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kicyunya [14]
4 years ago
12

Please help me on this question It would be nice of you

Mathematics
1 answer:
Lubov Fominskaja [6]4 years ago
5 0
Between 266.8 and 757.2
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Let f(x) = -4x - 2 and g(x) = 5x - 6. Find fxg and state its domain.
defon

Answer:

c) -20x^2+14x+12

all real numbers

Step-by-step explanation:

So (fg)(x)=f(x)g(x)=(-4x-2)(5x-6).

Need find the expression in standard form we need to use foil:

First:  (-4x)(5x)=-20x^2

Outer: (-4x)(-6)=24x

Inner:  (-2)(5x)=-10x

Last:  (-2)(-6)=12

--------------------------Add like terms:

-20x^2+14x+12

Polynomials have domain all real numbers.

There are no restrictions on what x can be.  For every number you plug in, you will get a number back.  

8 0
3 years ago
Read 2 more answers
What is the sum of the first 5 terms of a geometric series with a sub 1 = 10 and r = 1/5?
Mice21 [21]

Answer:

a 1 = 10

a 2 = 10 * 1/5 = 2

a 3 = 2 * 1/5 = 2/5

a 4 = 2/5 * 1/5 = 2/25

a 5 = 2/25 * 1/5 = 2/125

S 5 = a 1 + a 2 + a 3 +a 4 + a 5= 10 + 2 + 2/5 + 2/25 + 2/125 =

= 1250/125 + 250/125 + 50/125 + 10/125 + 2/125 = <u> 1562 / 125</u>

5 0
3 years ago
Read 2 more answers
What is 10450 rounded to the nearest hundred
Stolb23 [73]
It would be 10500. Round the 450 to 500
7 0
3 years ago
Skippy has a total of $10,000 to split between two investments. One account offers 4% simple interest, and the other account off
ki77a [65]

Skippy should invest $ 7500 in account offering 4 % interest and $ 2500 in account offering 8 % simple interest

<em><u>Solution:</u></em>

Given that Skippy has a total of $10,000 to split between two investments

One account offers 4% simple interest, and the other account offers 8% simple interest

Total interest earned = 500

Number of years = 1

Let the principal with rate of interest 4 % is x

So the principal for rate of interest 8 % is 10000 - x

Total interest earned = simple interest for 4 % interest + simple interest for 8 % interest

Simple interest is given as:

S.I = \frac{pnr}{100}

Where "p" is the principal and "r" is the rate of interest and "n" is the number of years

Therefore,

\text{ Total interest earned } = \frac{x \times 1 \times 4}{100} + \frac{10000-x \times 1 \times 8}{100}

500 = 0.04x + (10000 - x)0.08\\\\500 = 0.04x + 800 - 0.08x\\\\-300 = -0.04x\\\\x = 7500

Therefore skippy should invest $ 7500 in account offering 4 % interest

And skippy should invest (10000 - x) = (10000 - 7500) = $ 2500 in account offering 8 % interest

4 0
3 years ago
What are like terms? How do you combine them? Whats an example <br> I NEED HELP ASAP PLEASE
sergey [27]

Answer:

like terms are terms that have the same variable

Step-by-step explanation:

when combining like terms we add their coefficients for example 4x + 5x = (4+5)x=9x

7 0
3 years ago
Read 2 more answers
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