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3 years ago

Does anyone know the answer to this?

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

6 0

Answer:

1,4 and 1,0

Step-by-step explanation: if the x is the same then it is not a function.

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the volume of the a sphere whoes diameter is 18 cm is cubic cm . if it's diameter were reduced by half, it's volume would be of

FrozenT [24]

Answer:

The new volume is 8 times smaller than the original volume

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z-----> the scale factor

x ----> the volume of the reduced sphere

y ----> the volume of the original sphere

$z^{3}=\frac{x}{y}$

we have

$z=1/2$ ----> scale factor

substitute

$(1/2)^{3}=\frac{x}{y}$

$(1/8)=\frac{x}{y}$

$x=\frac{y}{8}$

therefore

The new volume is 8 times smaller than the original volume

Verify

The volume of the original sphere is

$r=18/2=9\ cm$ ---> the radius is half the diameter

$V=\frac{4}{3}\pi (9)^{3}=972\pi \ cm^{3}$

the volume of the reduced sphere is

$r=9/2=4.5\ cm$ ---> the radius is half the diameter

$V=\frac{4}{3}\pi (4.5)^{3}=121.5\pi \ cm^{3}$

Divide the volumes

$972\pi \ cm^{3}/121.5\pi \ cm^{3}=8$

4 0

3 years ago

The expression log8512 = 3 in exponential form is 38 = 512.

svet-max [94.6K]

$\large\begin{array}{I} \mathtt{ log_8~512=3 } \end{array}$

$\large\begin{array}{I} \mathtt{ 3^8 = 512 } \end{array}$

3 0

3 years ago

In the figure, BE||CD. Solve for x. Show your work.

marin [14]

Answer:

Answer is x = 15

Answer is given below with explanations.

Step-by-step explanation:

$in \: the \: figure \: BE || CD \\ by \: thales \: theorem \\ \frac{AE}{ED} = \frac{AB}{BC} \\ on \: substituting \: the \: values \: from \: the \: figure \\ \frac{9}{6} = \frac{x}{10} \\ \frac{3}{2} = \frac{x}{10} \\ x = \frac{3 \times 10}{2} \\ x = \frac{30}{2} \\ x =15 \\$

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION.

3 0

2 years ago

Helppppppppp plzzzzz

Shkiper50 [21]

Answer: 4

Step-by-step explanation:

so you basically make the + sign into a - sign as when there is a + and - sign next to each other it will always change into a - sign so once you do that it will look like this

11+(-7)

11-7

8 0

3 years ago

What is the mean of 18 16 -14 -15 8 18 7 11 -13

exis [7]

here ur answer its 6

can i have da crown

have a goed day

3 0

3 years ago

Read 2 more answers