How to expand :

-2(t+1)^2+5

Please provide a step by step explanation!!

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:

3240

Step-by-step explanation:

6 x 12 x 5 x 9 =3240

Answer:

12

Step-by-step explanation:

Since f(x) = 3, you would multiply 3 by 4. This is because you are basically saying that you have 4 x's and each x is equal to 3. 3+3+3+3=12 or 4(3)=12

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:

ACB = AC + BC

ACB = 122 + 192 = 314

The answer is b. 314 degrees

Answer:False

Step-by-step explanation:

The commenter before me is trolling. If 3=5, that is a false equation, not true.

There is a photo Below as an attachment or probably shown.

Answer:

its an rhombus

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:

1st step is 19

Step-by-step explanation:

2x-7+7=41+8.

2x=48.

2x÷2=48÷2.

x=19

Answer:

Step-by-step explanation:

Try the points by substituting values of x and y

This gives us the function

Answer:

c

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:

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:

Arc KL [tex]=23[/tex]

Arc OM [tex]=113[/tex]

Step-by-step explanation:

We know that Angle NPM is equal to 90 degrees.

Therefore, Angle KPM is also equal to 90 degrees.

We are told that Arc LM is equal to 67.

Thus, the measure for Arc KL is equal to [tex]90-67=23[/tex]

We also know that Angle OPN is equal to Angle KPL.

Therefore, the measure of Arc ON[tex]=23[/tex]

Using that information, we know that Arc OM is equal to [tex]90+23=113[/tex]

Hope I helped!

Answer:

I believe it is 2 grams.

Step-by-step explanation:

there are 1000 grams in 1 kg, there are 500 crayons, therefore each crayon weighs 2 grams

Answer:

a. 16

b. 117

Step-by-step explanation:

a. 6+10=16

b. 120-3=117

9514 1404 393

Answer:

 n = 6

Step-by-step explanation:

Perhaps you want n for ...

  [tex]4\times10^n=4\,000\,000\\\\10^n=1\,000\,000 \qquad\text{divide by 4}\\\\n=6\qquad\text{count the zeros}[/tex]

__

You know that multiplying by 10 appends a 0 to the right end of an integer number. So, a 1 with 6 zeros has been multiplied by 10 six times. The exponent signifies the number of times the factor is repeated. The exponent, n, is 6.

Answer:

(1,3)

Step-by-step explanation:

the answer is where they intersect and the two lines intersect at (1,3)

Answer:

(1,3)

Step-by-step explanation:

The graph shows you where the point meets (your answer)

hope this helps!!

Answer:

(5,15)

Step-by-step explanation:

yeah thats the answer because

x=5

and

y=15 and x goes first so its (5,15)

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: 1ST ONE CUZ THE LINE IS AT A CERTAIN ANGLE AT A POINT TO MATCH THE FIRST ANSWER

Step-by-step explanation:

Answer:

Ronnie walked the shortest distance by (365 - 262.15 ) = 102.85 ft

Step-by-step explanation:

The image attached represent the rectangular park. In this case, the dimensions are;

AB = CD = 215 ft

AC = BD = 150 ft

Total distance walked by Ross = AB + BD = 215 + 150 = 365 ft

Distance walked by Ronnie = AD

∠ABD = right angle triangle, using pythagoras rules;

AD² = AB² + BD²

AD² = 215² + 150²

AD² = 68725

AD = √68725

AD = 262.15 ft

Distance walked by Ronnie = 262.15 ft

Ronnie walked the shortest distance by (365 - 262.15 ) = 102.85 ft

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: I cant see that last answer but I think it would be that one

Step-by-step explanation:

(Redirected from Obtuse triangle) An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°). An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles.

Hope this helps if it did pls mark me brainiest

none of them

Step-by-step explanation:

an obtuse angle is called to an wngle which is more than 90° and less than 180°

none of these have such an angle

Answer:

-8-5p

Step-by-step explanation:

I'm pretty sure

Answer:

663.

Step-by-step explanation:

Answer:

Step-by-step explanation:

Given

Find

Substitute x with x/3:

Correct choice is C.