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aniked [119]
3 years ago
15

What do bones do

Mathematics
1 answer:
professor190 [17]3 years ago
6 0
What do bones do?

1.) They help us keep our structure.

2.) They protect inner organs. 

3.) They produce blood cells in bone marrow. 

4.) They allow us to move. 

5.) They store minerals and some fats. 

I hope this helps!


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What is the percentage increase for a population that is changed from 438000 561000
tatiyna

Answer:

abillion

Step-by-step explanation:

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3 years ago
The outer and inner triangles are both equilateral and the circle touches all three sides of the outer triangle. If the area of
Brrunno [24]

Answer:

The area of outer Δ = 40 cm²

Step-by-step explanation:

∵ Area of the small triangle = 10 cm²

If we join the center of the circle with the 3 vertices of the inner Δ

These 3 segments are the radii of the circle

Now the inner triangle has 3 isosceles Δ their sides are r , r and s1 with vertex angle 120° ⇒ (360° ÷ 3 = 120°)

Where r is the radius of the circle and s1 is the side of the inner triangle

<em>By using cosine rule</em>

(s1)² = r² + r² - 2r²cos120 = r² + r² - 2r² (-0.5) = r² + r² + r² = 3r²

∴ s1 = r√3

∵ The radius of the circle ⊥ to the side of the outer Δ because the side of the outer Δ is a tangent to the circle

If we join a vertex of the outer Δ with the center of the circle

We will have a right angle triangle of two legs r and half s2 with angle 60° (120° ÷ 2 )between them ⇒ s2 is the side of outer Δ

∴ tan 60° = 1/2 (s2) ÷ r ⇒ √3 = 1/2 (s2) ÷ r = (s2)/2r

∴ s2 = 2r√3

∴ s2 : s1 = 2r√3 ÷ r√3 = 2 : 1

∴ The side of the outer Δ is double the side of the inner Δ

<em>By using similarity ratio</em>

A2/A1 = (s2/s1)² ⇒ A2 and A1 are the areas of outer and inner triangles

∴ A2 : A1 = (2/1)² = 4/1  

∴ A2 = 4 A1

∴ A2 = 4 × 10 = 40 cm²

5 0
3 years ago
According to the Rational Root Theorem, which number is a potential root of f(x) = 9x
MAVERICK [17]

Answer:

The answer is below....V

Step-by-step explanation:

Brainliest when you can if you will!!!!

5 0
3 years ago
Can anybody help with this?
Sonja [21]

Answer:

12

Step-by-step explanation:

Because < this means less than. So therefore 5 is less than 12

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3 years ago
You deposit $1500 in an account that pays 6% interest compounded yearly. Find the balance after 5 years.
Inga [223]

Answer:

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Step-by-step explanation:

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r: 0.06

n: 1

t: 5

1500(1+ 0.06/1)^5

1500(1.06)^5

1500×1.3

1950

3 0
3 years ago
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