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Hatshy [7]
3 years ago
15

A stockbroker has money in three accounts. The interest rates on the three accounts are 7%, 8%, 9%. If she has twice as much mon

ey invested at 8% as she does in 7% Three times as much at 9%
as she has at 7%, and the total interest for the year is $150 how much is invested at each rate?


The stockbroker invested $___at 7%,$___at 8%, and $___at 9%
Mathematics
1 answer:
Sveta_85 [38]3 years ago
5 0

Answer:

x=amount invested at 7%

2x=amount invested at 8%

3x=amount invested at 9%

interest=principal*rate*time (time=1 year)

$150=0.07x+0.08*2x+0.09*3x

$150=0.07x+0.16x+0.27x

$150=0.50x

$1500=5x

x=$300 invested at 7%

2x=$600 invested at 8%

3x=$900 invested at 9%

Step-by-step explanation:

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3 less than or equal to x less than or equal to 13

3 ≤ x ≤ 13

Step-by-step explanation:

6 0
3 years ago
A jar can hold of a pound of flour. Austin empties of a pound of flour into the jar. What fraction of the jar is filled? Enter y
11111nata11111 [884]

Answer:

<em>2/3 of the jar was filled with flour</em>

Step-by-step explanation:

The question is incomplete. Here is the complete question.

<em>A jar can hold 3/4 of a pound of flour. Austin empties 1/2 of a pound of flour into the jar. What fraction of the jar is filled? Enter your answer in numerical form.</em>

<em />

Given

<em>Amount a jar can hold a = 3/4 of a pound of flour</em>

<em />

<em>If Austin empties 1/2 of a pound of flour into the jar, then the amount emptied into the jar b = 1/2 pounds</em>

<em />

<em>Fraction of jar filled will be expressed as b/a as shown;</em>

<em>b/a = (1/2)/(3/4)</em>

<em>b/a = 1/2 ÷ 3/4</em>

<em>b/a = 1/2 * 4/3</em>

<em>b/a = 4/6</em>

<em>Simplify to the lowest term</em>

<em>a/b = 2*2/2*3</em>

<em>a/b = 2/3</em>

<em />

<em>Hence 2/3 of the jar was filled with flour</em>

4 0
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Find the equation of the line with a slope of 4 that goes through the following point: (6,2)
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y=4x-22

Step-by-step explanation:

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Pls help with this math
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Answer:

44.58

Step-by-step explanation:

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5 0
2 years ago
Help! Jeez these are hard.
Irina18 [472]

Answer:

option 2

Step-by-step explanation:

a colored in dot is less than or equal to or greater than or equal to while an uncolored dot is less then or greater than. arrow going left of the number is less than arrow going right is greater than. the problem is a is greater than 4/5 so an uncolored dot shout be on 4/5 going to the right

3 0
3 years ago
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