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Lynna [10]
3 years ago
11

Part A: Which of the following points are on the same line that passes through the (7,-7),(21,14),(49,35)? Select all

Mathematics
1 answer:
puteri [66]3 years ago
5 0
It is C hope i helped you!;)
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Angles 1 and 2 are complementary. If Angle 1 measures 29.6º, then what is the measure of Angle 2? º
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Answer:

60.4 degrees

Step-by-step explanation:

Complementary angles are 2 angles that add up to the sum of 90 degrees.

90-29.6=60.4 degrees

Hope this helps!

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What is the percentage of 12(1.33)?
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9.022556390 is 12/ 1.33
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Write <br> 1<br> 16<br> as a decimal.<br><br> A) 0.00625 <br> B) 0.0625 <br> C) 0.625 <br> D) 6.25
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Step-by-step explanation:

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3 years ago
An isosceles trapezoid ABCD with height 2 units has all its vertices on the parabola y=a(x+1)(x−5). What is the value of a, if p
horrorfan [7]

Answer:

a = -0.3575

Step-by-step explanation:

The points A and D lie on the x-axis, this means that they are the x-intercepts of the parabola, and therefore we can find their location.

The points A and B are located where

y=a(x+1)(x-5)=0

This gives

x=-1

y=5

Now given the coordinates of A, we are in position to find the coordinates of the point B. Point B must have y coordinate of y=2 (because the base of the trapezoid is at y=0), and the x coordinate of B, looking at the figure, must be x coordinate of A plus horizontal distance between A and B, i.e

B_x=A_x+\frac{2}{tan(60)} =-1+\frac{2\sqrt{3} }{3}

Thus the coordinates of B are:

B=(-1+\frac{2\sqrt{3} }{3},2)

Now this point B lies on the parabola, and therefore it must satisfy the equation  y=a(x+1)(x-5).

Thus

2=a((-1+\frac{2\sqrt{3} }{3})+1)((-1+\frac{2\sqrt{3} }{3})-5)

Therefore

a=\frac{2}{((-1+\frac{2\sqrt{3} }{3})+1)((-1+\frac{2\sqrt{3} }{3})-5)}

\boxed{a=-0.3575}

8 0
3 years ago
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