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Firlakuza [10]
3 years ago
14

A sequence is defined by the formula f(n+1)=f(n)- 3 if f( 4)=22what's is f(1)

Mathematics
1 answer:
NikAS [45]3 years ago
8 0
f(n+1)=f(n)- 3\\
f(n)=f(n+1)+3\\\\
f(3)=22+3=25\\
f(2)=25+3=28\\
f(1)=28+3=31
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Mary wants to buy a new house but needs money for the down payment. Her parents agree to lend her money at an annual rate of 2%,
lukranit [14]

Answer:

a) Simple interest paid = $360

b) Total repayment amount = $6360

Step-by-step explanation:

It is given that:

Principal, P = $6000

Rate of interest, R = 2%

Time, T = 3 years

<em>(a) Total interest paid</em>:

<u>Formula</u> for Simple Interest is given as:

S.I. = \dfrac{P \times R \times T}{100}

Putting the values of P, R and T to find out Simple Interest:\\\Rightarrow S.I. = \dfrac{6000 \times 2 \times 3}{100}\\\Rightarrow S.I. = \$360

<em>(b) Total repayment amount</em>:

We know that formula for total amount is given as:

<em>Amount = Principal + Simple Interest</em>

Amount = 6000 + 360 = $6360

So, total repayment amount = $6360

So, the answers are:

a) Simple interest paid = $360

b) Total repayment amount = $6360

3 0
3 years ago
What is the rate of change between (-32,0) and (-31,2)
Brums [2.3K]
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8 0
2 years ago
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Rashid [163]
She should use a computer to select 30 students at random then ask which ones play chess. The other options could produce more skewed results.
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3 years ago
Which of the following is true of the discriminant for the graph below?
Sonbull [250]

Answer:

<u>Option C. It is zero</u>

Step-by-step explanation:

The graph represents a quadratic equation

The quadratic equation has the form ⇒a x² + b x + c

The discriminant of the quadratic equation is D = b² - 4ac

From the discriminant of the quadratic equation, we can know the type of roots of the quadratic equation.

  1. If D > 0 ⇒ Two real roots.
  2. If D = 0 ⇒ one real roots
  3. If D < 0 ⇒ Two imaginary roots.

The roots of the quadratic equation are the x-intercepts of the function.

As shown at the figure, the quadratic equation has only one point of intersection with the x-axis

So, the function has only one root ⇒ D = 0

So, the discriminant of the quadratic equation = 0

<u>The answer is option C. It is zero</u>

7 0
3 years ago
I need help solving 11 3/4 minus 8 2/10
melomori [17]

Answer:

The answer is 3 11/20

Step-by-step explanation:

Subtract whole numbers, 11 - 8 = 3

Then combine fractions 3/4 - 2/10= 11/20

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4 0
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