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3 years ago

how do you know if your anwser in absolut value is extranious after you plug it back into the equation?

1 answer:

4 0

If an number is an absolute value, it means that the number will be positive. You would plug and check the same way you would for any other equation and it a solution is considered extraneous if the equation is not equal

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What is the volume of a cone with diameter 21 m and height 4 m?

natima [27]

For this case we have by definition, that the volume of a cone is given by:

$V = \frac {1} {3} * \pi * r ^ 2 * h$

Where:

A: It is the cone radius

h: It's the height

They tell us that the diameter is 21 m, then the radius is half the diameter, that is: 10.5m. The height is 4m. Substituting the data:

$V = \frac {1} {3} * \pi * (10.5) ^ 2 * 4\\V = \frac {1} {3} * \pi * 110.25 * 4\\V = 147 \pi$ .

Finally, the volume of the cube is $147 \pi \ m ^ 3$

ANswer:

Option B

3 0

3 years ago

Andrew micheal anderson istg if u dont answer my s n a p-

Vera_Pavlovna [14]

Step-by-step explanation:

He won't answer you.

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3 0

2 years ago

Read 2 more answers

olga nikolaevna [1]

Answer:

Fraction of the original board left = $\frac{2}{15}$

Step-by-step explanation:

Let the length of the board is = l feet

Marty saws off $\frac{1}{5}$ of a wooden board.

Length of the board left = l - $(\frac{1}{5})l$

= $(\frac{4}{5})l$ feet

He saws off $\frac{3}{4}th$ of the remaining board,

Board left = $(\frac{4}{5})l-[(\frac{4}{5})l\times (\frac{3}{4})]$

= $\frac{4}{5}l-\frac{3}{5}l$

= $\frac{1}{5}l$ feet

He finally saws off $\frac{1}{3}$ rd of the remaining board.

Board left = $\frac{1}{5}l-[\frac{1}{5}\times \frac{1}{3}]l$

= $(\frac{1}{5}-\frac{1}{15})l$

= $\frac{2}{15}l$ feet

Fraction of the original board left = $\frac{\frac{2}{15}l}{l}$

= $\frac{2}{15}$

6 0

3 years ago

Turn the sentence into an expression please

PilotLPTM [1.2K]

Answer:

6 * (n^2 + 4)

3 0

2 years ago

Which symbol, >, <, or = will complete the statement

trapecia [35]

Answer:

Step-by-step explanation:

-4.2 + 1.5 = -2.7 and -5.4 + 2.1 = -3.3

-2.7 is less than -3.3

7 0

3 years ago

Read 2 more answers