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Anettt [7]
3 years ago
7

On Monday, the temperature changed -12 degrees, after one full day. Assuming the temperature dropped at a constant rate, how man

y degrees were lost after 12 hours? Please show or explain your calculations
Mathematics
1 answer:
uranmaximum [27]3 years ago
3 0

<em>i don't speak italics </em>

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Help please, thanks :)
tensa zangetsu [6.8K]

Answer:

60°

Step-by-step explanation:

Angle 1 is a vertical angle to 60° by the definition of a vertical angle.

8 0
3 years ago
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Use Gauss-Jordan elimination to solve the following linear system.
marysya [2.9K]
Just put the coefients in to a matrix

1x-6y-3z=4
-2x+0y-3z=-8
-2x+2y-3z=-14

\left[\begin{array}{ccc}1&-6&-3|4\\-2&0&-3|-8\\-2&2&-3|-14\end{array}\right]
mulstiply 2nd row by -1 and add to 3rd
\left[\begin{array}{ccc}1&-6&-3|4\\-2&0&-3|-8\\0&2&0|-6\end{array}\right]
divde last row by 2
\left[\begin{array}{ccc}1&-6&-3|4\\-2&0&-3|-8\\0&1&0|-3\end{array}\right]
multiply 2rd row by 6 and add to top one
\left[\begin{array}{ccc}1&0&-3|-14\\-2&0&-3|-8\\0&1&0|-3\end{array}\right]
multiply 1st row by -1 and add to 2nd
\left[\begin{array}{ccc}1&0&-3|-14\\-3&0&0|6\\0&1&0|-3\end{array}\right]
divide 2nd row by -3
\left[\begin{array}{ccc}1&0&-3|-14\\1&0&0|-2\\0&1&0|-3\end{array}\right]
mulstiply 2nd row by -1 and add to 1st row
\left[\begin{array}{ccc}0&0&-3|-12\\1&0&0|-2\\0&1&0|-3\end{array}\right]
divide 1st row by -3
\left[\begin{array}{ccc}0&0&1|4\\1&0&0|-2\\0&1&0|-3\end{array}\right]

rerange
\left[\begin{array}{ccc}1&0&0|-2\\0&1&0|-3\\0&0&1| 4\end{array}\right]

x=-2
y=-3
z=4
(x,y,z)
(-2,-3,4)

B is answer
7 0
2 years ago
Evaluate the expression below:<br> bb-a)<br> for b = 8, a = 4<br><br><br> HS Math
kondaur [170]
The answer will be 60 because 8*8=64 then subtract 4
7 0
2 years ago
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Please include an explanation of B thank you!!​
Eddi Din [679]

Answer:

A. $67

B. 6 percent

Step-by-step explanation:

Explain B: divide the earning last month by a percent knowing that the 20% is 67 the value should be less then 10%.

4 0
3 years ago
Using the graph below, calculate the average rate of change for f(x) from x = 2 to x = 6.
katovenus [111]

Answer:

The answer is 1

Step-by-step explanation:

we know that

For x=2

the value of f(2)=2 -----> see the graph

For x=6

the value of f(6)=6 -----> see the graph

The average rate of change using the graph is equal to

\frac{f(b)-f(a)}{b-a}

In this problem we have

f(a)=f(2)=2

f(b)=f(6)=6

a=2

b=6

Substitute the values

\frac{6-2}{6-2}

\frac{4}{4}=1

7 0
3 years ago
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