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3 years ago

WILL MARK BRAINLIEST Which expression represents the surface area of the cone?

Mathematics

2 answers:

Vlad1618 [11]3 years ago

7 0

Answer:

The correct answer is third option

π(3)(5) + π3²

Step-by-step explanation:

<u>Points to remember</u>

Surface area of cone = πrl + πr²

Where r is the radius of the cone and l is the slant height of cone

<u>To find the correct answer</u>

Here r = 6/2 = 3 in

l = 5 in

Surface area = πrl + πr²

= π(3)(5) + π3²

The correct answer is third option

π(3)(5) + π3²

Virty [35]3 years ago

6 0

Answer:

Third option

Step-by-step explanation:

By observing the diagram we can see that the diameter of circular base is 6 inches. The diameter will be sued to find the radius.

r = 6/2 = 3 inches

We can also see from the diagram that lateral height denoted by l is 5 in.

We know that the formula for surface area of a cone is given by:

$SA = \pi rl+\pi r^2\\Putting\ the\ values\ of\ r\ and \l\\SA = \pi (3)(5)+\pi (3)^2$

Comparing it with the options we get that the third option is correct ..

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Mr. Gutierrez had $100 to purchase candy for his students that completed their work. He

Sidana [21]

Answer:

$21.50

Step-by-step explanation:

Mr. Gutierrez had $100 to purchase candy for his students that completed their work.

He bought 8 bags of jolly ranchers

Each bag of jolly ranchers cost $3.25.

Hence, the cost of 8 bags of jolly ranchers = 8 × $3.25

= $26

He also bought 25 bags of assorted chocolate and each bag of assorted chocolate cost $2.10.

Hence, the cost of 25 bags of assorted chocolates = 25 × $2.10

= $52.5

Therefore, the amount of money Mr. Gutierrez has left over after these purchases is calculated as:

Total amount - Sum of ( Cost of 8 bags of jolly ranchers + 25 bags of assorted chocolates)

= $100 - ( $26 + $52.5)

= $100 - $78.50

= $21.50

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3 years ago

You need gas for your car, and just as you are approaching where you normally get gas, the radio station announces that the Chea

schepotkina [342]

Answer: Yes

Step-by-step explanation:

Given that:

Distance from present location to CheapGas = 4 miles

Price of gas at CheapGas is $0.37 cheaper

Hence, the decision to make a U-turn back to CheapGas or continue on intended destination will rely on two factors ;

1) The number of gallons of gas to purchase

2) The cost of gas required to return to cheap gas.

If a substantial amount of gas is to be purchased, may be 50, 100 or more gallons, the amount saved by making a turn back to cheapGas and purchase gas at $0.37 cheaper per gallon.

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2 years ago

and a list of numbers the pattern increases by 0.001 as you move to the right if the third number list is 0.0 64 what is the fir

Ksivusya [100]

Answer:

0.062

Step-by-step explanation:

The numbers will decrease by 0.001 as you move the the left, so the list of numbers can be found as ...

3rd number: 0.064

2nd number: 0.064 -0.001 = 0.063

1st number: 0.063 -0.001 = 0.062

7 0

3 years ago

Where is the function increasing?<br> A)1 B)3< X C)-infinity < x < 1<br> D)-infinity

eduard

Answer:

A) $1$

Step-by-step explanation:

Given:

A graph of a function.

When we analyze the given graph, it is of a <em>parabola</em>.

To find:

The interval of values of $x$ where the function is increasing.

Solution:

First of all, let us learn about the meaning of increasing and decreasing functions.

1. A function $y=f(x)$ is known as increasing in an interval $a$ when

Value of y keeps on increasing when we move from the value of x from a to b.

2. A function $y=f(x)$ is known as decreasing in an interval $a$ when

Value of y keeps on decreasing when we move from the value of x from a to b.

On analyzing the given graph , we can see that the graph is decreasing on the interval: $-\infty$

and is increasing on the interval: $1$

When we choose from the options,

The correct answer is option A) $1$

6 0

3 years ago

What is the equation of a line perpendicularto y=-2/5x-1 that passes through(2,-8)

Andrews [41]

<h2>Answer: y = ⁵/₂ x - 13 OR y + 8 = ⁵/₂ x - 5 </h2>

<h3>Step-by-step explanation:</h3>

<u>Find the slope of the perpendicular line</u>

When two lines are perpendicular, the product of their slopes is -1. This means that the slopes are <em>negative-reciprocal</em>s of each other.

⇒ if the slope of this line = - ²/₅

then the slope of the perpendicular line (m) = ⁵/₂

<u>Determine the equation</u>

We can now use the point-slope form (y - y₁) = m(x - x₁)) to write the equation for this line:

⇒ y - (-8) = ⁵/₂ (x - 2)

∴ y + 8 = ⁵/₂ (x - 2)

We can also write the equation in the slope-intercept form by making y the subject of the equation and expanding the bracket to simplify:

since y + 8 = ⁵/₂ (x - 2)

y = ⁵/₂ x - 13

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3 years ago