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Mice21 [21]
3 years ago
10

Hello i need help with these questions asap!!

Mathematics
1 answer:
makvit [3.9K]3 years ago
3 0

We use direct proportionality:

360⁰......Pi×R² (full circle)

120⁰.......x

x=120×pi×R²/360=pi×R²/3

x=pi×4²/3=16.76mi²

A=3×pi cm², for an angle of 2×pi/3=120⁰

In a similar way we compute the area of the full circle:

360.........x

120..........3×pi

x=3×pi×360/120=9×pi=3²×pi.

Thus the radius is 3cm.

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Answer:

In​ 2012, the population of a city was 5.72 million.

Step-by-step explanation:

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On a piece of paper, graph y>x-1. Then determine which answer choice
zepelin [54]

The graph that matches the given equation is y≥x-1 is Graph A.

Option: C.

<u>Step-by-step explanation:</u>

The given equation y≥x-1 is a linear inequality equation.

Graphing Linear Inequalities differs from graphing regular linear equations. That is it has certain rules to be followed to draw the graph.

  1. First, rearrange the equation as y in the left and other terms in the opposite side.
  2. Check for the line: y= , y≤ and y≥ comes with straight line where as y< and y> comes with a dotted line.
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For the given equation y≥x-1,

The line will be solid passing through (0,-1) and (3,2) since it has y≥. Also, the region above the line is shaded.

So the graph A is the graph that matches the equation y≥x-1.

8 0
3 years ago
HELP ASAP PLEASE I BEG TOU
nevsk [136]

Answer:

(0,-2)

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What are the solutions of x^2+6x=10
posledela

Answer:

x=-3+√19, x=-3-√19

Step-by-step explanation:

x^2+6x=10

x^2+6x-10=10-10

x^2+6x-10=0

a=1 b=6 c=-10 - use the quadratic formula

x=-3+√19, x=-3-√19

I hope this helps!

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Emily brought 48 yards of fabric to make curtains. How many inches of fabric did Emily buy?
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1728 is the correct answer 
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