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Eva8 [605]
3 years ago
15

What is the coefficients of x² in (2-3x) (x²-5)​

Mathematics
2 answers:
aniked [119]3 years ago
5 0

Answer:

+2

Step-by-step explanation:

=> (2-3x)(x^2-5)

=> (2x^2-10-3x^3+15x)

<em>Arranging it in descending order</em>

=> -3x^2+2x^2+15x-10

<u><em>So, the coefficient of x² in this expression is +2</em></u>

SOVA2 [1]3 years ago
3 0

This depends if you are supposed to simplify the binomials first:

If you leave it in the form provided then the coefficient would be 1

However, you can multiply the binomials together in order to simplify the expression:

(2 - 3x)( {x}^{2}  - 5)

(2  \times  {x}^{2} ) + (2 \times  - 5) + ( - 3x \times  {x}^{2} ) + ( - 3x  \times  - 5)

{ - 3x}^{3}  +  {2x}^{2}  + 15x - 10

Which then shows the coefficient would be 2

So it all depends on the directions provided, I would assume the correct answer is 2 if the directions are the exact same as provided on Brainly.

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HELP PLEASE BE QUICK
SVEN [57.7K]

Answer:

8

Step-by-step explanation:

<u>Area of a circle = πr^2</u>

64π / π = πr^2 / π

sqrt(64) = sqrt(r^2)

8 = r

Answer:  8

3 0
3 years ago
If $190 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in
dangina [55]

Answer:

$295.01

Step-by-step explanation:

Using the compounding continuously formula, we are looking for A.  We have that P = 190; r = .11 (always use the decimal form of the rate!); and t = 4.  Filling in we have:

A=190e^{(.11)(4)}

Simplifying that multiplication:

A=190e^{.44}.

On your calculator, raise e to the .44 power to get

A = 190(1.552707219) and

A = $295.01

5 0
3 years ago
If 5 miles is 8 kilometers, which of the following is correct? A. 47.5 miles is 76 kilometers B. 52.5 miles is 86 kilometers C.
RUDIKE [14]

Answer:

A.47.5 miles is 76

Step-by-step explanation:

in real life its like 76.44, but im rounding

4 0
3 years ago
Compound interest of $1000 is invested at 10% compounded continuously, the future value s at any time t in years is given by s=1
crimeas [40]

Answer: 6.93 years

Step-by-step explanation:

Given

Rate of interest is r=10\%

Future value is given by s=1000e^{0.1t}

For the investment to double itself, i.e. s=2000

\Rightarrow 2000=1000e^{0.1t}\\\Rightarrow 2=e^{0.1t}\\\\\text{Taking log both sides}\\\\\Rightarrow \ln 2=0.1t\\\\\Rightarrow t=\dfrac{\ln 2}{0.1}\\\\\Rightarrow t=6.93\ \text{years}

It takes around 6.93 years to double the investment.

8 0
3 years ago
What's the value of this expression ? 40-(3x2)x6
natita [175]
4

40-(3x2)x6
40-6x6
40-36
4
3 0
3 years ago
Read 2 more answers
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