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olganol [36]
3 years ago
14

I Need some help with this answer :)))))

Mathematics
1 answer:
gladu [14]3 years ago
6 0

Answer:

it is 5 1/4

Step-by-step explanation:

you reduce the fraction by 2 then you answer that Wich give you 21/2 then gives you 5 1/4

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1/8 of the brass instruments are too if there are 240 instruments in the band how many are tubas
grin007 [14]
1/8 of 240= 1/8 x 240. So 1/8 of 240 is 30.
4 0
3 years ago
Given: ∆ABC, m∠C = 90° CB = 8, m∠B = 38º Find the area of a circumscribed circle. Find the area of the inscribed circle.
vitfil [10]

Answer:

Circumscribed circle: Around 80.95

Inscribed circle: Around 3.298

Step-by-step explanation:

Since C is a right angle, when the circle is circumscribed it will be an inscribed angle with a corresponding arc length of 2*90=180 degrees. This means that AB is the diameter of the circle. Since the cosine of an angle in a right triangle is equivalent to the length of the adjacent side divided by the length of the hypotenuse:

\cos 38= \dfrac{8}{AB} \\\\\\AB=\dfrac{8}{\cos 38}\approx 10.152

To find the area of the circumscribed circle:

r=\dfrac{AB}{2}\approx 5.076 \\\\\\A=\pi r^2\approx 80.95

To find the area of the inscribed circle, you need the length of AC, which you can find with the Pythagorean Theorem:

AC=\sqrt{10.152^2-8^2}\approx 6.25

The area of the triangle is:

A=\dfrac{bh}{2}=\dfrac{8\cdot 6.25}{2}=25

The semiperimeter of the triangle is:

\dfrac{10.152+6.25+8}{2}\approx 24.4

The radius of the circle is therefore \dfrac{25}{24.4}\approx 1.025

The area of the inscribed circle then is \pi\cdot (1.025)^2\approx 3.298.

Hope this helps!

6 0
3 years ago
Need the answer <br> the question is in the picture
SOVA2 [1]

Answer:

d= -5

Step-by-step explanation:

6 0
2 years ago
7x-x ............................ .
oee [108]

Answer:

6x

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is 6 divided into 3,540
satela [25.4K]

Answer:

590

Step-by-step explanation:

..................

5 0
2 years ago
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