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Marianna [84]
2 years ago
5

PLEASE HELP!!! LOOK AT PIC PLEASE!!

Mathematics
1 answer:
love history [14]2 years ago
5 0

Answer: C, D

Step-by-step explanation:

Acute angles of right triangles are complementary, and the sine of an angle is equal to the cosine of its complement.

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Since the school was opened the number of students has increased 60%. There are 240 students. Calculate the number of the studen
Alja [10]

Answer:

150 students

Step-by-step explanation:

60% = 0.6

x + 0.6x = 240

1.6x = 240

x = 240/1.6

x = 150

7 0
2 years ago
A circle is cut into congruent sections and arranged to form a figure that approximates a parallelogram. Find the approximate he
Solnce55 [7]

Answer:

<h2>The height is 3.43 centimeters, approximately.</h2>

Step-by-step explanation:

Notice that there are 16 pieces from the circle, which means each sector has an angle of

\theta = \frac{360\°}{16}=22.5\°

Where all sectors have equal area.

Now, the area of the whole circle is 12.25 \pi \ cm^{2}, if we use the formula of its area, we'll find the radius of the circle

A= \pi r^{2}\\ 12.25\pi = \pi r^{2}\\ r=\sqrt{12.25} \approx  3.5

Notice that each piece works as an isosceles triangle, because each side is the radius, that is, they have the same length. So far, we know the sides of the isosceles triangle and one internal angle.

To find the height of the one piece, we need to use trigonometric reasons, because the height divides a triangle in two equal right triangles.

cos(11.25\°)=\frac{h}{3.5}\\ h=3.5 \times cos(11.25 \°)\\h \approx 3.43

Therefore, the height is 3.43 centimeters, approximately.

6 0
3 years ago
Parallel lines r and s are cut by two transversals, parallel lines t and u.
Fiesta28 [93]

Answer:

5 and 13

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is constant of proportionality ? y=14x k=?​
Delvig [45]

Answer: I believe that its 14

Step-by-step explanation:

6 0
3 years ago
Can somebody please help
Afina-wow [57]
I think it’s d as well
6 0
3 years ago
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