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Zepler [3.9K]
3 years ago
8

Find the surface area of the cone. Round your answer to the nearest tenth.

Mathematics
1 answer:
Alexus [3.1K]3 years ago
5 0

Answer:

S. A. = 15.7

Step-by-step explanation:

S . A. = πrl+πr²

3.14 x 1 = 3.14

3.14 x 4 = 12.56

3.14 x 1 x 1 = 3.14

12.56 + 3.14 = 15.7

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Expanding brackets (2x + 4)(x - 6)
Natalija [7]

Answer:

=2x²-8x-24 is the answer

Step-by-step explanation:

=(2x+4)(x-6)

opening brackets by multiplying

=2x(x-6)+4(x-6)

=2x²-12x+4x-24

adding like terms

=2x²-8x-24

i hope this will help you :)

5 0
3 years ago
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For a certain bathtub, the hot water faucet can fill the tub in 13 minutes. The cold water faucet can fill the tub in 12 minutes
marusya05 [52]
The answer to your problem dear friend is 5 min, depending on the tub size
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3 years ago
Which sequence of transformations will map figure K onto figure K′? Two congruent kites, figure K and figure K prime, are drawn
elixir [45]

Answer:

The sequence of transformations will map figure K onto figure K′

is the first sequence <u>option (1)</u>

======================================================

Step-by-step explanation:

See the attached figure

as shown in the figure the K' is the image of K by reflection over x-axis

<u>But </u> We need to know which sequence of transformations will give the same result.

So, we will test the options by any point from K and its image from K'

i.e: we will test the options using the points (6,5) , (6,-5)

(6,5) ⇒ (6,-5)

<u>option (1):</u>

Reflection across x = 4, 180° rotation about the origin, and a translation of (x + 8, y)

(6,5) ⇒ (2,5) ⇒(-2,-5) ⇒ (6,-5)

<u>option (2):</u>

Reflection across x = 4, 180° rotation about the origin, and a translation of (x − 8, y)

(6,5) ⇒ (2,5) ⇒(-2,-5) ⇒ (-10,-5)

<u>option (3):</u>

Reflection across y = 4, 180° rotation about the origin, and a translation of (x + 8, y)

(6,5) ⇒ (6,3) ⇒ (-6,-3) ⇒ (2,-3)

<u>option (4):</u>

Reflection across y = 4, 180° rotation about the origin, and a translation of (x − 8, y)

(6,5) ⇒ (6,3) ⇒ (-6,-3) ⇒ (-14,-3)

As shown: The sequence of transformations will map figure K onto figure K′

is the first sequence <u>option (1)</u>

7 0
4 years ago
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the waiting time to ride a roller coaster is 20 minutes when 150 people are in line. how long is the waiting time when 240 peopl
Margaret [11]
We have an equation: 20/?= 150/240

Cross multiply:
150*?= 20*240
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The final answer is 32 minutes~
6 0
3 years ago
What shapes has parallel sides only​
olga2289 [7]

Square, Rectangle and Rhombus

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