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3 years ago

The number 0.9 is a(n) __________ number.

Mathematics

1 answer:

BigorU [14]3 years ago

5 0

I just did it and it was rational

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Find the product and simplify your answer.<br> -3x(6x3 - 5x + 5)

Len [333]

Answer:

Step-by-step explanation:

product: -18x4 + 15x2 - 15x

the simplification just ends up being the original equation.

4 0

2 years ago

(2a+b)/(2a-b) <br><br> / - division sign

MA_775_DIABLO [31]

Answer:

WHAT ON EARTH

Step-by-step explanation:

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2 years ago

A cone's height is equal to the radius of its base. The area of its base is 1,386 square units. The approximate radius of the co

maxonik [38]

Answer:

21 units
9702 units³

Step-by-step explanation:

The area of the base is given by the formula ...

A = πr²

so the radius is ...

r = √(A/π) = √(1386/(22/7)) = √441 = 21 . . . units

The volume is given by ...

V = (1/3)Bh

where B is the area of the base, and h is the height (equal to the radius). Filling in the numbers, we have ...

V = (1/3)(1386)(21) = 9702 . . . . cubic units

4 0

3 years ago

What is the answer to this?

Trava [24]

Answer:

Step-by-step explanation:

The formula of a volume of a cylinder:

$V=\pi r^2H$

r - radius

H - height

We have

$2r=4\ in\to r=2\ in\\\\H=8\ in$

Substitute:

$V_1=\pi(2^2)(8)=\pi(4)(8)=32\pi\ in^3$

The formula of a volume of a cone:

$V=\dfrac{1}{3}\pi r^2H$

We have

$r=2\ in\\\\H=0.7\ in$

Substitute:

$V_2=\dfrac{1}{3}\pi(2^2)(0.7)=\dfrac{1}{3}\pi(4)(0.7)=\dfrac{1}{3}\pi(2.8)=\dfrac{2.8\pi}{3}=\dfrac{28\pi}{30}=\dfrac{14\pi}{15}\ in^3$

The volume of the plastic object:

$V=V_1-V_2$

$V=32\pi-\dfrac{14\pi}{15}=\dfrac{480\pi}{15}-\dfrac{14\pi}{15}=\dfrac{466\pi}{15}\\\\\pi\approx3.141\\\\V\approx\dfrac{466}{15}\cdot3.141\approx97.6$

7 0

2 years ago

Donna is taller than David but shorter than bill. dan is shorter than Bob. wha is the first letter in the name of the tallest pe

natka813 [3]

It would be B.
David Donna bill
Dan bob

6 0

2 years ago