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miss Akunina [59]
3 years ago
11

Solve (2x^2-3x)(x^3-4x)​

Mathematics
1 answer:
kirill [66]3 years ago
8 0

Answer: 2x5−3x4−8x3+12x2

Step-by-step explanation:

(2x2−3x)(x3−4x)

=(2x2+−3x)(x3+−4x)

=(2x2)(x3)+(2x2)(−4x)+(−3x)(x3)+(−3x)(−4x)

=2x5−8x3−3x4+12x2

=

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You deposit $20,000 in an account that pays 7.77% annual interest. Find the balance after 2 years when the interest is compounde
zvonat [6]

Answer:

=$23,350.802

Step-by-step explanation:

Compound Interest (A)=P(1+r/n)^nt

Where,

P=principal=$20,000

r=Interest rate=7.77%=7.77/100

=0.0777

n=number of periods=12 month in a year

t=time=2 years

(A)=P(1+r/n)^nt

=$20,000(1+0.0777/12)^12×2

=$20,000(1+0.006475)^24

=$20,000(1.006475)^24

=$20,000(1.1675401)

=$23,350.802

3 0
3 years ago
Find all values of m so that the function y = xm is a solution of the given differential equation. (Enter your answers as a comm
blagie [28]

Answer:

m = 6,9  

Step-by-step explanation:

We are given that y = x^m is a solution to given differential equation.

x^2y'' - 14xy' + 54y = 0  

First we 3evaluate the value of:

y'' = m(m-1)x^{(m-2)}

y' = mx^{(m-1)}

Putting these value in the above differential equation, we get,

x^2m(m-1)x^{(m-2)} + 14xmx^{(m-1)} + 54x^m = 0

x^m[m(m-1) -14m + 54] = 0

x^m(m^2 - 15m + 54) = 0

(m^2 - 15m + 54) = 0

(m-9)(m-6) = 0

m = 9,6

Thus, for m = 9,6 , the function y = x^m is a solution of given differential equation.

8 0
3 years ago
Fifteen more than 3 times a number is 33. What is the equation and solve
kati45 [8]

Answer:

x = 6

Step-by-step explanation:

15 more represents “+15”

3 times a number represents “3*x” which is written as “3x”

So fifteen more than 3 times a number is 33 would be written as;

3x + 15 = 33

Now solve for x using algebra;

3x = 33 - 15

3x = 18

x = 18 / 3

<u>x = 6</u>

Hope this helps!

4 0
3 years ago
Read 2 more answers
Why is it helpful to write numbers in different ways
Goshia [24]
You should write numbers in as many ways as you possibly can to make new connections in your brain. Knowing how to write numbers in many different ways can help you solve complex problems more easily. Doing this can also reinforce the mathematical principles and logic you have memorised.

Writing one in many different ways:

1=1/1=2/2=3/3=4/4=(-1)/(-1)=(-2)/(-2)

=1.0=1.00=1.000=(1/2)+(1/2)=(1/3)+(1/3)+(1/3)

=(1/4)+(1/4)+(1/4)+(1/4)

Writing a half in many different ways:

1/2=(1/4)+(1/4)=(1/6)+(1/6)+(1/6)

=(1/8)+(1/8)+(1/8)+(1/8)=4*(1/8)

=2/4=3/6=4/8=5/10=0.5=0.50

etc...etc...
6 0
3 years ago
Your project requires a board that has a length of 5 3/16 inches. You found a board that has a length of 9 1/8 inches. How much
Anna11 [10]

Answer: 3 + 15/16 inches

Step-by-step explanation:

You need (5 + 3/16) inches, and you have (9 + 1/8) inches, then the amount that you need to cut is equal to the difference between these numbers, this is:

(9 + 1/8) - (5 + 3/16) = (9 - 5) + (1/8 - 3/16) = 4 + (2/16 - 3/16) = 4 - 1/16

now, this notation is used for aditions, so we can write it as:

4 - 1/16 = 3 + 1 - 1/16 = 3 + 16/16 - 1/16 = 3 + 15/16

Then the amount that needs to be cuted is 3 + 15/16 inches

7 0
4 years ago
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