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Elan Coil [88]
2 years ago
7

Can someone help me please? I don't understand what I need to do​

Mathematics
1 answer:
Nastasia [14]2 years ago
3 0

Answer:

You need to find what X= then put the answer in the box to the left

Step-by-step explanation:

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Ipatiy [6.2K]

Answer:

The second one

Step-by-step explanation:

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2 years ago
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There are 16 books on a shelf. 7 of these books are new. The rest of them are used. What is the ratio of used books to new books
ZanzabumX [31]

Answer:

9:7

Step-by-step explanation:

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3 years ago
The three side lengths of a triangle are represented by x, (x+10), and (x+5) units. The perimeter of the triangle is 75 units. W
ollegr [7]

Answer:

if the perimeter is 75 units and the side lengths are x + 10 and x + 5 it would probably be plus 60 to make it 75

8 0
2 years ago
Help! Help!
Nina [5.8K]

Answer:

1. 50%

2.100%

3.0%

4.100%

Step-by-step explanation:

Use https://www.mathsisfun.com/data/standard-deviation-calculator.html for later references.

8 0
3 years ago
Brook makes this conjecture: Because the angles are equal, the proportion of area of each sector relative to the area of the giv
AnnZ [28]

Answer:

The Brooks conjecture is true as the proportion of the area of a sector to the area of a circle is only dependent on the angle.

Step-by-step explanation:

The area of a sector for a radius r and an angle θ is given as

\Delta Sector=\dfrac{1}{2}r^2\theta

Whereas the area of a circle for a radius r is given as

\Delta Circle=\pi r^2

Now the ratio is given as

\dfrac{\Delta Sector}{\Delta Circle}=\dfrac{\dfrac{1}{2}r^2\theta}{\pi r^2}

Here as r is the radius of the circle and it is the same therefore the above ratio is simplified to

\dfrac{\Delta Sector}{\Delta Circle}=\dfrac{\theta}{2\pi }

Here as π is constant the only variable here is θ. Thus according to Brooks conjecture when the angles are equal, the proportion of area of each sector relative to the area of the given circle is also equal is true.

6 0
3 years ago
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