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3 years ago

If 4x^2 - 100 = 0 then the roots of the equation are

2 answers:

8 0

4x² - 100 = 0
<u>     + 100 + 100</u>
   <u> 4x²</u> = <u>100</u>
      4 4
   x² = 25
      x = <u>+</u>5
4(5)² - 100 = 0
4(25) - 100 = 0
100 - 100 = 0
   0 = 0

4(-5)² - 100 = 0
4(25) - 100 = 0
   100 - 100 = 0
      0 = 0

The roots of the equation is positive or negative 5.

Alex17521 [72]3 years ago

6 0

4x^2-100=0
4x^2=100
x^2=100/4
x^2=-25
x=5 or x=-5

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What is the area of the shaded part of the figure if =14

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The area of the shaded part is: 42.14 ft² .

<h3>Area of Square</h3>

Area = s²

<h3>Area of Quarter Circle </h3>

Area = 1/4πr²

Thus:

Area of the shaded part of the figure = area of square - area of quarter circle

Area of shaded part = s² - 1/4πr²

s = 14 ft

r = 14 ft

Substitute

Area of shaded part = 14² - 1/4(3.14)(14²)

= 42.14 ft²

Therefore, the area of the shaded part is: 42.14 ft² .

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brainly.com/question/813881

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2 years ago

Evaluate the following rational equations below, and identify which rational equation is transformable to a quadratic equation.

ladessa [460]

Answer:

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Step-by-step explanation:

<u>It looks like</u>

(m + 7)/9 = 18/4m

<u>Cross-multiplication:</u>

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Here is the quadratic equation

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3 years ago

Examine the expanded form.<br><br> a ∙ a ∙ a ∙ a ∙ a ∙ a ∙ a

Juliette [100K]

Answer:

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4 years ago

12 yellow balls and 9 red balls are placed in an urn. Two balls are then drawn in succession without replacement. What is the pr

denis23 [38]

Answer:

$\frac{9}{35}$

Step-by-step explanation:

When the first draw is done there are 9 red balls in a sample size of 21. So there probability of drawing a red ball will be $\frac{9}{21}$

When the second draw is done, there will be 12 yellow balls in a sample size of 20 since the first ball will not have been replaced into the bag. So the chance of someone drawing the second ball in the second draw is $\frac{12}{20}$

The probability of them happening in this order is the product of both probabilities:

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3 years ago

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Answer:

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Step-by-step explanation:

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4 years ago