-5(-4m - 6)
you have to use the distributive property
20m - 30
-20m - 30
20m + 30
pick the right answer

Answer:

[tex]\frac{\pi }{4}[/tex]

Step-by-step explanation:

[tex]cos^{-1}[/tex] ([tex]\frac{\sqrt{2} }{2}[/tex] ) = [tex]\frac{\pi }{4}[/tex] = θ

6370 in3

Step-by-step explanation:

Answer:

156cm squared. It is the only reasonable one

Step-by-step explanation:

Answer:

a=44, b= 58

Step-by-step explanation:

You look at the first triangle that gives you the two angles, and with the rule that every triangle's angles inside it need to add up to 180 degrees, you can determine that the missing angle is 46 degrees, which translates over to the other triangle, meaning that a would be 44 degrees.

The other triangle has two identical angles, being 61 degrees, which helps translate to the smaller triangle, again allowing you to infer that b is 58 degrees

Answer:

The fraction of the pencils that are red is 4/10. The fraction of the pencils that are black is 6/10.

Step-by-step explanation:

[I can't draw you a model but I reccomend that when you do, you seperate it into 10 pieces and mark 4 as red pencils and 6 as black pencils. You could also simplify 4/10 to 2/5 and 6/10 to 3/5, but instead you'd seperate the model into 5 pieces and mark 2 as red pencils and 3 as black pencils.]

First, let's add this up so we have our denominator.

4 + 6 = 10.

Now that we know that the denominator is 10, we apply it to the question.

The box has 4/10 red pencils and 6/10 black pencils.

The box has 4/10 red pencils and 6/10 black pencils.If you were to simplify, it'd be 2/5 red pencils and 3/5 black pencils.

Answer:

The author is trying to say that learning from before is not just learning acient times, but is also learning people of the past, how life was, and ways of living.

Step-by-step explanation:

Answer:

(x+1) (x-1)

Step-by-step explanation:

rewrite 1 as 1^2

Apply diffrence of two squares formula

x^2-y^2= (x+y)(x-y)

x^2-1^2= (x+1) (x-1)

Answer:

B and C or in other words 3.5 x 0.98 and 7/2x98/100

Step-by-step explanation:

Step-by-step explanation:

3×10^10 is the scientific notation of 30000000000

Answer:

x>−178/7

Step-by-step explanation:

I'm assuming you wanted to solve for the inequality of x, if so this is the answer.

Answer:

16

Step-by-step explanation:

the answer is 16 4 times 4.

Answer:

me im lonely

Step-by-step explanation:

Answer:

C

the answer is c I have done this before

Answer:

72

Step-by-step explanation:

Answer:

Circumference= 84.78 or if needed simplified 85

Step-by-step explanation:

c=2×3.14×r

in this case to get the radius divide the diameter by 2 which would equal 13.5 so the formula would be

2×3.14×13.5=84.78

Answer:

A

Step-by-step explanation:

Look at the positive-negative values of the quadrants.

The transformed figure still has positive x values, but now has negative y values.

Answer: B, cause it's the opposite of positive X, Y.

Answer:

the answer is A

Step-by-step explanation:

your welcome sorry if im wrong

Answer:

45 g de oxido de hierro (III) liberarán 18.9 L de CO₂

Step-by-step explanation:

La reaccion quimica es la siguiente:

Fe₂O₃ (s) + 3CO (g)  →  2Fe (s) + 3CO₂ (g)

1 mol de oxido de hierro (III), reacciona con 3 moles de monoxido de carbono para liberar 3 moles de CO₂ y 2 moles de Fe sólido.

Pasamos la masa de F₂O₃ a moles:

159.6 g . 1 mol /159.7g = 1 mol de oxido

Entonces, aplicamos la regla de tres:

1 mol de oxido produce 3 moles de dioxido de carbono, indudablemente eso será lo que formemos de producto, por lo tanto 3 moles de CO₂ estan ocupando 67.2 litros.

Ahora calculamos los nuevos moles:

45g . 1 mol /159.7 g = 0.282 moles

Aplicamos la regla de tres:

Si un mol de oxido produce 3 moles de CO₂

0.282 moles producen (0.82 . 3 ) = 0.845 moles de CO₂

Como tenemos menos moles de gas, el volumen ocupado sera mayor, hacemos la regla de tres:

Si 3 moles de CO₂ ocupan 67.2 litros

0.845 moles ocuparan (0.845  . 67.2/  3 ) =  18.9 litros

Answer:

Step-by-step explanation:

Given

Find

Substitute x with x/3:

Correct choice is C.

Answer :

880 (hope this helps)

Step-by-step explanation:

l.w.h.

the length is 10

i geuss the wit is 11

and the hieght is 8

multiple in order.

Answer:

3x + 2

Step-by-step explanation:

The height of a poster is 7x+10 and its perimeter is 20x+24 . What is the width of the poster?

The shape of a poster = Rectangular shape

Hence:

The Perimeter of a Rectangle (Poster) = 2L + 2W

Where:

Length = Height = 7x + 10

Perimeter = 20x + 24

Therefore:

20x + 24 = 2(7x + 10) + 2W

20x + 24 = 14x + 20 + 2W

2W = 20x + 24 - (14x + 20)

2W = 20x + 24 -14x - 20

2W = 6x + 4

W = (6x + 4)/2

W = 3x + 2

Therefore, the width of the poster

= 3x + 2

Answer:

So I would say something like: My living situation doesn't effect my school work I have plenty of time to do my academics. I don't travel between homes I stay in one house. And I have access to a computer and cell phone. -Your friend, Bill Cipher

Step-by-step explanation:

Answer

There is one solution

Step-by-step explanation:

-5(4 - x) = -5x + 20

-20 + 5x = -5x + 20

5x = -5x

Answer:

d

Step-by-step explanation:

so first off because it is a dotted line then it can only either be < or >.

If the shaded region is about the line than y is greater than but if its below the line then y is less the and because its above then y is greater than.

Answer:

Step-by-step explanation:

Math

way

Answer:

180-m

Step-by-step explanation:

Answer:

The answer is B. 180-m....