The temperature is -2 deg C . If the temperature rises by 15 deg C what is the new temperature ?
2 answers:
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Answer:
The required equation is:
Step-by-step explanation:
We need to find equation from the table given
x f(x)
3 -5
7 -2
11 1
15 4
We can write equation in the form of
where m is slope and b is y-intercept.
Finding Slope
We can used the slope formula to find slope:
From the table we have:
Putting values and finding slope
So, we get slope
Now, finding y-intercept
Using the slope and point (3,-5) we can find y-intercept
The y-intercept is
So, the equation having slope and y-intercept
will be:
The required equation is:
Answer:
1. 121 π unit²
2. 143°
3. 151 unit²
Step-by-step explanation:
1.
Area of a circle is given by the formula A = πr²
where
A is the area,
r is the radius of the circle
From the given diagram, we can see that the radius is 11, hence the area will be:
The answer is units^2
2.
The unshaded secctor and the shaded sector equals the circle. We know that circle is 360°. The unshaded sector has an angle of 217°. So the shaded part will be 360 - 217 = 143°
The measure of the central angle of the shaded sector is 143°
3.
Area of a sector is given by the formula
Where
is the central angle of the sector (in our case it is 143°)
r is the radius (which is 11)
Plugging in all the info into the formula we have:
<em>rounding to the nearest whole number, it is </em>151 units^2