4 years ago

If you are smart put this emojiif u not smart put this emoji ok thanks

Mathematics

2 answers:

yulyashka [42]4 years ago

4 0

i aint that smart oof

PtichkaEL [24]4 years ago

3 0

Yesssss that is right

You might be interested in

A right cone has radius 9cm and slant height 12cm. The radius and slant height are both multiplied by 2/3. Which of the followin

Olegator [25]

Answer:

<em>The surface area is multiplied by 4/9.</em>

Step-by-step explanation:

<u>Surface Area of a Cone</u>

Being r the radius and l the slant height of a cone, then its surface area is

$SA=\pi r^2+\pi r l$

Now let's think both the radius and the slant height are multiplied by the same factor k, i.e.

r'=kr

l'=kl

The new surface area is

$SA'=\pi r'^2+\pi r' l'=\pi (kr)^2+\pi \cdot kr\cdot kl=k^2\pi r^2+k^2\pi rl$

$SA'=k^2(\pi r^2+\pi rl)=k^2\cdot SA$

The new surface area is the $k ^2$ times original SA. Since k=2/3, then

$SA'=4/9\ SA$

The surface area is multiplied by 4/9.

6 0

3 years ago

Solve<br>3/x + 5/x-2=1<br>x=__ x=__

guajiro [1.7K]

The first x= 2 2/3 and the second x= 2.6

8 0

3 years ago

Choose the missing step in the given solution to the inequality −x − 10 > 14 + 2x.

uranmaximum [27]

Missing step : -3x > 24 <== to get that, 10 was added to both sides

6 0

3 years ago

Read 2 more answers

What is the standard form of this function?

vovikov84 [41]

Answer:

Step-by-step explanation:

(x-2)(x-2)+6

FOIL

4 0

3 years ago

Cooling towers are used to remove or expel heat from a process. A cooling tower's walls are modeled by x squared over 400 minus

Firdavs [7]

The width of the cooling tower at the base of the structure is 40 meters.

<h3>Width of the cooling tower </h3>

Given equation

x²/400 -(y-90)²/1600=1

Solving for the width

Cooling tower width =2√400

Cooling tower width=2×20

Cooling tower width=40 meters

Therefore the correct option is D. 40 meters.

Learn more about width here:brainly.com/question/25855344

brainly.com/question/15356328

#SPJ1

8 0

2 years ago