Circle the letter that is true about the grain size in rock

Is -9.2222 a irrational number? Or rational? Im so confused

finlep [7]

Answer:

rational

Step-by-step explanation:

Any number that can be written with a finite number of digits is rational. The given number is rational. (It has 5 digits.)

__

Any repeating decimal is rational.

If this were -9.2222..., it would be -9 2/9 = -83/9, also a rational number.

_____

A number is irrational if it cannot be represented exactly as a decimal or repeating decimal. That is, its decimal fraction part continues forever without repeating.

5 0

3 years ago

The vertices of ΔMNO are M (1, 3), N (4, 9), and O (7, 3). The vertices of ΔPQR are P (3, 0), Q (4, 2), and R (5, 0). Which conc

vodka [1.7K]

Answer:

They are similar by the definition of similarity in terms of a dilation.

Step-by-step explanation:

Given:

The vertices of ΔMNO are M (1, 3), N (4, 9), and O (7, 3). The vertices of ΔPQR are P (3, 0), Q (4, 2), and R (5, 0).

To choose: the correct option

Solution:

According to distance formula distance between points $(x_1,y_1),(x_2,y_2)$ is given by $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

For ΔMNO,

$MN=\sqrt{(4-1)^2+(9-3)^2}=\sqrt{(3)^2+(6)^2}=\sqrt{45}\\NO=\sqrt{(7-4)^2+(3-9)^2}=\sqrt{(3)^2+(-6)^2}=\sqrt{45}\\\\MO=\sqrt{(7-1)^2+(3-3)^2}=\sqrt{(6)^2+(0)^2}=\sqrt{36}=6\\$

For ΔPQR,

$PQ=\sqrt{(4-3)^2+(2-0)^2}=\sqrt{(1)^2+(2)^2}=\sqrt{5}\\QR=\sqrt{(5-4)^2+(0-2)^2}=\sqrt{(1)^2+(-2)^2}=\sqrt{5}\\\\PR=\sqrt{(5-3)^2+(0-0)^2}=\sqrt{(2)^2+(0)^2}=2\\$

So,

$\frac{MN}{PQ}=\frac{\sqrt{45} }{\sqrt{5} }=\sqrt{9}=3\\ \frac{NO}{QR}=\frac{\sqrt{45} }{\sqrt{5} }=\sqrt{9}=3\\\frac{MO}{PR}=\frac{6 }{2 }=3\\$

Therefore, They are similar by the definition of similarity in terms of a dilation.

Two triangles are said to be similar if their sides are proportional.

8 0

3 years ago

(a.) Vivian bought one bulb for $4. How many bulbs can Vivian buy if she has $128?

Shalnov [3]

Answer:

D because it’s D give me brainless

Step-by-step explanation:

8 0

2 years ago

Would appreciate help!!

Artemon [7]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Lawyers for each side of a case are questioning people who received a jury summons. What part of the trial process does this des

Phoenix [80]

Answer:

The case is in the deliberation phase, and the jury selection will follow.

Step-by-step explanation:

As you may already know, a jury is a court with the active and influential participation of citizens who have been called upon to decide whether a defendant is guilty or not of the crimes being accused. Generally, the jury is summoned for crimes that offered someone life risks.

The citizens chosen to represent the jury will be selected shortly after the decision-making phase. The selection of the jury allows defense and prosecution attorneys to question the reason why each citizen was selected.

8 0

3 years ago