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3 years ago

HELP PLEASEEE!! THIS IS HARD

Mathematics

2 answers:

motikmotik3 years ago

8 0

Answer: 672m³

Step-by-step explanation:

V= LxWXH

=14 * 8 * 6

=672

Dmitriy789 [7]3 years ago

7 0

Answer:

672

Step-by-step explanation:

To find the volume of a rectangular prism, you multiply each side of the cube. This means that you will multiply any 2 factors such as 8x6 to get 48. Then you multiply 48 by 14, the last factor. 48x14=672 our is proven to be 672. Hope this helps you. Keep in mind it is almost like finding the area of a square but because it is 3D, you multiply 3 factors instead of 2 and the "area" is called volume.

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Read 2 more answers

Code. -3x + 4y = -8 8x - y = 16 Solving systems by substitution

LiRa [457]

Answer:

The solution to the system of equations is $\displaystyle \big(\frac{56}{29}, -\frac{16}{29}\big)$ .

Step-by-step explanation:

We are given a system of equations:

$\displaystyle \left \{ {{-3x+4y=-8} \atop {8x-y=16}} \right.$

We need to solve these by substitution, so we need to solve one equation for a variable and then substitute the value of that variable into the other equation.
After doing this and solving for the opposite variable, we need to insert this into the original equation and solve for the initial variable.
Therefore, to solve one of the equations, we will solve it to put it in slope-intercept form and solve for y. The easier equation to work with is equation two.

$\displaystyle 8x - y = 16\\\\-y = -8x + 16\\\\\frac{-y}{-1}=\frac{-8x+16}{-1}\\\\y = 8x - 16$

Now, we've solved for y. So, we can substitute this into either equation and solve for x.

$\displaystyle -3x + 4(8x -16)=-8\\\\-3x + 32x - 64 = -8\\\\29x - 64 = -8\\\\29x = 56\\\\\frac{29x}{29}=\frac{56}{29}\\\\x = \frac{56}{29}$

Now, we substitute our value for x into one of the original equations and solve for y.

$\displaystyle 8\big(\frac{56}{29}\big)-y=16\\\\-y = 16 - 8\big(\frac{56}{29}\big)\\\\-y=\frac{16}{29}\\\\\frac{-y}{-1}=\frac{\frac{16}{29}}{-1}\\\\y = -\frac{16}{29}$

Therefore, the solution to our system of equations is:

$\displaystyle \big(\frac{56}{29}, -\frac{16}{29}\big)$

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3 years ago

Which of the following describe 86? Select all that apply.

Ber [7]

Answer:

A rational number is any number that can be written as a ratio of two integers (hence the name!). In other words, a number is rational if we can write it as a fraction where the numerator and denominator are both integers. ... Irrational, then, just means all the numbers that aren't rational.

Step-by-step explanation:

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