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aliina [53]
3 years ago
9

I NEED HELP PLEASE!!!! THANK

Mathematics
1 answer:
Feliz [49]3 years ago
4 0
The symbols around the numbers in the list are absolute value bars.. they refer to the actual distance the number inside is away from "0" on a number line.  Since we always represent distance in positive terms, we can really assume the list will be  2,3, 7, 4....

the average of this list can be found by adding the 4 numbers and dividing by 4:
16 ÷ 4 = 4
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n the month of June, the temperature in Johannesburg, South Africa, varies over the day in a periodic way that can be modeled ap
Sveta_85 [38]

T = - 7.5 Cos π/12( t - 4 ) + 10.5 varies over the day in a periodic way that can be modeled approximately by a trigonometric function.

<h3>What is trigonometric function?</h3>

The trigonometric functions are actual functions that relate a right-angled triangle's angle to side length ratios. They are extensively employed in all geosciences, including navigation, solid mechanics, celestial mechanics, geodesy, and many more.

<h3>According to the given information :</h3>

Maximum temp. = 18 degree Celsius

Minimum temp. = 3 degree Celsius

The half way between 10 am and 10 pm is 4 am

Temperature data changes throughout the year can be modeled using the sine and cosine functions. The following form of equation can be used to model these data:

T = A cos B(t - C) + D, where A,B,C,D, are constants, T is the  temperature in °C and t is the hour (1–24)

A = amplitude = (Tmax - Tmin)/2

A = (3 - 18)/2 = - 15/2 = -7.5

B = 2π/24 = π/12

C = units translated to the right

C = 4

D = ymin + amplitude = units translated up

D = 7.5 + 3 = 10.5

The formula of the trigonometric function that models the temperature T in Johannesburg t hours after midnight we be

T = - 7.5 Cos π/12( t - 4 ) + 10.5

To know more about trigonometric function visit:

brainly.com/question/16389848

#SPJ4

4 0
1 year ago
Which expression is equivalent to 1-2/3^-3?<br> A. -27<br> B -9<br> C 9<br> D 27
alexandr402 [8]

Answer:

1−2^-3/3

=1−1/8/3

=1−1/24

=23/24

3 0
3 years ago
Please helloollllllppppp
ipn [44]
Total blocks = 35+47+22+21 = 125

Sum of red blocks and green blocks = 47+35 = 82

So the probability = 82/125 = 0.656
3 0
3 years ago
Read 2 more answers
I need this to be explained and have the answer thanks I AM BEGGING YOU!!!!!!!!!!!!
Firdavs [7]

Answer:

  Store A has a better deal because $402.90 is less than $404.10.

Step-by-step explanation:

<u>Store A</u>

The $25 off coupon reduces the price to ...

  $499 - 25 = $474

The discount from this amount is 15%, so is ...

  $474 × 0.15 = $71.10

The final amount paid is then ...

  $474.00 -71.10 = $402.90

(<em>Side note</em>: you can select the correct answer at this point, because only one answer shows this value.)

___

<u>Store B</u>

After the $20 off coupon, the price is ...

  $469 -20 = $449

The additional 10% discount amounts to ...

  $449 × 0.10 = $44.90

So, the final price is ...

  $449.00 -44.90 = $404.10

___

Now, you know that Store A offers the better price because $402.90 is less than $404.10.

6 0
3 years ago
Helpppppppppppppppppppp
lesya [120]

Answer:

• An angle

Step-by-step explanation:

A line, line segment, ray are named by two points

A plane is named by 4 points

3 0
3 years ago
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