2 years ago

Help show work pleaeee

Mathematics

2 answers:

Inga [223]2 years ago

7 0

SA = 2 $\pi rh$ +2 $\pi$ $r^2$

1. Find the radius.

R = 1/2D

6 x 1/2 = 3

R = 3

2. Plug them in.

SA 2(3.14)(3)(7) + 2(3.14)(3^2)

3. Solve

3 x 7 = 21

21 x 3.14 = 65.94

65.94 x 2 = 131. 88

3^2 = 9

9 x 3.14 = 28.26

28.26 x 2 = 56.52

4. Add them together.

131.88 + 56.52 = 188.4

Answer: 188.4 square millimeters

stepan [7]2 years ago

5 0

Answer:

169.52

Step-by-step explanation:

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Math help what is the answer will give brainliest.

artcher [175]

The two equations are
$x + y = 7$
and
$4x + 2.5y = 22$
the first equation can be solved for x to be
$x = 7 - y$
next you can substitute x in the second equation
$4(7 - y) + 2.5y = 22$
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$28 - 4y + 2.5y = 22$
combine like terms:
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divide both sides by -1.5
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plug this in to the original equation of x+y=7
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subtract 4 from both sides.
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Final Answer: they bought 3 adult tickets and 4 student tickets

Hope this helps!

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