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zheka24 [161]
1 year ago
5

9х2 - 2x – 1 = 0

="2x { }^{2} - 2x - 1 = 0" alt="2x { }^{2} - 2x - 1 = 0" align="absmiddle" class="latex-formula">

Mathematics
1 answer:
skad [1K]1 year ago
7 0

Evaluate the value of x by using the quadratic formula.

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PLEASE HELP ASAP ILL MAKE BRAINLIEST
Arada [10]

Answer:

10 times

Step-by-step explanation:

there are a total of 200 coins

each time he makes a selection the probability of selecting a dime is 40/200 or 1/5

if he makes 50 selections, the probability is 1/5(50) which is 10 times

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3 years ago
Edward buys a bicycle online for 254.75$ if shipping and handling are an additional 24% of the price how much shipping and handi
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Answer:

24% of (254.75 US$) =

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Step-by-step explanation:

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2 years ago
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The sum of two numbers is 67. if one of the numbers is p, express the other number in terms of p
Ierofanga [76]
Since the sum of two numbers is 67
and one number is p
so the other number is (67-p)
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3 years ago
A math class is having a discussion on how to determine if the expressions 4x-x+5 and 8-3x-3 are equivalent using
Mkey [24]

Answer:

  Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are the same, then the two expressions must be equivalent.

Step-by-step explanation:

Both expressions are linear expressions. It takes 2 points to define a line. If the lines defined by each expression go through the same two points, then the expressions are equivalent.

If the expressions have the same value for two different variable values, they are equivalent. (choice D)

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<em>Additional comment</em>

One more point is needed than the degree of the polynomial expression. That is, quadratic (degree 2) expressions will be equivalent if they go through the same 2+1 = 3 points.

6 0
3 years ago
Ben and Alyssa play a game in which they earn the same number of points for each goal and lose the same number of points for eac
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Answer:

Each goal gives 5 points and a penalty costs 7 points.

Step-by-step explanation:

Let a penalty cost = x points

And a goal gives = y points

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Alyssa makes 10 goals and 8 penalties ending the game with (-6) points,

10y - 8x = -6

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Equation (1) multiplied by 2, then subtracted from equation (2),

(5y - 4x) - 2(7y - 2x) = -3 - 2(21)

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Therefore, each goal gives 5 points and a penalty costs 7 points.

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