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Paul [167]
3 years ago
7

What is the rule for the reflection?

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
8 0
The rule for the reflection is (B)
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At a fundraiser, a school group charges $6 for tickets for a "grab bag." You choose one bill at random from a bag that contains
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Answer:

124

Step-by-step explanation:

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2 years ago
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The area of a circular sun spot is growing at a rate of 1,200 km2/s.
Tpy6a [65]
A)

\bf \textit{area of a circle}\\\\
A=\pi r^2
\\\\\\
\cfrac{dA}{dt}=\pi \cdot 2r\cfrac{dr}{dt}\implies \cfrac{dA}{dt}=2\pi r\cfrac{dr}{dt}\implies \cfrac{\frac{dA}{dt}}{2\pi r}=\cfrac{dr}{dt}\\\\
-----------------------------\\\\
\left. \cfrac{dr}{dt}  \right|_{r=3000}\implies \cfrac{1200}{2\pi \cdot 3000}=\cfrac{dr}{dt}\\\\

B)

\bf A=\pi r^2\qquad A=490000\implies 490000=\pi r^2\implies \sqrt{\cfrac{490000}{\pi }}=r
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8 0
2 years ago
X/-9 ​≥ 3
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Answer:

x ≤ -27

Hope this helps,

Davinia.

8 0
3 years ago
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Which of the following best describes the total area of the exterior surface of a solid figure?
Free_Kalibri [48]
The answer is D, Surface area
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The sum of three numbers is 120 the first number is five less than the second the third number is three times the second what ar
VladimirAG [237]

Answer:

1st number: 20

2nd number: 25

3rd number: 75

Step-by-step explanation:

x + y + z = 120

x = y - 5

z = 3y

plug that in!

(y-5) + y + (3y) = 120

remove the parenthesis (I used them to show you what I was replacing), and add like terms.

5y - 5 = 120

move -5 to the other side

5y = 120 + 5

5y = 125

divide both sides by 5

y = 25

now that you have one number, use the equations from before to solve for the rest!

x = (25) - 5

z = 3(25)

_____________________________________________________

x = 20

y = 25

z = 75

4 0
3 years ago
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