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3 years ago

Can you please help on this please

Mathematics

1 answer:

aliya0001 [1]3 years ago

8 0

Answer:

a) x (x + 3)

b) 2x (x - 4)

c) 3x (2 + 3x^2)

d) 4x^2 (3x - 1)

Step-by-step explanation:

Hope this helps :)

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The principal P is borrowed at a simple interest rate r for a period of time t. Find the loan's future value A, or the total a

Julli [10]

The loan's future value A, or the total amount due at time t is $1105.

Given, P = $1000, r = 3.5%, t = 3 months.

We need to find the loan's future value A.

<h3>What is Simple interest?</h3>

Simple interest is computed on the principal amount of a loan or the first deposit in a savings account. Simple interest does not compound, therefore an account holder will only get interest on the principal, and a borrower will never have to pay interest on previously collected interest.

We know that, $Simple Interest=\frac{P\times\ T \times\ R }{100}$

Now, $Simple Interest=\frac{1000\times3\times3.5}{100\times12}$

$=\frac{10,500}{100} =105$

As we know, $Amount=Principal+Simple Interest$

$=1000+105=1105$

Hence, the loan's future value A, or the total amount due at time t is $1105.

To know more about simple interests visit:

brainly.com/question/25663053?referrer=searchResults

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6 0

2 years ago

13....................

Mashcka [7]

13.

(a)

$y=-5x^2+21x-3$

for x = 2:

$y=-5(2)^2+21(2)-3=-20+42-3=19$

for x = 5

$y=-5(5)^2+21(5)-3=-125+105-3=-23$

(b)

The graph is:

(c)

Using the graph:

$\begin{gathered} x=1.8,y=18.6 \\ x=0.548,y=7 \\ x=3.65,y=7 \end{gathered}$ $\begin{gathered} x=1.8 \\ y=-5(1.8)^2+21(1.8)-3=-16.2+37.8-3=18.6 \end{gathered}$ $\begin{gathered} y=7 \\ -5x^2+21x-3=7 \\ -5x^2+21x-10=0 \end{gathered}$

Using the quadratic formula:

$\begin{gathered} x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ x=\frac{-21\pm\sqrt[]{21^2-4(-5)(-10)}}{2(-5)} \\ x=\frac{-21\pm\sqrt[]{241}}{-10} \\ x=0.54758 \\ or \\ x=3.6524 \end{gathered}$