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3 years ago

BRAINLIEST!! 12. How can the figure be cut so that the resulting cross section is a rectangle?

Mathematics

2 answers:

maw [93]3 years ago

7 0

Answer:

vertical

Step-by-step explanation:

just need yo imagine

atroni [7]3 years ago

6 0

Vertical cut.

The sides are rectangles while the top and bottom faces are triangles.

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A triangle has a side lengths of 4cm,3cm, and 4cm. Classify its as acute, obtuse, or right.

DIA [1.3K]

When given 3 triangle sides, to determine if the triangle is acute, right or obtuse:

1) Square all 3 sides.

4, 3, 4,

16, 9, 16

2) Sum the squares of the 2 shortest sides.

16 + 9 = 25

3) Compare this sum to the square of the 3rd side.

25 > 16

if sum > 3rd side² Acute Triangle

So, it is an acute triangle.

Source:
http://www.1728.org/triantest.htm

4 0

4 years ago

Please help and fast

Oksana_A [137]

Answer:

216 in squared

Step-by-step explanation:

using the formula, a cube has six sides so 6 squared is 36 times 6 equals to 216

4 0

3 years ago

What is the inverse of f(x) =1/3x+2

Aleonysh [2.5K]

I believe the answer is

f(x)=3x -6

Hope this helped.

6 0

4 years ago

World population is approximately upper p equals 6.4 left-parenthesis 1.0126 right-parenthesis superscript t, with upper p in bi

Leviafan [203]

Given equation is

$P=6.4(1.0126)^t$

It gives approx world population in billions for t years since 2004.

Answer(a):

Compare with growth formula P=a(b)^t, we get:

growth factor b = 1.0126

We know that if r is the percent rate of growth then

1+r=b

1+r=1.0126

r=0.0126

Hence the yearly percent rate of growth of the world population is 0.0126 or 1.26%.

Answer(b):

To find worlds population in 2004, plug t=0 because year is counted from 2004.

$P=6.4(1.0126)^0 = 6.4*1 = 6.40$

Hence answer is 6.40 billion.

To find worlds population in 2018, plug t=2018-2004=14 because year is counted from 2004.

$P=6.4(1.0126)^{14} = 6.4*1.19160117479 = 7.62624751867$

Hence answer is approx 7.63 billion.

Answer(c):

Average rate of change of the world population between 2004 and 2018 is given by:

$\frac{P\left(Year_{2018}\right)-P\left(year_{2004}\right)}{2018-2004}$

$=\frac{P\left(14\right)-P\left(0\right)}{14-0}$

$=\frac{7.63-6.40}{14}$

$=0.0878571428571$

Hence answer is approx 0.0878571428571 billion per year.

To convert it into millions, multiply by 1000

So we get 0.0878571428571*1000 = 87.8571428571

Which is approx 88 to the nearest integer

Hence final answer is approx 88 millions per year.

7 0

4 years ago

So my math teacher doesn't give us any steps to know how to do the equations. She just tells us the unit, then the vocab plus th

Lemur [1.5K]

I personally understand what you are saying... everyone has a teacher like that at least once in their schooling.

Doing two-step equations can sometimes be tricky, even if you understand the topic pretty well. All two-step equations are: equations that require two objectives to solve for the variable (That's why it's called a two-step equation).

There are multi-step equations...but let's take one bite at a time.

First, let's establish one simple rule:

Anything you do to one side of the algebraic equation, you must do to the other side for the equation to remain true.

For example:

$2x-4=20$

So, we have this $2x-4$ just chillin' out with the $x$ . When trying to solve for a variable, this is usually not what we want. The $x$ needs to be alone for us to know what $x$ equals.

For the first step of getting $x$ alone, we can add $4$ on each side of the equation to cancel out the $-4$ on the variable's side. Remember to do it on both sides of the equation!

$2x-4=20$ becomes $2x-4+4=20+4$

Did you see what I did there? All I did was basically add $4$ to $2x-4$ and $20$ . The equation remains equal, but using that simple rule, we were able to get one step closer to isolating the $x$ in the equation.

To continue...

$2x-4+4=20+4$

$2x-4+4$ turns into $2x$ (This is because the $-4$ and the $+4$ cancel out.)

Now we have $2x=24$

This next step should look familiar to you (assuming you already know how to solve for one-step equations, I'll keep it short and sweet).

$2x=24$

Now, since $2x$ is the same as saying $2$ times $x$ , we can do the opposite of multiplication...which is division, like so:

$\frac{2x}{2} =\frac{24}{2}$

The $2$ 's will cancel each other out and $\frac{24}{2}$ simplifies to $12$ .

Awesome! Looks like we solved our two-step equation!

In the equation: $2x-4=20$ , $x=12$

Some things to remember:

What ever you do to one side of the equation, you must do to the other.
You want to apply the opposite sign of the number you are trying to cancel out of the equation while isolating the $x$ .
Never make it harder than it needs to be. It is called a two-step equation for a reason, multi-step requires more than two...but wait until you have to work those before you start using fifty different ways to solve the equation.

Hope I was able to help you out! Have a good one, and God bless!

Also, if you are confused about something I answered, or I may be incorrect, feel free to let me know!

4 0

3 years ago