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2 years ago

If 3 - 3k-1 = 81, what is the value of k?

Mathematics

2 answers:

andreyandreev [35.5K]2 years ago

8 0

Answer: (C) 4

Have a good day.

brilliants [131]2 years ago

7 0

Answer:

Step-by-step explanation:

I plugged in everything and 3x9 times 3=81

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What are the possible rational zeros of f(x)=x^4+2x^3-3x^2-4x+20?

Mice21 [21]

Roots test tells us to take the factors of the 20 divided by the factors of the coefficient of the the first.

factors of 20 are 1,2,4,5,10,20
factors of 1 are 1

so plus or minus 1/1, 2/1, 4/1, 5/1, 10/1, 20/1 are all possible rational zeros

8 0

3 years ago

?????????????!???????!???!?????

Archy [21]

Answer:

249.6

Step-by-step explanation

There are 4 identical equilateral triangle,

we can find the area of one and multiply by 4

area of triangle = $\frac{1}{2} *base*hight=\frac{1}{2}*12*10.4=62.4$

now 62.4*4 = 249.6

6 0

3 years ago

restaurant serves three types of omelettes. Surveys were taken of the last two days of orders and are displayed in the table bel

Ede4ka [16]

Answer:

The answer is 120

Step-by-step explanation:

Hope it helps

4 0

3 years ago

Read 2 more answers

Can anyone please explain? Need some help :)

DedPeter [7]

Answer:

93.5 square units

Step-by-step explanation:

Diameter of the Circle = 12 Units

Therefore:

Radius of the Circle = 12/2 =6 Units

Since the hexagon is regular, it consists of 6 equilateral triangles of side length 6 units.

Area of the Hexagon = 6 X Area of one equilateral triangle

Area of an equilateral triangle of side length s = $\dfrac{\sqrt{3} }{4}s^2$

Side Length, s=6 Units

$\text{Therefore, the area of one equilateral triangle =}\dfrac{\sqrt{3} }{4}\times 6^2\\\\=9\sqrt{3} $ square units$

Area of the Hexagon

$= 6 X 9\sqrt{3} \\=93.5$ square units (to the nearest tenth)$

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3 years ago

Explain how you can use the distributive property to check the binomial factors when a trinomial has been factored. Include an e

erica [24]

What you can do is split one of the binomials and then apply the distributive property if f(x) = (x + 3)(x -2) split the 1st binomial f(x) = x(x -2) + 3(x -2) now apply the distributive property to get
f(x)=x2−2x+3x−6
which simplifies to
f(x)=x2+x−6

4 0

3 years ago

Read 2 more answers