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galben [10]
3 years ago
12

Write an algebraic expression for each word expressions

Mathematics
1 answer:
dangina [55]3 years ago
4 0
Solving these is quite simple; think of "a number" as a value of either n or x (depending on personal preference) then just find the operations being done based on key words; 1. Sum= addition so it is x+5 2. Decrease= subtraction so it is 11-n 3. Quotient= division so it is -9/y 4. Twice= multiply by two, minus= subtract, so it is 2n-13
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Please answer this question now
Nataly [62]

Answer:

<h2>S = 11.4</h2>

Step-by-step explanation:

To find s we use the cosine rule

That's

s² = SU² + ST² - 2(SU)(ST) cos S

From the question

SU = 5

ST = 13

S = 60°

Substituting the values into the expression we have

s² = 5² + 13² - 2(5)(13) cos 60

s² = 25 + 169 - 130cos 60

s² = 194 - 65

s² = 129

Find the square root of both sides

s= √129

s = 11.357816

We have the final answer as

<h3>s = 11.4 to the nearest tenth</h3>

Hope this helps you

3 0
3 years ago
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Answer:

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Step-by-step explanation:

4+3(12÷3)-7

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