All categories

2 years ago

If you dig a 6 ft hole how deep is that hole

Mathematics

1 answer:

7nadin3 [17]2 years ago

7 0

Answer:

about 20 ft

Step-by-step explanation:

You might be interested in

Prove that if r is any rational number, then 3r2 − 2r + 4 is rational. The following properties may be used in your proof. Prope

ziro4ka [17]

Given:

Expression is

$3r^2-2r+4$

To prove:

If r is any rational number, then $3r^2-2r+4$ is rational.

Step-by-step explanation:

Property 1: Every integer is a rational number. It is Theorem 4.3.1.

Property 2: The sum of any two rational numbers is rational. It is Theorem 4.3.2.

Property 3: The product of any two rational numbers is rational. It is Exercise 15 in Section 4.3.

Let r be any rational number.

We have,

$3r^2-2r+4$

It can be written as

$3(r\times r)-2r+4$

Now,

3, -2 and 4 are rational numbers by property 1.

$r^2=r\times r$ is rational by Property 3.

$3r^2\text{ and }-2r$ are rational by Property 3.

$3r^2+(-2r)+4$ is rational by property 2.

So, $3r^2-2r+4$ is rational.

Hence proved.

6 0

3 years ago

Triangles A B C and E D C are shown. Triangle A B C is rotated about point C to form triangle E D C. Which rigid transformation

fiasKO [112]

Answer:

a rotation about point C

Step-by-step explanation:

I just took the test and I got it right

thank me with a like :P

5 0

3 years ago

Read 2 more answers

If n lines are drawn in a plane, how many regions do they separate the plane into? induction

grandymaker [24]

Hello,

Let's assume i the number of lines,
u(i) the number of regions:

$u_0=1\\\\
u_1=2=1+1=1+u_0\\\\
u_2=4=2+u_1\\\\
u_3=7=3+u_2\\\\
u_4=11=4+u_3\\\\
u_5=16=5+u_4\\\\
...\\\\
\boxed{u_{n+1}=(n+1)+u_{n}}\\\\

u_{n+1}=(n+1)+n+(n-1)+...+1+u_0\\\\

\boxed{u_{n+1}= \dfrac{(n+1)*(n+2)}{2}+1 }$

6 0

3 years ago

Please answer! I really need help quick

Murljashka [212]

Every 30 min the tank fills up to 40 gallons

7 0

2 years ago

Omg I already got 2 wrong someone please help

Butoxors [25]

The answer is the first one.

I hope this help c:

8 0

3 years ago