How to solve quadratic equations by completing the square problems?

Mathematics

1 answer:

babunello [35]4 years ago

8 0

You don't solve a quadratic equation using completing the square

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A bag of marbles contains 6 blue marbles, 2 yellow marbles, 4 red marbles, and 1 green marble. What is the probability of reachi

Mashutka [201]

Answer:StartFraction 2 over 13 End fraction

Step-by-step explanation:

Probability = number of possible outcomes/ total number of outcomes

P (Yellow marble) = 2/ 13

6 0

3 years ago

What is the value of x ???

k0ka [10]

Answer:

D. $2\sqrt {133}$

Step-by-step explanation:

${x}^{2} = {18}^{2} + ( {12}^{2} + {8}^{2} ) \\ \\ {x}^{2} = 324 + (144 + 64) \\ \\ {x}^{2} = 324 + 204 \\ \\ {x}^{2} = 528 \\ \\ x = \sqrt{532} \\ \\ x = \sqrt{4\times 133} \\ \\ x = 2\sqrt {133}$

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3 years ago

The variable used to predict changes in the values of another value is called the response variable.

Sholpan [36]

I think the statement given above is false. The variable used to predict changes in the values of another value is not called the response variable. The variable used to predict another variable is called the independent, <span>predictor or </span><span>explanatory variable. Hope this answers the question.</span>

7 0

3 years ago

Find the surface area of the figure below. Round to the nearest tenth if necessary.

Contact [7]

Answer:

173.4 cm^2

Step-by-step explanation:

Surface area of the cone=pi*r*l+pi*r^2=pi*(4)*(9.8+4)=173.4 cm^2

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3 years ago

What is the value of sin20sin30sin40sin80.

Ilya [14]

1,-1,1,-1 is your answer

3 0

3 years ago