3 years ago

Answer to this please with EXPLANATION! BIG POINTS!!!

Mathematics

2 answers:

Yakvenalex [24]3 years ago

8 0

Answer:

x = 4.64 units

Step-by-step explanation:

cos(72) = x/15

x = 15cos(72)

x = 4.6352549156

tatyana61 [14]3 years ago

5 0

Firstly, you have to find beta, by using triginometric function cosinus. And then use beta in the Cosine Law. X has to be smaller than the hipothenuse.

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Solve the equation -3x + 1 + 10x = x + 4 0 x = 1/2 х = x = 12 X = 18

pav-90 [236]

Answer:

Step-by-step explanation:

-3x + 1 + 10x = x + 4

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8 0

3 years ago

What is the value of x? Enter your answer in the box.

Grace [21]

The shapes are similar.
When two figures are similar, the ratios of the lengths of their corresponding sides are equal.
Therefore,
$\frac{42}{(15 + 42)} = \frac{x}{10 + x}$

Simplify:
$\frac{42}{57} = \frac{x}{10 + x}$
Cross multiply:
42(10+x) = 57x
420 + 42x = 57x
420 = 57x - 42x
420 = 15x
x = (420÷15)
x = 28