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2 years ago

The temperature this morning was −12 °C. This afternoon, the temperature dropped by 6 degrees. What is the new temperature?

Mathematics

1 answer:

aleksandrvk [35]2 years ago

8 0

Answer:

-18

Step-by-step explanation:

Because if it increased it would be -6 not -18.

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What are possible values of the number?

klio [65]

Answer:

I think is F

Step-by-step explanation:

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3 years ago

Does anyone know how to solve this?

erik [133]

Answer:

A point in polar coordinates is written as (R, θ)

If we want to transform this point to rectangular coordinates, we get:

x = R*cos(θ)

y = R*sin(θ)

Now we can remember that the sine and cosine functions have a period of 2*pi, then:

cos(θ) = cos(θ + 2*pi)

or:

cos(θ) = cos(θ + 2*pi + 2*pi)

and so on.

Then the point (R, θ) is the same as (R, θ + 2*pi) and (R, θ + k*(2*pi))

where k can be any integer number.

Then if we have a point in polar coordinates:

(-4, -5*π/3)

Then another two polar representations of this point are:

(-4, -5*π/3 + 2*π) = (-4, -5*π/3 + 6*π/3) = (-4, π/3)

Now we can not add 2*π (nor subtract) because we would have an angle outside the range [-2*π, 2*π]

For example, if we have:

(-4, π/3 + 2*π) = (-4, 7*π/3)

And we can not change the value of the radius and get the coordinates for the same point.

So another representation could be something like:

(-8/2, π/3)

Where i just wrote -4 in another way.

Now, a really important point.

When working with polar coordinates, we always use R as a positive number (here you can see that R is negative) so this is not the standard notation for the polar representation of a point.

8 0

3 years ago

I need a-e to be solved I’m confused still

monitta

A) 36 means that there are 36 students taking Italian and music AT SAME TIME

b) 59 means that there are 59 students taking only music

c) 48 means that there are 48 students taking neither Italian nor music

d) Italian OR Music = 97 + 36 +59 = 192

e) Do not take Italian: 48 + 59 = 107

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3 years ago

Dale has a special deck of cards. Each card has a different rational number on it. The cards are 0.25, 4/5, 2/9, 0.48, and 8/11.

Mila [183]

Answer:

explain this question more clearer pls

Step-by-step explanation:

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3 years ago

The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident th

Aleks04 [339]

Answer: