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IgorLugansk [536]
3 years ago
12

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

Mathematics
2 answers:
kati45 [8]3 years ago
7 0
$8000 is the answer.
miv72 [106K]3 years ago
4 0
Total is 1120
interest is 3.5
interest earn in 1 yr be p
so is p/ 100 × 3.5 ×4 = 1120
1120÷4= p/100x 3.5
280=p/100 x 3.5
280÷3.5= p/100
80=p/100
p= 8000
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Find the value of t (s(5))​
drek231 [11]

Answer and Step-by-step explanation:

We are given a <u>composite function</u>, which are functions inside of functions.

When solving composite functions, we solve the function on the inside first, then the function on the outside.

s(5) = s(x)

x = 5

<u>Plug 5 into the function s(x)</u>

= 2(5) + 1

= 11

<u>Now we plug 11 in for x for the function t(x).</u>

= -2(11)^2+2

= -2(121) + 2

= -242 + 2

= -240

<u>So, the answer to t(s(5) is -240.</u>

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6 0
3 years ago
What are the answers for 1-4 this is geometry.
elena-s [515]

Answer/Step-by-step explanation:

1. x*21 = 24*14 (intersecting chords theorem)

21x = 336

x = 336/21

x = 16

2. 27*x = 45² (secant-tangent rule)

27x = 2,025

x = 2,025/27

x = 75

3. (x + 5)*5 = (4 + 6)*6 (Intersecting secants theorem)

5x + 25 = (10)*6

5x + 25 = 60

5x = 60 - 25

5x = 35

x = 35/5

x = 7

4. (4x + 2)*8 = (5x + 1)*7

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Collect like terms

32x - 35x = -16 + 7

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6 0
3 years ago
The combined age of three relatives is 120 years. James is three times the age of Dan, and Paul is two times the sum of James an
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Step-by-step explanation:

6 0
4 years ago
Anthony invested $36,000 in an account paying an interest rate of 5.3% compounded
Westkost [7]

Answer:

3.8 months

Step-by-step explanation:

Question: Anthony invested $36,000 in an account paying an interest rate of 5.3% compounded

quarterly. Assuming no deposits or withdrawals are made, how long would it take, to

the nearest year, for the value of the account to reach $51,800?

First step! What is 5.3% of 36k?

1,908

Second Step! Divide

51,800/1,908= 27.1488469602

Third Step! Round

27.1488469602= 27.1

27.1 weeks.

7 weeks in a month.

12 months in a year.

27.1/7= 3.8

3.8 months

5 0
3 years ago
Read 2 more answers
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