+2940 = 2220
-0.03x = 2220-2940
-0.03x = -720
x = -720/(-0.03)
x = 24000 dollars is the amount invested at 4%
42000-x = 42000-24000 = 18000 dollars was invested at 7%
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As a check, we can see that
18000+24000 = 42000
and also
0.04x = 0.04*24000 = 960 earned from the first account
0.07*18000 = 1260 earned from the second account
1260+960 = 2220 is the total interest earned from both accounts combined
This confirms our answers.
Answer:
x=4
Step-by-step explanation:
Since both triangles are similar, you can make an equation 12/5x-2 = 16/6x. When you cross multiply you get 72x=80x-32. Then you transfer the 80x and you get -8x = -32. Then you divide by -8 and you get x=4.
Answer:2284
Step-by-step explanation:
<em>2</em><em>5</em><em>%</em><em> </em><em>of</em><em> </em><em>4</em><em>0</em>
<em>=</em><em>2</em><em>5</em><em>/</em><em>1</em><em>0</em><em>0</em><em>×</em><em>4</em><em>0</em>
=<em>0</em><em>.</em><em>2</em><em>5</em><em>×</em><em>4</em><em>0</em>
<em>=</em><em>1</em><em>0</em><em> </em><em>answer</em><em>.</em>
En la primera tiñes que poner un tres en la parte de abajo y subir 5 para ariba y as lo mismo con los demás pero con los números que te ensaña espero esto te ayudo
