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3 years ago

Find the product. -2/9 (-5/3)

Mathematics

1 answer:

harkovskaia [24]3 years ago

6 0

Answer:

10/21 decimal form is 0.370 with repeated sign on top. Tell if I am wrong thx:)

Step-by-step explanation:

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PLESE HELP WILL MARK BRIANLIEST

Marrrta [24]

Answer:

1. a=-9 b=13 c=-1

2. a=1 b=1 c=-11

4 0

3 years ago

Me voy a comprar una barra de cortinas. Como vivo en un doceavo piso, me interesa saber cuál es la longitud máxima que puedo met

iren2701 [21]

Answer:

The maximum length of the bar I could fit in the elevator is 2.87 meters.

Step-by-step explanation:

<u><em>The question in English is</em></u>

I'm going to buy a curtain rod. Since I live on a twelfth floor, I'm interested in knowing the maximum length I can put in the elevator.

So I take out my pocket tape measure, which only measures up to a meter and I measure the floor which turns out to be a square of 1m x 1m, but for the height it doesn't give.

However, there's a sticker on the lift box that says it has a capacity of 2,500 litres.

With all this information, what is the maximum length of bar that would fit me in the elevator?

step 1

Find the height of the elevator

we know that

The elevator has a capacity of 2,500 litres.

$1\ m^3=1,000\ L$

$2,500\ L=2.5\ m^3$

The volume of the elevator is given by

$V=Bh$

where

B is the area of the base

h is the height of the elevator

we have

$B=(1)(1)=1\ m^2\\V=2.5\ m^3$

substitute

$2.5=(1)h\\h=2.5\ m$

step 2

Find the diagonal of the base of the elevator

Let

d ---> diagonal of the base of the elevator

Applying the Pythagorean Theorem

$d^2=b^2+b^2$

substitute

$d^2=1^2+1^2$

$d=\sqrt{2}\ m$

step 3

Find the diagonal of the rectangular prism (elevator)

Let

D ----> diagonal of the rectangular prism

d ---> diagonal of the base of elevator

h ----> height of the elevator

Applying the Pythagorean Theorem

$D^2=d^2+h^2$

substitute

$D^2=(\sqrt{2})^2+2.5^2$

$D^2=8.25\\D=2.87\ cm$

therefore

The maximum length of the bar I could fit in the elevator is 2.87 meters.

3 0

3 years ago

Simplify 2.3w-7+8.1-3w

kotegsom [21]

Steps:

10.4w-7-3

10.4w-10

Answer:

10.4w-10

4 0

3 years ago

What is the answer for #1 and #2??

AfilCa [17]

#1
the answer would be C.) y = -2x + 4
here is why:
start with y = mx +b
imput the slope and the coordinates:
-8 = -2 x (6) + b
then solve for b
-8 = -2 x (6) + b
-8 = -12 + b
b = 4

so then the equation would be
y = -2x + 4

#2
y - 3 = 2 ( x - 7)
y - 3 = 2x - 14
y = 2x - 11

because none of the answers are in standard y=mx+b form I would say that the answer would be none.

4 0

3 years ago

A state vector X for a four-state Markov chain is such that the system is four times as likely to be in state 2 as in 4, is not

Marizza181 [45]

All the components in the state vector need to sum to 1. You're given that component corresponding to state 1 is 0.2, and that the component for state 3 is 0.

That leaves states 2 and 4, for which you're told that the component for state 2 is four times as large. If $x_i$ is the component for state $i$ , then you have

$x_1+x_2+x_3+x_4=1\iff 0.2+4x_4+0+x_4=1\implies5x_4=0.8\implies x_4=0.16$

which means $x_2=4x_4=0.64$ . So the state vector is $\mathbf x=(0.2,0.64,0,0.16)$ .

4 0

3 years ago