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Alex_Xolod [135]
3 years ago
14

Select one:

Mathematics
2 answers:
trasher [3.6K]3 years ago
7 0

Answer:

C

Step-by-step explanation:

plug the first point in (0), cancels out B, D, E bc g(x) doesnt equal to -1

now the two left are A and C, plug in 1, A doesn't work because 1^2-1=0, not 1

C works because 2(1)-1 = 2-1= 1

Sedaia [141]3 years ago
6 0

Answer:

C

Step-by-step explanation:

We can see that the y int is -1 which eliminates B D and E.

Next we can test one of the equations by plugging in one of values from table.

From this we can see that C is correct.

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Kylas class packs lunches for the local shelter they make the same number of sandwiches each minute in 5 minutes the class makes
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Answer:

640

Step-by-step explanation:

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If 1 ounce=28.35 grams, how many grams are in one pound?
Andre45 [30]
There is 453.592 grams in 1 pound
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Which equation results from isolating a radical term and squaring both sides of the equation for the equation sqrt(x+6)+sqrt(x)=
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(sqrt(x+6))^2 + (sqrt(x))^2 = 8^2
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Evaluate 21 - n for n = 3 *<br><br> please help me with this
qwelly [4]

Answer:

18

Step-by-step explanation:

21-n; n=3

Substitute n for 3:

  • 21-3

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4 0
3 years ago
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How many grams of NH3 are required to produce 4.65 g of HF
nignag [31]

1.326 grams of NH3 are required to produce 4.65 g of HF.

Step-by-step explanation:

Balanced chemical reaction is written first to know the number of moles taking part in original reaction.

NH3 +3 F2 ⇒3 HF  +  NF3

Given:

mass of HF = 4.65

First the number of moles of HF in 4.65 grams is calculated by using the formula:

number of moles (n) = \frac{mass}{atomic mass of 1 mole}

atomic mass of HF = 20 grams/mole

putting the values in the above equation number of moles can be found.

n = \frac{4.65}{20}

  = 0.235 moles of HF are given.

From the equation it can be said that:

1 mole of NH3 reacts to form 3 moles of HF

so, x moles of NH3 would react to form 0.235 moles of HF

\frac{3}{1} = \frac{0.235}{x}

3x = 0.235

x = \frac{0.235}{3}

x = 0.078 moles of NH3 is required.

The moles are converted to mass by applying the formula:

mass = atomic mass X number of moles (atomic mass of NH3 = 17 grams/mole)

        putting the values in the formula

mass = 17 X 0.078

mass = 1.326 grams

8 0
3 years ago
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