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Wewaii [24]
3 years ago
14

4x + 6 = -x +1what's x?​

Mathematics
1 answer:
Setler [38]3 years ago
8 0

Answer:

x=-1

Step-by-step explanation:

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Marissa got an 85% on her math quiz. If she got 34 questions correct, know how many questions were on the quiz.
ikadub [295]

<u>Answer:</u> 40

<u>Reasoning:</u> 34/.85= 40

40x.85=34

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I need help as soon as possible
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set the equation up for "Eight less than the square of a number is the same as adding the number and four"
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X^2-8 = x+4 is your answer!
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3 years ago
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.

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3 years ago
What is 4 (x-y) - 3 (x-y) ?
Anettt [7]

Answer: x+y

Step-by-step explanation: 4x-4y-3x-3y

4x-3x is x

4y-3y is y

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