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xeze [42]
2 years ago
15

Solve for x in the triangle

Mathematics
1 answer:
scZoUnD [109]2 years ago
7 0
Answer: 69
explanation: right angles equal to 90 degrees, so 90-21= 69
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A<br> B<br> C<br> D<br> Help me out
aleksklad [387]

Answer:

2x^2 + 3/2x -5

Step-by-step explanation:

f(x) = x/2 -2

g(x) = 2x^2 +x -3

f(x)+ g(x) =  x/2 -2+ 2x^2 +x -3

Combine like terms

             = 2x^2 + 3/2x -5

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2 years ago
HEY GUYS I NEED HELP LIKE REALLY BAD I HAVE A DBA( test) WHATS EVERYTHING I NEED TO KNOW ABOUT Exponential Functions PLZZZZ HELP
Angelina_Jolie [31]

Answer:

An exponential function can describe growth or decay

It gets rapidly smaller as x increases, as illustrated by its graph. In the exponential growth of f(x), the function doubles every time you add one to its input x.

Step-by-step explanation:

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2 years ago
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The graph of the function showing the path of a soccer ball thrown by a goalie in a video game, f(x) = –0.05x2 + 2.5x + 5.2, is
Tju [1.3M]

Answer:

The correct option is 4.

Step-by-step explanation:

The given function is

f(x)=-0.05x^2+2.5x+5.2

Where f(x) is height of the ball and x is the distance.

It is a polynomial function with degree 2. All polynomial functions are defined for all real numbers, therefore the mathematical domain of the function is all real numbers.

-\infty

Factorize the given function.

f(x)=-0.05(x^2-50x-104)

f(x)=-0.05(x^2-50x-104)

f(x)=-0.05(x^2-52x+2x-104)

f(x)=-0.05(x(x-52)+2(x-52))

f(x) = -0.05 (x - 52) (x + 2)

Put f(x)=0 to find the x intercepts.

0 = -0.05 (x - 52) (x + 2)

Equate each factor equal to 0.

x=52,-2

Therefore at x=52 and -2, the graph of f(x) intersects x-axis. Before x=-2 and after x=52 the values of f(x) is negative. Height cannot be negative, therefore reasonable domain is lie between -2 to 52.

Distance cannot be negative, therefore the reasonable domain must be positive.

0\leq x\leq 52

Therefore the reasonable domain is 0\leq x\leq 52 and option 4 is correct.

6 0
2 years ago
Which of the following is a solution of x2 + 2x + 4?
scoray [572]

Answer:8x

Step-by-step explanation:

2++2=4 add x up 4 = 8x

3 0
2 years ago
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40 is what percent of 160?
mash [69]

Answer:

25

Step-by-step explanation:

percentage calculator 40 is what percent of 160=25;)

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