In ΔDEF, the measure of ∠F=90°, DE = 82 feet, and EF = 55 feet. Find the measure of ∠E to the nearest tenth of a degree.
2 answers:
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Answer:
Given sides 12, 16 and 20 can be the sides of right triangle.
Step-by-step explanation:
Sides of right triangle always follow the Pythagoras theorem.
i.e
For the given Lengths 7, 40 and 41
We need to check if
That means,
hence 7,40 and 41 can not be the sides of right triangle.
Next,
Given sides 12,16 and 20.
Again follow the similar process used in the above problem.
Therefore given sides 12,16 and 20 can be the sides of right triangle.
Step-by-step explanation:
m<DAC is the exterior angle of the right angle triangle, where m<ACB and m<ABC are the interior angles of the triangle opposite to the exterior angle
Sum of the opposite interior angles is equal to the exterior angle
m<ACB+ m<ABC=m<DAC
a°+90°= 119°
a°=119-90°
a°=29°
Answer:
No, the student is incorrect.
Step-by-step explanation:
First we need to find the x-intercept. You can do so by solving for the variable x, and letting y = 0.
The x-intercept of the graph of is at
, because the formula for a point on a graph is
, where the x-value comes first.
The x-value is 5, and the y-value is 0, because that is what we substituted into the equation.
In other words, when the graph touches the x-axis at 5 (5, 0), the y-value of this point of intersection will be 0.
This student is NOT correct because the point they give (0, 5) is flipped from the correct x-intercept.