Triangles= 180°
Add the 3 angles to equal 180°
17x + (10x - 5) + 50= 180
combine like terms
27x + 45= 180
subtract 45 from both sides
27x= 135
divide both sides by 27
x= 5
ANSWER: x= 5
Hope this helps! :)
Use a calculator it's not hard
Thats easy.......... 2 1/6
9514 1404 393
Answer:
29) 1/5
30) independent; 64/225 ≈ 0.284
Step-by-step explanation:
In general, a "spinner" is considered to be a (mathematically ideal) device that returns one of the values with which it is marked, with a probability according to the area of the sector in which the mark resides. Usually, sectors are presumed to have equal areas. The result of one spin is generally considered to be independent of the result from any other spin. In the real world, an operator familiar with a given spinner can often ensure that the results do <em>not</em> have equal probability and are <em>not</em> independent. We ignore that possibility in math problems.
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29) Of the numbers 1 to 15, there are three numbers less than 4. The probability of spinning one of them is 3/15 = 1/5.
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30a) We have defined our spinner so that the events are independent. (See above.)
30b) In the set of numbers 1 to 15, 8 are odd and 7 are even. The probability of getting an odd number on any spin is 8/15. Because the results of successive spins are independent, the probability of any given sequence is the product of the probabilities of the numbers in that sequence.
P(2 odd) = P(odd)×P(odd) = (8/15)(8/15) = 64/225 ≈ 0.284
Answer:
Step-by-step explanation:
Before you evaluate an algebraic expression, you need to simplify it. This will make all your calculations much easier. Here are the basic steps to follow to simplify an algebraic expression:
-
Remove parentheses by multiplying factors
(Often, you can use the distributive property to clear parentheses, by multiplying the factors times the terms inside the parentheses)
- Use exponent rules to remove parentheses in terms with exponents
- Combine like terms by adding coefficients
- Combine the constants....
