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Julli [10]
3 years ago
6

Sophia scored 92 percent in a math test. If the test had 50 questions, how many did she get right?

Mathematics
1 answer:
USPshnik [31]3 years ago
6 0

Answer:

Sophia got 46 questions right.

Step-by-step explanation:

Heres why:

In order to find how much she got right, we put 92% over 100 and make it a fraction so that would be 92/100.

Now, she had 50 questions. So, we will put that over 1. So that would look like this: 50/1.

Finally, we multiply: 92/100 times 50/1.

This equals 4600/100 which equals 46

SO: Sophia got 46 questions right! Hope this helps and plz mark brainliest if you want to!  :)

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alexgriva [62]

Answer:

its a semiregular polyhedron and it is an octagonal prism

Step-by-step explanation:

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3 years ago
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A skateboard is marked 20% off. If the board originally cost $45.00, what is the sale price?
mr Goodwill [35]

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$36.00

Step-by-step explanation:

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Find the domain of the function algebraically:<br><br> <img src="https://tex.z-dn.net/?f=R%28x%29%3D%5Cfrac%7Bx%7D%7Bx%5E%7B2%7D
BigorU [14]

The domain of the function is all real numbers except 2 and -1

Step-by-step explanation:

Domain is the set of inputs of a function on which the function is defined.

Given function is:

R(x) = \frac{x}{x^2-x-2}

In case of a function involving fraction, the function is undefined if the denominator is zero so in order to find the domain of the function algebraically , we have to find the values on which the function will be undefined

x^2-x-2 = 0\\x^2-2x+x-2 = 0\\x(x-2)+1(x-2) = 0\\(x+1)(x-2) = 0\\x+1 = 0 => x=-1\\x-2=0 = > x=2

The function will be undefined on x=-1 and x=2

So,

The domain of the function is all real numbers except 2 and -1

Keywords: Domain, functions

Learn more about domain and functions at:

  • brainly.com/question/2150928
  • brainly.com/question/2154850

#LearnwithBrainly

7 0
4 years ago
What is the equation of the line shown in the graph drag &amp; drop the expressions ro write the equation of the line in slope i
vredina [299]

Answer:

y = 2(x + 3) +  (-2) is the  required equation.

Step-by-step explanation:

Here the given points are A( -1,2) and B(-3-2)

Now, slope of the equation = \frac{y_2 - y_1}{x_2 - x_1}  = \frac{-2 -2}{-3-(-1)}   = \frac{-4}{-2}   = 2

Hence, the slope of the equation is m = 2

Now, by POINT SLOPE FORMULA:

The equation of a line with slope m and point (x0, y0) is given as

(y - y0) = m (x -x0)

So, here the equation of line with (-3, -2) is

y - (-2) = 2 (x - (-3))

or, y + 2 = 2(x + 3)

⇒  y = 2(x + 3) +  (-2) is the  required equation.

3 0
4 years ago
What are the solution(s) of –x2 + 2x + 3 = x2 – 2x + 3?
Leviafan [203]
-x^2+2x+3=x^2-2x+3  add x^2 to both sides

2x+3=2x^2-2x+3  subtract 2x from both sides

3=2x^2-4x+3  subtract 3 from both sides

2x^2-4x=0  factor

2x(x-2)=0

So x=0 and 2
3 0
3 years ago
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