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Charra [1.4K]
3 years ago
15

Sylvia invested 500 in an account compounded annually with an interest rate of 8%. Manuel invested 600 in an account with a comp

ound interest rate of 7.25% . Using the rule of 72, who will double their money first
Mathematics
1 answer:
il63 [147K]3 years ago
8 0

Answer:

Sylvia's investment would double first

Step-by-step explanation:

The number of years it takes for amount invested to double itself using the 72 rule is 72 divided by rate of interest as computed below:

Sylvia investment:

Sylvia's investment would double in 9 years' time  (72/8)

Manuel's investment"

Manuel investment of $600 would double itself in 9.9 years' time (72/7.25)

From the above analysis,Sylvia's investment of $500 at the 8% rate of interest would double first

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aliya0001 [1]

Answer:

Both of these triangles are congruent.

Step-by-step explanation:

All 3 angle measures of both of the triangles are equivalent and correlate to each other. This makes the triangles congruent.

7 0
3 years ago
397 students went on a field trip. Eight
lbvjy [14]

Answer:48

Step-by-step explanation:

Total number of students=397

Students that travelled in a car=29

Let the students that travelled in a bus be represented by y.

Since 8 buses were filled, it will be 8y for total students

8y + 29= 397

8y= 397-29

8y= 368

Divide both side by 8

8y/8=368/8

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Number of students in each bus is 46

8 0
4 years ago
Heart beats 2,320 times during 20 minutes of rowing. While resting the heart is beating 16 times in 15 seconds. What is the diff
Mrac [35]

Answer: 0.87 times per second  (Or 52.2 times per minute)

Step-by-step explanation:

You need to make the conversion from minutes to seconds.

Remember that 1 minute has 60 seconds. Then 20 minutes to seconds is:

(20minutes)(\frac{60seconds}{1minute})=1,200seconds

Find the number of times the heart beats in 1 second when it is rowing:

x_1=\frac{(2,320times)}{1,200seconds}=1.93\ times\ per\ second

Find the number of times the heart beats in 1 second when it is resting:

x_2=\frac{(16times)}{15seconds}=1.06\ times\ per\ second

Then the difference is:

difference=(1.93-1.06)\ times\ per\ second\\difference=0.87\ times\ per\ second

(Or 52.2 times per minute)

6 0
4 years ago
Read 2 more answers
What is the slope of this graph?
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I think you might’ve forgotten to insert a picture? Feel free to reply to this with the picture of the question and I’ll do my best to help you out :)
8 0
3 years ago
Read 2 more answers
1/7 times x = 1<br> 5/4 times x=1<br> 3 1/2 times x=1<br> 5/7 times x=1
antiseptic1488 [7]
( i )

=  > \frac{1}{7}  \times x = 1 \\  \\  \\  \\  =  >  \frac{1}{7}  \times 7  \times x = 1 \times 7 \\  \\  \\  \\  =  > x = 7



( ii ) :


=  >  \frac{5}{4}  \times x = 1 \\  \\  \\  \\  =  >  \frac{5}{4}  \times  \frac{4}{5}   \times  x = 1 \times  \frac{4}{5}  \\  \\  \\  \\  = > x =  \frac{4}{5}



( iii ) :


=  >  3\frac{1}{2}    \times x = 1 \\  \\  \\  \\   =  >  \frac{7}{2}  \times x = 1 \\  \\  \\  \\  =  >  \frac{7}{2}  \times  \frac{2}{7}  \times x = 1 \times  \frac{2}{7}  \\  \\  \\  \\  =  > x =  \frac{2}{7}



( iv ) :


\frac{5}{7}  \times x = 1 \\  \\  \\  \\  =  >  \frac{5}{7}  \times  \frac{7}{5}  \times x = 1 \times  \frac{7}{5}  \\  \\  \\  \\  =  > x =  \frac{7}{5}
5 0
4 years ago
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