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Stella [2.4K]
3 years ago
13

What is the solution for a + 5 and two-thirds = 9

Mathematics
1 answer:
erastova [34]3 years ago
3 0

Answer:

8.5

Step-by-step explanation:

Do you mean "(a+5)2/3

(a + 5) 2/3 = 9

a + 5 = 13.5

a=8.5

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nalin [4]

In this problem, you must use SohCahToa which basically means:

Sin - opposite over hypotenuse

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Tangent - Opposite over hypotenuse


So in this picture we have 4 -which is on the opposite side of x - and a 5 -which is the hypotenuse of the triangle. This means we must use sin.

Using a calculator you put in:

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2 years ago
What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.
Debora [2.8K]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
Use the graph to determine the domain and range of the relation, and whether the relation is a function.
Westkost [7]

Answer:

A

Step-by-step explanation:

We can use vertical line test to determine if a relation is a function.

<em>If a vertical line passes the graph at any point only once, then the relation is a function, if there is even 1 line that passes the graph at 2 points, then it is NOT a function.</em>

<em />

The domain is the set of allowed x-values of the function. The range is the set of allowed y-values of the function.

  • Looking at the graph, we see that there are a lot of vertical lines that cuts the graph two times. Suppose x=3, x=4, x= 5 etc. So it is not a function.
  • As for domain, we see that curve swings from x = -8 to x = 8, so the domain is from -8 to 8.
  • As for range, we that the curve stretches all the way from negative infinity to positive infinity, so the range is the set of all real numbers.

Correct answer is A

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3 years ago
To check a solution, you can ____________the solutions into the equations and verify that both equations are true.
kondor19780726 [428]

Answer: To check a solution, you can substitute the solutions into the equations and verify that both equations are true.

Step-by-step explanation:

7 0
2 years ago
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