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puteri [66]
3 years ago
12

Help please for 13 coins

Mathematics
2 answers:
dezoksy [38]3 years ago
8 0

Answer:

-146.03008

do you have to show work?

taurus [48]3 years ago
5 0

Answer:

-146.03008

Step-by-step explanation:

(-8.149)(17.92) = -146.03008

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Find the radius of a circle with a circumference of 35<img src="https://tex.z-dn.net/?f=%5Cpi" id="TexFormula1" title="\pi" alt=
dusya [7]

Answer:

17.5  yds =r

Step-by-step explanation:

Circumference is given by

C = 2*pi*r

35pi = 2 *pi*r

Divide each side by 2pi

35pi/2pi = 2*pi*r/2pi

17.5 =r

4 0
3 years ago
This net can be folded to make a square pyramid. what is the surface area of the pyramid
givi [52]

Answer:  

85in^2

Step-by-step explanation:

to find the surface area we need to find the followng areas:  

  • area of the square  
  • area of a triangle and multiply it by 4 (because there are 4 triangles)

And once we have those areas, we add them to find the surface area.

Area of the square:

the formula to find the area of a square is:

a_{square}=l^2

where l is the length of the side: l=5in

thus the area of the square is:

a_{square}=(5in)^2

a_{square}=25in^2

Area of the triangles:

the are of 1 triangle is given by

a_{triangle} =\frac{b*h}{2}

where b is the base of the triangle: b=5in (the base of the triangle is the side of the square)

and h is the height of the triangle: h=6in

thus, the area of 1 triangle is:

a_{triangle} =\frac{(5in)*(6in)}{2}

a_{triangle} =\frac{30in^2}{2}

a_{triangle} =15in^2

the area of the 4 triangles is (we multiply by 4):

a_{4-triangles}=4(15in^2)

a_{4-triangles}=60in^2

finally we add the area of the square and the area of the 4 triangles to find the total surface area:

Surface=25in^2+60in^2

Surface=85in^2

8 0
2 years ago
Which function below is the inverse of f(x) = x2 − 9?
Scorpion4ik [409]
F (x)=y
y=2x-9


X Y
-2 -15 y=2 (-2)-9
y=-4+-9
y=-15

-1 -11 y=2 (-1)-9
y=-2+-9
y=-11

0 -9 y=2 (0)-9
y=0+-9
y=-9

1 -7 y=2 (1)-9
y=2+-9
y=-1

2 -5 y=2 (2)-9
y=4+-9
y=-5

Here is all the work
6 0
3 years ago
Read 2 more answers
Evaluate the function.<br> Find f(O) when f(x) = x2 + 5x - 6.
brilliants [131]

Answer:

The answer is -6.

Step-by-step explanation:

0^2 = 0

5(0) = 0

0+0-6=-6

3 0
3 years ago
Which sets of angles listed are supplementary in this diagram?
AlladinOne [14]

Supplementary angle = Angels which add up to 180 degrees
Angle CED
6 0
2 years ago
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