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3 years ago

Help!!!!!! Please thanks

Mathematics

1 answer:

iVinArrow [24]3 years ago

7 0

As you can see in the image below, the answer is graph C.

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Find the volume of a sphere with a diameter of 8cm

12345 [234]

Answer:

V = 267.95

Step-by-step explanation:

Volume of a Sphere:

V = 4/3πr³

r = d/2

r = 4

Work:

V = 4/3πr³

V = 4/3(3.14)(4³)

V = 4/3(3.14)(64)

V = 267.95

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3 years ago

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3x(x + 3) = 8 Solve the equation

adoni [48]

Answer:

if your simplifying it is 3x^2 + 9x

Step-by-step explanation:

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3 years ago

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Which set of statements explains how to plot a point at the location

Komok [63]

Answer:

last one or d

Step-by-step explanation:

Lets test these statements. 1 is incorrect. 2 is incorrect 3 is incorrect 4 is correct.

The answer is the last one

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3 years ago

Show all work to solve the equation for x. If a solution is extraneous, be sure to identify it in your final answer.

IRISSAK [1]

Answer:

There is one extraneous solution at $x = 4$

The only solution is $x=7$

Step-by-step explanation:

Given:

The equation to solve is given as:

$\sqrt{x-3}+5=x$

In order to solve, we will first isolate the radical part.

Adding -5 on both the sides, we get:

$\sqrt{x-3}+5-5=x-5\\\sqrt{x-3}=x-5$

Now, squaring both the sides, we get:

$(\sqrt{x-3})^2=(x-5)^2\\\\x-3=x^2+25-10x\\\\x^2-10x-x+25+3=0\\\\x^2-11x+28=0\\\\(x-4)(x-7)=0\\\\x=4\ or\ x=7$

Now, let us check whether the calculated values satisfy the equations or not.

Plug in 4 and 7 for 'x' and check the value of the equation.

At $x=4$ ,

$\sqrt{4-3}+5=4\\\sqrt1+5=4\\1+5=4\\6=4$

But, 6 is not equal to 4 and hence 4 is not a solution to the given equation. It is an extraneous solution for the given equation.

Now, at $x=7$

$\sqrt{7-3}+5=7\\\sqrt4+5=7\\2+5=7\\7=7(True)$

Therefore, $x=7$ is a solution to the equation.

Hence, there is one extraneous solution at $x = 4$

The only solution is $x=7$

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4 years ago

The fat content for seven different sandwiches at a restaurant is 42, 61, 13, 9, 12, 42, and 62. Find the mean, median and mode

cestrela7 [59]

The mode of the given data set is 42, becuase mode is define as the number with the must number of responses or result.
The mean of the given data set is 26.89, because it is define as the average of the data set
The median of the data set is 42, it is define as the middle figure when the data set is already arrange ascending or descending.

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3 years ago