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Nonamiya [84]
3 years ago
6

Add the following polynomials, then write the answer in descending powers of x

Mathematics
1 answer:
Margarita [4]3 years ago
8 0

Answer:

5x^3-4x-1

Step-by-step explanation:

https://www.symbolab.com/solver/step-by-step/2x%5E%7B3%7D%2B4x-6%20%2B%203x%5E%7B3%7D-8x%2B7

I use symbolab, it's the best calculator for everything. Hope this helps!

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Calculate the simple interest on $1500 for 3 years at 20% per annum
svp [43]

Answer:

see explanation below

Step-by-step explanation:

1500 × 3 × 20 ÷ 100

$900

4 0
3 years ago
the ages of three siblings are all consecutive integers the sum of their ages is 39 how old is the youngest sibling variable equ
Verdich [7]

Answer:

Step-by-step explanation:

Let x = the age of the youngest child

Let x + 1 = the age of the middle child

Let x + 2 = the age of the oldest child

x + x + 1 + x + 2 = 39

3x + 3 = 39

3x = 36

x = 12 years

8 0
3 years ago
5 fifths × 3 fifteinths =?
Pachacha [2.7K]

Answer:

1/5 or 0.2 i hope this helped you

8 0
3 years ago
If the if a cylinder is 7 in tall and has a volume of 63 Pi inches what is the area of the cross section it goes right down the
vitfil [10]

Answer: 9\pi \ in.^2

Step-by-step explanation:

Given

The height of the cylinder is h=7\ in.

The volume of the cylinder is V=63\pi \ in.^3

The volume of the cylinder is the product of area and height

\Rightarrow V=\pi r^2h\\

Insert the values

\Rightarrow 63\pi =A\times 7\\\\\Rightarrow A=\dfrac{63\pi}{7}\\\\\Rightarrow A=9\pi\ in.^2

Thus, the area of the cross-section is 9\pi \ in.^2

7 0
2 years ago
If ƒ(x) = 2x2 + 3, then which of the following represent ƒ(x + 1)?
romanna [79]
Sub (x+1) for x

f(x+1)=2(x+1)^2+3
f(x+1)=2(x^2+2x+1)+3
f(x+1)=2x^2+4x+2+3
f(x+1)=2x^2+4x+5

D is answer
3 0
3 years ago
Read 2 more answers
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