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3 years ago

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Mathematics

1 answer:

SVEN [57.7K]3 years ago

8 0

Answer:

x = 30

Step-by-step explanation:

The sum of the 3 interior angles of a triangle = 180°, hence

x + x + 10 + 3x + 20 = 180

5x + 30 = 180 ( subtract 30 from both sides )

5x = 150 ( divide both sides by 5 )

x = 30

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In math class, the ratio of boys to girls in the class is 12:8. What is the ratios of the total number of students to the number

julsineya [31]

20:12

i think. 20 being the number of total students to 12 which is the number of boys

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2 years ago

The Pyraminx is a Rubik's cube-type toy in the shape of a tetrahedron. The Pyraminx shown below has edges 15\,\text{cm}15cm long

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Answer:

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Step-by-step explanation:

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2 years ago

HELP

Aleks [24]

Answer:

c) 6

Step-by-step explanation:

This is a straight-forward application of the Law of Cosines:

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2 years ago

Find four numbers that form a geometric progression such that the third term is greater than the first by 12 and the fourth is g

olchik [2.2K]

If $x$ is the first number in the progression, and $r$ is the common ratio between consecutive terms, then the first four terms in the progression are

$\{x,xr,xr^2,xr^3\}$

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In the second equation, we have

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and in the first, we have

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So now we have

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Then the four numbers are

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3 years ago

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Maksim231197 [3]

125 > 50 + 4.25*p

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He may invite up to 17 people ( if he doesn't have to pay for himself)

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3 0

3 years ago