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kap26 [50]
3 years ago
8

Find the values of the variables ( I have five more of these if you will help me pls)

Mathematics
1 answer:
lord [1]3 years ago
5 0
<span>The angles of the figure are complementary, that is, the sum between them is equal to 90º.

Solving:
54º + 4xº = 90º
4xº = 90 - 54º
4xº = 36º
</span>x =  \frac{36^0}{4^0}
\boxed{\boxed{x = 9^0}}\end{array}}\qquad\quad\checkmark
<span>
We have:
54º + 4.xº = 90º
54º + 4.(9º) = 90º
54º + 36º = 90º
90º = 90º (TRUE)

Answer:
</span><span>The value of the variable is 9º</span>
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Read 2 more answers
[(4x + 15) / 5x)] = 1/2
Arada [10]
One way in which to approach this problem would be to treat it as an equation of ratios and to cross multiply:

<span>[(4x + 15) / 5x)] = 1/2  could be written as:

4x + 15        1
----------- =  ---
     5x           2

Then 8x + 30 = 5x

3x = -30,  and so     x = -10 (answer).  Be certain to check this answer through substitution!

</span>
6 0
3 years ago
A waether forecast predicts a 30% chance of rain for each of the next 3 days. Describe a way to stimulate the chance that it wil
DerKrebs [107]
Using a binomial distribution considering there's a 30% chance it will rain on any of the three days: 

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<span>The probability of it raining on 1 day is (3)(0.3)(0.7)(0.7) = 44.1%. </span>
<span>The probability of it raining on 2 days is (3)(0.3)(0.3)(0.7) = 18.9%. </span>
<span>The probability of it raining on 3 days is (1)(0.3)(0.3)(0.3) = 2.7%. </span>

<span>There's a 65.7% chance that it will rain at least once over the three-day period.</span>
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3 years ago
which of the following algebraic expression can be used to express the statement three less than z squared
frez [133]
z^{2}-3
3 0
3 years ago
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