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Goshia [24]
3 years ago
14

PLEASE HELP ASAP

Mathematics
1 answer:
Svet_ta [14]3 years ago
3 0

The Answer fam is......... D) (1,2)

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The surface area of the cone is 43.75pie cm^2. What is the slant height of the cone and the diameter is 5
Masteriza [31]
If the diameter of the cone is 5, then the radius of it will be half that, or 2.5, thus

\bf \textit{total surface area of a cone}\\\\
SA=\pi r\stackrel{slant~height}{\sqrt{r^2+h^2}}+\pi r^2~~
\begin{cases}
r=radius\\
h=height\\
------\\
SA=43.75\pi \\
r=2.5
\end{cases}
\\\\\\
43.75\pi =\pi (2.5)\sqrt{r^2+h^2}+\pi (2.5)^2
\\\\\\
43.75\pi -\pi (2.5)^2=2.5\pi \sqrt{r^2+h^2}
\\\\\\
43.75\pi -6.25\pi =2.5\pi \sqrt{r^2+h^2}\implies 37.5\pi =2.5\pi \sqrt{r^2+h^2}
\\\\\\
\cfrac{37.5\pi }{2.5\pi }=\sqrt{r^2+h^2}\implies 15=\sqrt{r^2+h^2}
3 0
4 years ago
If p(x) = x2 - 1 and 4(x) = 5(x-1), which expression is equivalent to (p - 9)(x)?
bogdanovich [222]

Answer:

x^2 - 10 = (p - 9)(x)

Step-by-step explanation:

Please indicate exponentiation with the symbol " ^ ":  p(x) = x^2 - 1.

To obtain (p - 9), start with p(x) = x^2 - 1 and subtract 9:

(p - 9)(x) = x^2 - 1 - 9 = x^2 - 10 = (p - 9)(x)

7 0
3 years ago
What is 3x2 [-2 3 0. -4 2 6. 6 -5 6.]
densk [106]

Answer:

3 x 2 = 6

Step-by-step explanation:

By multiplying both 3 and 2, it equals to 6.

Hope this helps! :)

7 0
3 years ago
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2 years ago
I have 100 cubes plus 70 cubes. How many trains of cubes i have
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You have one hundred seventy cubes
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3 years ago
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