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olga55 [171]
3 years ago
12

Work out what x = Please and explication

Mathematics
1 answer:
Elan Coil [88]3 years ago
8 0

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Suppose Tetha = alpha = 26°

Then ;

\tan( \alpha )  =  \frac{y}{x}  \\

\tan(26°)  =  \frac{8}{x}  \\

0.487 =  \frac{8}{x}  \\

Multiply sides by x

0.487x = 8

Divide sides by 0.487

x =  \frac{8}{0.487}  \\

x = 16.427

x≈ 16.43

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

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15.5 rounded to the nearest tenth
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<span>The tenths place is to the right of the decimal point.</span>
In order to round u number to the nearest tenth, you should <span>to the right of the tenths place. Depending on this number you should determine if you will round up or stay the same (if it is bigger than 5 you will round up, if not it will stay the same).
In our case, the number is 15.5 so it is already rounded to the nearest tenth.

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4 years ago
A multiple-choice standard test contains total of 25 questions, each with four answers. Assume that a student just guesses on ea
weqwewe [10]

Answer:

a)  8*88*10⁻⁶ ( 0.00088 %)

b) 0.2137 (21.37%)

Step-by-step explanation:

if the test contains 25 questions and each questions is independent of the others, then the random variable X= answer "x" questions correctly , has a binomial probability distribution. Then

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where

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then

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where F(x) is the cumulative binomial probability distribution- Then from tables

P(x<5)= F(5)= 0.2137 (21.37%)

7 0
4 years ago
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Answer:

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Step-by-step explanation:

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ivann1987 [24]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
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