3 years ago

What type of number is negative 15 over 3

Mathematics

1 answer:

marta [7]3 years ago

5 0

Answer:

Rational number

Step-by-step explanation:

Rational numbers are defined as the quotient (division result) of two integers

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4 balls of wool will make 8 knitted caps. How many balls of wool will Malcolm need if he wants to make 6 caps?

Cerrena [4.2K]

Since 4 balls of wool makes 8 knitted caps we'll find out how much caps each ball makes.

8/4 = 2

Each ball makes 2 caps.

6/2 = 3

Malcolm will need 3 balls of wool to make 6 knitted caps.

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3 years ago

What is 9.773 divided by 0.12

Verizon [17]

Answer:

9.773÷0.12=81.44166667

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2 years ago

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Simplify 3(x - 6) - 4(x + 3). A)-x - 30 B)-x - 9 C)-x - 6 D)-x - 30

morpeh [17]

Answer:

-x-30

Step-by-step explanation:

first you need to distribute:

3(x)+3(-6) -4(x)+ (-4)(3)

Then you multiply:

3x+(-18)-4x+(-7)

then you combine like terms:

3x-4x= -1x 

-18+(-7)= -25

simplified:

-1x-30

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472,558 to the nearest hundred thousand

Marrrta [24]

473,000 u round up to the next thousand

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3 years ago

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(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x

Aliun [14]

As

$\tan x=\dfrac{\sin x}{\cos x}$
$\cot x=\dfrac{\cos x}{\sin x}$

we have

$\sin x(\tan x\cos x-\cot x\cos x)=\sin x\left(\sin x-\dfrac{\cos^2x}{\sin x}\right)=\sin^2x-\cos^2x$

Recalling that $\cos2x=\cos^2x-\sin^2x$ , we end up with

$-\cos2x=1-2\cos2x$
$1=\cos2x$
$\implies2x=2n\pi$

(where $n$ is any integer)

$\implies x=n\pi$

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3 years ago