Find the lcm of 7 and 12 show your work.

Mathematics

1 answer:

babymother [125]3 years ago

7 0

The factors of 7 are 7, 1.
The factors of 12 are 12, 6, 4, 3, 2, 1.
12*7=84

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Answer choices : A.27 B.32 C.34 D.39

ololo11 [35]

x = 27° (A)

Step-by-step explanation:

5x° + (x + 18)° = 180°

(5x + x)° + 18° = 180°

6x° + 18° = 180°

6x° = 180° - 18°

6x° = 162°

x° = 162 ÷ 6

x° = 27°

So, the value of x is 27° (A)

Hope it helpful and useful :)

7 0

3 years ago

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Work out 5^-2 x cube root of 8 Answer in decimal form please.

Zinaida [17]

Answer:

0.08

Step-by-step explanation:

${5}^{ - 2} \times \sqrt[3]{8} \\ \\ = {5}^{ - 2} \times \sqrt[3]{ {2}^{3} } \\ \\ = \frac{1}{ {5}^{2} } \times 2 \\ \\ = \frac{1}{25} \times 2 \\ \\ = \frac{2}{25} \\ \\ =0.08$

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3 years ago

What is the answer lol somebody help me please and thank you !

PilotLPTM [1.2K]

I'm guessing that you know about 45-45-90 and 30-60-90 triangles.

In 45-45-90 triangles, the legs are in a ratio such that the hypotenuse is $\sqrt{2}$ times the legs.

In 30-60-90 triangles, the legs are in a ratio of 1: $\sqrt{3}$ :2

In the picture given we have been given a value of the side of the 45-45-90 triangle. We can deduce that the value of the hypotenuse is 9 $\sqrt{2}$ because of the ratio of the sides of a 45-45-90 triangle.

The 30-60-90 triangle shares the same hypotenuse, and so we now know a value of one of its sides as well. The ratio of the side of value 'x' and the hypotenuse is $\sqrt{3}$ : 2

We can create an equation to solve for x using these ratios:

$\frac{\sqrt{3} }{2}$ = $\frac{x}{9\sqrt{2} }$