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Bumek [7]
3 years ago
5

The mean temperature for the first 4 days in January was -12°C.

Mathematics
1 answer:
tamaranim1 [39]3 years ago
3 0

Answer:

  • -17

Step-by-step explanation:

<u>Given</u>

  • The mean temperature for the first 4 days = -12°C
  • The mean temperature for the first 5 days = -13°C

<u>To find</u>

  • The temperature on the 5th day

<u>Solution</u>

  • Total of 4 days = 4*(-12) = -48°C
  • Total of 5 days = 5*(-13) = -65°C

<u>The difference is the temperature on the 5th day:</u>

  • -65 - (-48) = -17°C
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Suppose we want to choose 2 letters, without replacement, from the 4 letters A, B, C, and D.
Amiraneli [1.4K]

Answer:

Letters can be chosen in 12 different ways, if order matters, or 6 different ways, if order doesn't matter.

Step-by-step explanation:

Since we want to choose 2 letters, without replacement, from the 4 letters A, B, C, and D, to determine in how many ways can this be done, if the order of the choices matters, and in how many ways can this be done, if the order of the choices does not matter, the following calculations must be performed:

If order matters =

 

(4 x 3 x 2 x 1) / 2 = X

24/2 = X

12 = X

If the order doesn't matter =

12/2 = X

6 = X

Therefore, letters can be chosen in 12 different ways, if order matters, or 6 different ways, if order doesn't matter.

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Step-by-step explanation:

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A ball is dropped from a treetop 256 feet above the ground. How long does it take to hit the ground? (s = 16t2)
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In which quadrants of the coordinate plane is the shaded region of the system located? y ≥ x y ≤ x + 4
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I drew these, as I just did these in math not too long ago. When I shaded it, it was in all four quadrants.
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Please help, PLEASE will give brainlest answer
Korolek [52]

Answer:

SteAnswer:

y = 1/2x + 3/2

Step-by-step explanation:

Using the equation of the line

y - y_1 = m ( x - x_1)

First find the slope of the line

-2x + 4y = 8

It must be in this form

y = mx + C

4y = 8 + 2x

divide through by 4

4y/4 = 8 + 2x / 4

y = 8 + 2x/4

Let's separate

y = 8/4 + 2x/4

y = 2 + 1/2x

y = 1/2x + 2

Therefore, our slope or m is 1/2

Using the equation of the line

y - y_1 = m ( x - x_1)

With point (-5, -1)

x_1 = -5

y_1 = -1

y - (-1) = 1/2(x - (-5)

y + 1 = 1/2( x + 5)

Opening the brackets

y + 1 = x + 5 / 2

y = x + 5/2 - 1

Lcm is 2

y = x + 5 / 2 - 1/1

y = x + 5 -2/2

y = x +3/2

We can still separate it

y = x /2 + 3/2

y = 1/2x + 3/2

The equation of the line is

y = 1/2x + 3/2

The correct answer is A

brainliest?

8 0
3 years ago
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