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Evgesh-ka [11]
3 years ago
8

Area of a circle? Need to know for big test tomorrow

Mathematics
2 answers:
Aleksandr [31]3 years ago
7 0
To find the area of a circle find the radius and square it then multiply by PI

Area = PI x r^2
SCORPION-xisa [38]3 years ago
7 0
 A = \pi  r^{2} Hope this helps!
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At last week's track meet, Stacy ran 9/12 of a km, Jules ran 4/5 of a km, and Raul ran 3/4 of a mile. Which two students ran the
koban [17]

Answer:  No two students ran same distance

Step-by-step explanation:

Given

Stacy ran \frac{9}{12} of a km i.e.

\Rightarrow 1\times \dfrac{9}{12}=\dfrac{3}{4}=0.75\ km

Jules ran \frac{4}{5} of a km i.e.

\Rightarrow 1\times \dfrac{4}{5}=0.8\ km

Raul ran \frac{3}{4} of mile i.e.

\Rightarrow 1\times \dfrac{3}{4}=0.75\ miles\\\\\text{1 mile=1.6 km}\\\\\Rightarrow 0.75\ miles=1.2\ km

So, no two students ran the same distance.

6 0
2 years ago
Why does a triangle have 3 sides?
Levart [38]
The word "triangle" came into use in Late Middle English directly from the Latin "triangulus" by dropping the Latin "us" ending. 

Triangulus is a compound word made of two Latin words.

<span>Tri, is a prefix form of tres, which means three (3)<span>Angulus, meaning corner.</span></span>
7 0
3 years ago
Read 2 more answers
What is the solution of square root of x plus twelve equals x
Bess [88]

Answer:

x=4

Step-by-step explanation:

√x+12=x

x+12=x2(Square both sides)

x+12=x2

x+12−x2=x2−x2(Subtract x^2 from both sides)

−x2+x+12=0

(−x−3)(x−4)=0(Factor left side of equation)

−x−3=0 or x−4=0(Set factors equal to 0)

x=−3 or x=4

x=−3(Doesn't work in original equation)

x=√x+12

7 0
3 years ago
Read 2 more answers
Point A' is the image of point A when point A is rotated about the origin B. What angle in the counterclockwise direction is
Elza [17]

9514 1404 393

Answer:

  90° CCW

Step-by-step explanation:

The slope of BA is -1/3. The slope of BA' is 3, so the slopes are opposite reciprocals of one another. These segments are perpendicular, meaning the angle between them is 90°.

Point A' has been rotated 90° CCW about point B.

8 0
3 years ago
Someone please help with these and explain your answer for both!!! I will give brainliest if correct!!!
goldenfox [79]

Answer:

C

Step-by-step explanation:

We have congruent angles in the middle and 2 sides are congruent as well which makes (Angle-Side-Side) which doesn't work for congruent triangles.

3 0
2 years ago
Read 2 more answers
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