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Maurinko [17]
3 years ago
11

Find the sum of 4x^3 + 6x^2 +2x - 3 and 3x^3 +3x^2 -5x -5

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
3 0

Answer:

7x³ + 9x² - 3x - 8

Step-by-step explanation:

4x³ + 6x² + 2x - 3 + 3x³ + 3x² - 5x - 5 ← collect like terms

= 7x³ + 9x² - 3x - 8

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Sally agreed a compound interest of 5.5% for a fixed term. If she invested £800 to this agreement, then what was her total at th
Rom4ik [11]

Answer:

£1045.57

Step-by-step explanation:

Using compound interest formula then

A=P(1+i)^{n}

Where A= the future value of the investment/loan, including interest

P = the principal investment amount

r = the annual interest rate

n = the number of times that interest is compounded per unit t

A=800(1+0.055)^{5}\approx 1045.57

Hence her amount t the end of 5 yrs is $1045.57

3 0
2 years ago
A rational expression simplifies to 3. the denominator of the original expression is given. which polynomial is the numerator?
4vir4ik [10]

The polynomial within the numerator is 9x²+45x+54.

Given the denominator of the initial expression is \frac{?}{3x^2+15x+18} and also the rational expression simplifies to three.

A mathematical expression which will be rewritten to a rational fraction, an algebraic fraction specified both the numerator and therefore the denominator are polynomials. and a polynomial is an expression consisting of indeterminates and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

Let's take the polynomial within the numerator is k.

So, rewrite the given expression as

\frac{k}{3x^2+15x+18}=3

or it also can be written as

\frac{k}{3x^2+15x+18}=\frac{3}{1}

Cross multiply either side as a×d=b×c where a=k, b=3x²+15x+18, c=3 and d=1 and acquire

k=3(3x²+15x+18)

Simplify the above expression,

k=9x²+45x+54

Hence, the polynomial within the numerator within the given expression \frac{?}{3x^2+15x+18} which is simplified to 3 is 9x²+45x+54.

Learn about rational expression from here brainly.com/question/3764404

#SPJ4

4 0
1 year ago
This is algebra 1. You don't have to do them all but please label
Veseljchak [2.6K]

Answer:

2. X-intercept is 30

3. Y-intercept is 255

4. How long it took for elevator to go down.

5. How high up the elevator started.

I will let you do the rest ;)

6 0
3 years ago
Pls pls pls pls help. im so stressed rn
Sloan [31]

Answer:

The function role is +2 for x, and -1 for y.

Step-by-step explanation:

The reason for my answer is because as you can see on the table;

For X, it starts at 0 and counts up by 2. For Y, it starts at 2 and counts back by 1.

6 0
2 years ago
3x+2y=10 Solve the equation for y
Irina-Kira [14]

Answer:

y=-3/2x+5

Step-by-step explanation:

3x+2y=10

2y=10-3x

2y=-3x+10

y=-3/2x+10/2

y=-3/2x+5

5 0
3 years ago
Read 2 more answers
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