Need help please !!!!! Will mark as brainliest!!!! (Don’t mind my answers)
1 answer:
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Answer:
Two distinct real solutions.
Step-by-step explanation:
Given the equation in the form , you need to find the Discriminant with this formula:
For the equation you can identify that:
Then, substituting these values into the formula, you get that the Discriminant is:
Since , then
has two distinct real solutions.
The hardest part is finding the length of the curve at the top. To find arc length, multiply the circumference by the arc angle divided by full angle (360°) in a circle. Or:
x, the arc angle in a semicircle, is 180°.
r, the radius is 7/2 = 3.5.
Now just plug the numbers in and solve for arc length, s.
s = 2π(3.5)(1/2) ≈ 11.00
Now just add up all the sides. 11cm + 10cm + 10cm + 7cm = 38 cm.
x, the arc angle in a semicircle, is 180°.
r, the radius is 7/2 = 3.5.
Now just plug the numbers in and solve for arc length, s.
s = 2π(3.5)(1/2) ≈ 11.00
Now just add up all the sides. 11cm + 10cm + 10cm + 7cm = 38 cm.