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vazorg [7]
2 years ago
9

HELLLPPPPPPPP!!!!!!!!!!!!!!!!!!!!! I WILL GIVE BRAINLIEST!!!!!!!!!! I WILL GET GROUNDED IF I DON'T GET THIS TURNED IN!!!!!!!!!!!

!!
A newspaper reports the following changes in the temperature of a city over 4 days:

3.24 degrees Celsius, negative 3 over 8 degrees Celsius, −0.15 degrees Celsius, 7 over 9 degrees Celsius

Write an expression to show the average daily change in the temperature of the city.

Write the steps to solve the expression. Round your answer to the nearest hundredth. (10 points)
Mathematics
2 answers:
kupik [55]2 years ago
4 0

Answer:

It is 0.873 but rounded to hundredth is 0.87

Step-by-step explanation:

expression: (3.24-3/8+7/9-0.15) divided by 4

Solve:  (3.24+7/9-3/8-0.15) divided by 4

= (3.24+0.78-0.375-0.15) divided by 4

=3.49/4

-0.873 = 0.87 to the nearest hundred

degress celcius

r-ruslan [8.4K]2 years ago
3 0

Answer:

To find the average of anything you find the mean so 3.24+-3/8+-0.15+7/9 all divided by 4 as that's the number of days you want to find the average of =0.87° degrees

So 0.87 degrees is the average temperature for the 4 days

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x+2y+3z=11

2x+y+2z=10

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D = values of the linear equation (11 , 10 , 9)

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A = \left[\begin{array}{ccc}1&2&3\\2&1&2\\3&2&1\end{array}\right]  = 1(1-4) - 2(2-6) + 3(4 - 3)

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we will be replacing the first column of the coefficient matrix A with the values of D

by replacing the first column we will get the value of the variable 'x'

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so we have the solution as

x = 2 , y = 0 , z = 3

Therefore the solution for the given linear equations is (2,0,3).

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