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3 years ago

I need this help with this problem x^2+4x-5=0 using the “completing the square” method step by step

Mathematics

1 answer:

Hatshy [7]3 years ago

4 0

Answer:

X=125/64

Step-by-step explanation:

x^2+4 x-5=0

x^2+4x=5

4x^3=5

x^3=5/4

x=5^3/4^3

x=125/64

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How tall is a building that casts a 71-ft shadow when the angle of elevation of the sun is 29 degrees.Round to the nearest foot

skad [1K]

Solution

We will draw a diagram to illustrate the information

Using the concept of SOHCAHTOA

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2 years ago

The line of best fit was drawn and the equation for the height (h) and weight (w) was determined to be

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3 years ago

BabaBlast [244]

The expression that represents the volume of the composite figure is $\pi (5^{2})(13) + \frac{1}{3} \pi (5^{2})(12)$ . The correct option is the third option $\pi (5^{2})(13) + \frac{1}{3} \pi (5^{2})(12)$

<h3>Calculating Volume </h3>

From the question, we are to determine the expression that represents the volume of the composite figure

The composite figure consist of a cylinder and a cone

∴ Volume of the composite figure = Volume of the cylinder + Volume of the cone

Volume of a cylinder = $\pi r^{2} h$

Where r is the radius

and h is the height of the cylinder

Volume of a cone = $\frac{1}{3} \pi r^{2} h$

Where r is the radius

and h is the height of the cone

Consider the composite figure

For the cylinder part

r = 5

h = 13

For the cone part

r = 5

h = 25 - 13 = 12

Thus,

Volume of the composite figure = $\pi (5^{2})(13) + \frac{1}{3} \pi (5^{2})(12)$

Hence, the expression that represents the volume of the composite figure is $\pi (5^{2})(13) + \frac{1}{3} \pi (5^{2})(12)$ . The correct option is the third option $\pi (5^{2})(13) + \frac{1}{3} \pi (5^{2})(12)$

Learn more on Calculating volume here: brainly.com/question/16703501

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2 years ago

What is the vertex of the graph of f(x) = x2 + 4x + 6?

ICE Princess25 [194]

Answer:

(-2,2)

Step-by-step explanation:

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4 years ago

The diameter of a round dinner plate is 10 inches. What's the area of the plate?

topjm [15]

A= pi times r*r so if you are using 3.14 as pi the answer is 78.5 because 5x5=25
25x3.14=78.5

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3 years ago