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3 years ago

Please help it'll mean a lot :) <33

Mathematics

1 answer:

gavmur [86]3 years ago

3 0

Your answer is C because 12•10= 12

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A rectangular box has the dimensions shown in the diagram. The volume of the box is given by the function V(x) = x3 – 4x, where

marta [7]

Answer:

$Height =3$

Step-by-step explanation:

Given

$Length = x + 2$

$Width = x - 2$

$Height = x$

$Volume = 15$

Required

Find the height

The volume is calculated as thus:

$Volume = Length * Width * Height$

This gives

$15 = (x + 2) * (x - 2) * x$

Apply difference of two squares

$15 =(x^2 - 4 ) * x$

$15 = x^3 - 4x$

Subtract 15 from both sides

$x^3 - 4x - 15 = 0$

Using a calculator to factorize, we have:

$(x-3)(x^2+3x+5) = 0$

Split

$x - 3 = 0$ or $x^2 + 3x + 5 = 0$

$x = 3$ or $x^2 + 3x + 5 = 0$

x has complex roots for $x^2 + 3x + 5 = 0$

Hence:

$x = 3$

Recall that:

$Height = x$

$Height =3$

3 0

3 years ago

Omg please help me ASAP I reallly need my 100 backkkkkkkk

serg [7]

19, cuz 4x19 is 76 and 72<76

5 0

3 years ago

Read 2 more answers

Translate the following statement into a mathematical equation:

Karolina [17]

Its the second one: 5n-3=12

5 0

4 years ago

Saira is using the formula for the area of a circle to determine the value of .

klio [65]

For this problem, we just have to use the values we're given to calculate the approximate value of pi.

The formula presented is

$\pi=Ar^{-2}$

When you have a negative exponent, we can use the following property

$a^{-b}=\frac{1}{a^b}$

Using this property, our problem turns out to be

$\pi=\frac{A}{r^2}$

Now, we just need to plug the given values on this equation

$\pi=\frac{50.265}{4^2}=3.1415625\approx3.142$

The approximated value for pi is 3.142.

5 0

1 year ago

What is value of X+8 Enter your answer in the box 2x-5 B 10 14 Plz help

Vikentia [17]

Answer:

not 100% but i think x may be 23.5

Step-by-step explanation:

6 0

3 years ago

Please help it'll mean a lot :) <33​

Please help it'll mean a lot :) <33