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3 years ago

If the simple interest on $7,000 for 2 years is 980, then what is the interest rate?

Mathematics

1 answer:

Harrizon [31]3 years ago

4 0

Answer:

Step-by-step explanation:

since the formula says si=ptr/100

so we have to separate r which gives us r =(i ×100)/(p×t)

now putting the values (980×100)/(7000×2)

therefore the rate of interest is 7%

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3 years ago

Could someone answer and explain these please? Thank you!

Oksana_A [137]

Answer 1:

It is given that the positive 2 digit number is 'x' with tens digit 't' and units digit 'u'.

So the two digit number x is expressed as,

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The two digit number 'y' is obtained by reversing the digits of x.

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Now, the value of x-y is expressed as:

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So, $9(t-u)$ is equivalent to (x-y).

Answer 2:

It is given that the sum of infinite geometric series with first term 'a' and common ratio r<1 = $\frac{a}{1-r}$

Since, the sum of the given infinite geometric series = 200

Therefore, $\frac{a}{1-r}=200$

Since, r=0.15 (given)

$\frac{a}{1-0.15}=200$

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So, the second term of the geometric series is 25.5

Step-by-step explanation:

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2 years ago

The area of a rectangle is 42 square feet.

Alchen [17]

Answer:

26 ft and 46 ft.

Step-by-step explanation:

The prime factors of 42 are 2 * 3 * 7.

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L = 7, W = 6 giving a perimeter of 2*7 + 2*6 = 26 ft.

L = 14 , W = 3 giving perimeter = 34 ft.

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2 years ago