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Scrat [10]
3 years ago
7

PLEASE HELP ON THESE 2

Mathematics
1 answer:
marishachu [46]3 years ago
3 0
The answers to these problems are 1.B and 2.C
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1/3( x - 10 ) = -4 solve for x​
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the answer for x is 1 because 1/3 should be multiplied by x and x is one

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Mathswatch: Factorise x^2-42^2
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Answer:

x^{2} -1764

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6 0
3 years ago
Sergio works at a bakery and needs to cover
Elan Coil [88]

Answer:

The surface area that Sergio needs to frost on each cake is 3,238 square centimeters

Step-by-step explanation:

The picture of the question in the attached figure

we know that

The surface area of the cylindrical cake is equal to the lateral area plus the area of the top of cylinder (remember that the bottom of the cake does not need frosting)

so

SA=\pi r^{2}+2\pi r h

we have

r=40.2/2=20.1\ cm ---> the radius is half the diameter

h=15.6\ cm

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substitute the given values

SA=(3.14)(20.1)^{2}+2(3.14)(20.1)(15.6)

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SA=3,238\ cm^2

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