Simplify fully 9(x+7)(x+7)/3(x-1)(x+7)

Mathematics

1 answer:

Marizza181 [45]2 years ago

3 0

Answer:

60x

Step-by-step explanation:

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HELPPPPP PLEASEEEEE!!!

Pepsi [2]

Answer:

The height of right circular cone is h = 15.416 cm

Step-by-step explanation:

The formula used to calculate lateral surface area of right circular cone is: $s=\pi r\sqrt{r^2+h^2}$

where r is radius and h is height.

We are given:

Lateral surface area s = 236.64 cm²

Radius r = 4.75 cm

We need to find height of right circular cone.

Putting values in the formula and finding height:

$s=\pi r\sqrt{r^2+h^2}\\236.64=3.14(4.75)\sqrt{(3.75)^2+h^2} \\236.64=14.915\sqrt{(3.75)^2+h^2} \\\frac{236.64}{14.915}=\sqrt{14.0625+h^2} \\15.866=\sqrt{14.0625+h^2} \\Switching\:sides\:\\\sqrt{14.0625+h^2} =15.866\\Taking\:square\:on\:both\:sides\\(\sqrt{14.0625+h^2})^2 =(15.866)^2\\14.0625+h^2=251.729\\h^2=251.729-14.0625\\h^2=237.6665\\Taking\:square\:root\:on\:both\:sides\\\sqrt{h^2}=\sqrt{237.6665} \\h=15.416$

So, the height of right circular cone is h = 15.416 cm

4 0

2 years ago

What is the ultimate goal when solving equations? What do you want your final answer to look like?

STALIN [3.7K]

Answer:

$\huge\boxed{\text{To get x on one side of the equation:} \ \ x = ...}$

Step-by-step explanation:

When we solve for an equation, our goal is to find the value of the variable. Any variable can be used, but for the time being let’s assume we use $x$ .

We can algebraeically solve equations until we get the value of x - in which we will have x equal to something.

Say we have the equation $5x+5=20$ . Our goal is to find the value of $x$ . <u>We can do this by getting x isolated on one side so we have something equal to x</u>.