Answer:
10
Step-by-step explanation:
x = Edith's age = 20 years
y = Ronald's age
x = 20 = y/4
y = 20×4 = 80 years
in z years we have
(x + z) = (y + z)/3
(20 + z) = (80 + z)/3
3(20 + z) = 80 + z
60 + 3z = 80 + z
60 + 2z = 80
2z = 20
z = 10
in 10 years Edith's age will be 1/3 of Ronald's age.
then Edith will be 30, and Ronald will be 90.
30 = 90/3
correct.
Answer:
h(t) = -16t^2 + 49.64t + 5
Step-by-step explanation:
The above choice is the only one that makes the height function be a downward-opening parabola and gives h(0) = 5, the initial height of the baseball.
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Any function starting with 16t^2 will not have any positive x-intercepts.
Answer:
The answer to this question is
Angle at C is 35
Angle at D is 81
Angle at E is 64
because y=6
Answer:
80 degrees
Step-by-step explanation:
100 + angle A = 180
180-100= 80
So, the measure of angle A is 80 degrees
<u>Answer:</u>
These set of lengths cannot be the side lengths of a right angled triangle.
<u>Step-by-step explanation:</u>
Pythagoras Theorem is always followed by a right angled triangle. According to which the sum of squares of the two shorter legs is equal to the square of the longest leg.

So here, 17 is the longest leg and 7 and 12 the shorter ones.
Applying Pythagoras Theorem to these lengths to find out.


Therefore, these set of lengths cannot be the side lengths of a right angled triangle.