All categories

3 years ago

sam received $1120 interest from his 4 year investment at 3.5% p.a. simple interest. how much did sam invest?.

Mathematics

2 answers:

yuradex [85]3 years ago

8 0

Answer:

$8000

Step-by-step explanation:

The method for calculating simple interest (I) is

I = $\frac{PRT}{100}$

where P is the principal, R is interest rate, T is time in years

here I = 1120, R = 3.5, T = 4 and P is to be found, thus

1120 = $\frac{P(3.5)(4)}{100}$ ( multiply both sides by 100 )

3.5 × 4 × P = 112000

14P = 112000 ( divide both sides by 14 )

P = $\frac{112000}{14}$ = $8000

galina1969 [7]3 years ago

6 0

The answer is $8000.

Have a great day

You might be interested in

Write a linear equation based on given information. Through (5,-5) and (4,0)

Katena32 [7]

For this case we have that by definition, the equation of the line of the slope-intersection form is given by:

$y = mx + b$

Where:

m: It is the slope of the line

b: It is the cut point with the y axis

We have the following points:

$(x_ {1}, y_ {1}) :( 5, -5)\\(x_ {2}, y_ {2}) :( 4,0)$

We find the slope:

$m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {0 - (- 5)} {4-5} = \frac {5} {- 1} = - 5$

Thus, the equation is of the form:

$y = -5x + b$

We substitute a point and find b:

$0 = -5 (4) + b\\0 = -20 + b\\b = 20$

Finally, the equation is:

$y = -5x + 20$

Answer:

$y = -5x + 20$

6 0

3 years ago

Help me plzzzzzzzzzzzzzz

notsponge [240]

I think it’s the bottom one

3 0

3 years ago

Read 2 more answers

Solve by elimination <br>x+y= 0 <br>2x-y= 12

dezoksy [38]

Answer:

m=2

Step-by-step explanation:

I calculated it sorry

5 0

3 years ago

Read 2 more answers

6(m-1) = 3(3m + 2) Show all work

nordsb [41]

Answer:

$\boxed{\sf m = -4}$

Step-by-step explanation:

$\sf Solve \: for \: m: \\ \sf \implies 6 (m - 1) = 3 (3 m + 2) \\ \\ \sf Expand \: out \: terms \: of \: the \: left \: hand \: side: \\ \sf \implies 6 m - 6 = 3 (3 m + 2) \\ \\ \sf Expand \: out \: terms \: of \: the \: right \: hand \: side: \\ \sf \implies 6 m - 6 = 9 m + 6 \\ \\ \sf Subtract \: 9 m \: from \: both \: sides: \\ \sf \implies (6 m - 9 m) - 6 = (9 m - 9 m) + 6 \\ \\ \sf 6 m - 9 m = -3 m: \\ \sf \implies -3 m - 6 = (9 m - 9 m) + 6 \\ \\ \sf 9 m - 9 m = 0: \\ \sf \implies -3 m - 6 = 6 \\ \\ \sf Add \: 6 \: to \: both \: sides: \\ \sf \implies (6 - 6) - 3 m = 6 + 6 \\ \\ \sf 6 - 6 = 0: \\ \sf \implies -3 m = 6 + 6 \\ \\ \sf 6 + 6 = 12: \\ \sf \implies -3 m = 12 \\ \\ \sf Divide \: both \: sides \: of \: -3 m = 12 \: by \: -3: \\ \sf \implies \frac{ - 3m}{ - 3} = \frac{12}{ - 3} \\ \\ \sf \frac{ - 3}{ - 3} = 1: \\ \sf \implies m = \frac{12}{ - 3} \\ \\ \sf - \frac{12}{3} = - 4 : \\ \sf \implies m = - 4$

7 0

3 years ago

What is the result of 96 divided by 6?8 12 16 or 32

hram777 [196]

96 divided by 6 is 16

96 divided by 8 is 12

96 divided by 12 is 8

96 divided by 16 is 6

96 divided by 32 is 3

8 0

3 years ago

Read 2 more answers