Tic is an isosceles triangle with a vertex angle I. if the angle of I is 70. find the measure of t.
2 answers:
Answer:
∠T=55°
Step-by-step explanation:
Given: ΔTIC is an isosceles triangle with a vertex angle I
∠TIC = 70°
By definition of isosceles triangle, two sides are equal
referring to the figure, we can see that TI=IC
this implies ∠ITC = ∠ICT= x (let)
With angle sum property of triangle, sum of all the angles of triangle is 180°
therefore, ∠TIC+∠ICT+∠ITC=180°
⇒x+x+70=180°
⇒2x=110°
⇒x=55°
hence, measure of ∠T=∠C=55°
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Answer:
a) -36
b) y = -36x +34
Step-by-step explanation:
a) The slope is found using the derivative of the function.
f'(x) = dy/dx = 0 -9(2x) = -18x
Then at x=2, the slope is ...
f'(2) = -18·2 = -36
___
b) The point-slope form of the equation can be written as ...
y = -36(x -2) -38
Simplifying to slope-intercept form, we get ...
y = -36x +34
Answer:
The ratio of the difference of the two means to Sidney's mean absolute deviation = = 1.2195
Step-by-step explanation:
P.S - The exact question is -
Given - The means and mean absolute deviations of Sidney’s and Phil’s grades are shown in the table below.
Sidney’s Grades Phil’s Grades
Mean 82 78
Mean Absolute Deviation 3.28 3.96
To find - Which expression represents the ratio of the difference of the two means to Sidney’s mean absolute deviation?
Proof -
Given that Mean of Sidney Grades = 82
Mean of Phil's Grades = 78
So,
The difference of two means = 82 - 78 = 4
Also,
Given, Mean Absolute Deviation of Sydney = 3.28
Now,
The ratio of the difference of the two means to Sidney's mean absolute deviation = = 1.2195
