Ask question

Ask question

All categories

3 years ago

14

Drag and drop an answer to each box to correctly explain the derivation of the formula for the volume of a pyramid.

1 answer:

romanna [79]3 years ago

8 0

Answer:

1 to 3 and V= 1/2 Bh

Step-by-step explanation:

the pyramid is like a triangle there is three sides. There is only one way of the whole pyramid you can cut.

You might be interested in

Rearrange the formula to make x the subject:<br> A = 1/2xy

Maslowich

Answer:

x = $\frac{2A}{y}$

Step-by-step explanation:

Given

A = $\frac{1}{2}$ xy

Multiply both sides by 2 to clear the fraction

2A = xy ( divide both sides by y )

$\frac{2A}{y}$ = x

3 0

3 years ago

-x^2+4x-8 <br>axis of symmerty

V125BC [204]

Answer:

$\boxed {\boxed {\sf x=2}}$

Step-by-step explanation:

The axis of symmetry can be calculated using the formula:

$x=\frac{-b}{2a}$

First we must determine a and b from the quadratic: $-x^2+4x-8$ . This is in standard form, with the highest power first in descending order.

Standard form is also: $ax^2+bx+c$

If we compare this to the quadratic given, we can conclude that:

$a= -1 \\b= 4 \\c= -8$

Substitute the values for a and b into the formula.

$x= \frac{-(4)}{2(-1)}$

Multiply in the denominator.

$x=\frac {-4}{-2}$

Divide.

$x=2$

This can also be determined from the graph. It is the x-coordinate of the vertex or the maximum/minimum. It divides the quadratic into 2 symmetrical halves.

8 0

3 years ago

steposvetlana [31]

I hope this helps you

8m+7m+4n-2n

15m+2n

4 0

3 years ago

Read 2 more answers

Need help on this math problem

Alenkasestr [34]

Answer:

<BCF is the other alternate exterior angle.

Step-by-step explanation:

If you can, let me know if this is correct. :)

6 0

3 years ago

HELP ASAP PLEASE!!! 20 POINTS!!

Kobotan [32]

Answer: $S_{12}=399.90$

Step-by-step explanation:

You know that the formula to find the sum of a finite geometric series is:

$S_n=\frac{a_1(1-r^n)}{1-r}$

Where $n$ is the number of terms, $a_1$ is the first term and $r$ is the common ratio ( $r\neq 1$ ).

The steps to find the sum of the first 12 terms of the given geometric serie, are:

1. Find the common ratio "r". By definition:

$r=\frac{a_2}{a_1}$

Then:

$r=\frac{100}{200}\\\\r=\frac{1}{2}$

2. Finally, knowing that:

$a_1=200\\\\n=12$

You must substitute values into the formula.

Then you get:

$S_{12}=\frac{200(1-(\frac{1}{2})^{12})}{1-\frac{1}{2}}\\\\S_{12}=399.90$

6 0

3 years ago