A student jogged at a constant rate of 7 miles per hour for
1 1/3
hour. The function d = 7t can be used to find the
distance in miles the student jogged during t, the time in hours.
What is the range of the function for this situation?

A - 0_< t _< 1/3

B - {0,7/3}

C - 0_< d _< 7/3

D - {0,1/3}

Step-by-step explanation:

1. N2 + 3H2 → 2NH3

How many moles of NH3 could you make with 4.2021 g of N2?

From the reaction;

1 mol of N2 produces 2 mol of NH3

1 mol of N2 = 14g of N2

14g of N2 produces 2 mol of NH3

4.2021 g of N2 produces x mol of NH3

14 = 2

4.2021 = x

x = 4.2021  * 2 / 14 = 0.6003 mol of NH3

2. 2Na + Cl2 → 2NaCl

How many moles of Cl2 do you need to use in order to react with 34.485 g of Na?

From the equation of the reaction;

2 mol of Na reacts with 1 mol of Cl2

1 mol of Na = 23g of Na

2 mol of Na - 46g of Na

46g of Na reacts with 1 mol of Cl2

4.485 g of Na reacts with x mol of Cl2

46 = 1

4.485 = x

x = 4.485 * 1 / 46 = 0.0975 mol of Cl2

3. H2SO4 + 2NaNO2 → 2HNO2 + Na2SO4

How many grams of NaNO2 do you need in order to make 24.14714 g of Na2SO4?

From the reaction;

2 mol of NaNO2 produces 1 mol of Na2SO4

2 mol of NaNO2 = 68.995 g/mol * 2mol = 137.99g

1 mol of Na2SO4 = 142.04 g

137.99g of NaNO2 produces 142.04 g of Na2SO4

xg of NaNO2 produces 24.14714 g of Na2SO4?

137.99 = 142.04

x = 24.14714

x = 24.14714 * 137.99 / 142.04 = 23.459g

4. 2Na + 2H2O → 2NaOH + H2

How many grams of NaOH could you make with 8.0465 g of Na?

From the reaction;

2 mol of Na produces 2 mol of NaOH

2 mol of Na = 23g/mol * 2mol = 46g

2 mol of NaOH = 40g/mol * 2 = 80g

46 g of Na produces 80g of NaOH

8.0465 g of Na produces xg of NaOH

46 = 80

8.0465 = x

x = 8.0465 * 80 / 46 = 13.994g

5. 2Mg + O2 → 2MgO  

If you are burning 5.8332 g of Mg, how many grams of MgO will this make?

From the reaction;

2 mol of Mg produces 2 mol of MgO

2 mol of Mg = 24 g/mol * 2mol = 48g

2 mol of MgO = 40.3 g/mol  * 2mol = 80.6g

48g of Mg produces 80.6 g  of MgO

5.8332 g of Mg produces xg of MgO

48 = 80.6

5.8332 = x

x = 5.8332 * 80.6 / 48   = 9.8g

6. FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl

How many grams of NaCl could you make with 2.43306 g of FeCl3?

From the reaction;

1 mol of FeCl3 produces 3 mol of NaCl

1 mol of FeCl3 = 162.2 g

3 mol of NaCl = 58.44 g/mol * 3 mol = 175.32 g

162.2g of FeCl3 produces 175.32 g of NaCl

2.43306 g of FeCl3 produces xg of NaCl

162.2 = 175.32

2.43306 = x

x = 2.43306 * 175.32 / 162.2 = 2.63g

Answer:

C, B

Step-by-step explanation:

Basically to find the slope you take the rise over run. How many squares does the line go up, over how many does it go left or right. As you can see in the diagram, it goes up 2 squares and goes left 1 square, giving the slope 2/1, which is 2.

The slope of a horizontal line is straight, which means it goes up 0, so automatically your answer is zero, because dividing anything by 0 is 0.

Answer:

£4.38

Step-by-step explanation:

You need to find 1/4 and then add it on

Answer: (x+14)^2

Step-by-step explanation:

Answer:

1/2 one half

Step-by-step explanation:

Answer:

Multiply both the numerator and the denominator by the same whole number.

For example;

If you multiply 1/2 by 2/2, this will equal 2/4. You can simplify 2/4 to 1/2.

So to find 1/2 to be equivalent to another fraction, multiply both the numerator and the denominator by the same number to find a fraction that equals 1/2.

Answer:

Twenty - percent pounds

Answer:

Step-by-step explanation:

dont need to graph the center dot, its just the origin

Answer:

75/99

Step-by-step explanation:

Answer:

Y=-5X+1

Step-by-step explanation:

Answer:

y = -5x + 1

Step-by-step explanation:

y = mx + b

m = [tex]\frac{y_{2}- y_{1} }{x_{2}- x_{1}}[/tex] = [tex]\frac{-9-(-4)}{2-1} = -5[/tex]

y = -5x + b: then plug in a point to find b

-19 = -5(4) + b

-19 = -20 + b

b = 1

Plug in all the values to get: y = -5x + 1

Answer:

Yes, that is correct. Congrats 7 year old.

Step-by-step explanation:

2 plus 2 equals 4

:)

thanks for points

Answer:

it should be C. i hope this helps

Answer:

The answer is C. Square root

Step-by-step explanation:

The parent function of given graph is a square root function

The correct answer is an option (c)

"The function of the form [tex]f(x)=\sqrt[3]{x}[/tex] "

"This function obtained by finding the inverse of a given function."

"The function of the form [tex]f(x)=\sqrt{x}[/tex] "

"The function of the form f(x) = |x| "

For given question,

We have been given the graph of a function.

We need to identify the parent function for the given the graph.

We can observe that the graph increases slowly.

The range of the function is set of all positive values.

We know that the range of square root function is always positive.

If we draw the graph for following functions

i) cube root function

ii) reciprocal function

iii) square root function

iv) absolute value function

Then the parent function of given graph is a square root function

Therefore, the correct answer is an option (c)

Learn more about the square-root function here:

https://brainly.com/question/14231651

#SPJ2

Answer: See explanation

Step-by-step explanation:

The information given in the question can be turned into an equation as:

2u + y = 30 ........ i

5u + y = 42 ........ ii

Subtract i from ii

3u = 12

u = 12/3 = 4

A pair of socks cost $4

Since 2u + y = 30

2(4) + y = 30

8 + y = 30

y = 30 - 8 = 22

A pair of slippers cost $22

Answer:

D. A'(1,-7), B'(2,-1), C'8,-2) and D'(7,-5)

Step-by-step explanation:

Probably too late, but I took the quiz

Answer:

D

Step-by-step explanation:

Keep it simple, but correct :)

Answer:

Your answer is indeed Saturday.

Step-by-step explanation:

The day before, (Wednesday) the day before, (Tuesday) yesterday, (Monday).

And then after the day before my Birthday, (sunday and then Saturday.)

Answer:

the answer is B) -9x2 -90x -221

Answer:

381 ft

Step-by-step explanation:

first get the area of the kitchen

22 x 18= 396 ft

now get the area of the island which is 3x 5= 15 ft

to know how much she would need to cover (not including the island), subtract 396 to 15

that would be 381 ft

Answer:

say the vertex of y axis and x axis i.e (0,0)

Answer:

the origin is (0,0)

Step-by-step explanation:

the origin of a coordinate starts from

(0,0) then it is easier to lable all the coordinates

of a coordinate geometry

Answer:

$3573. 64

Step-by-step explanation:

Convert 11.25% to the decimal fraction 0.1125.  Then subtract this result from 1.0000:  0.8875.

After 14 years, the formerly $19000 car will have the value

$19000(0.8875)^14 = $3573. 64

Answer: 46

Step-by-step explanation:

Answer:

o represent 1/3 on a number line, we divide the gap between O and A into 3 equal parts. Let T and Q be the points of division. Then, T represents 1/3 and Q represents 2/3, because 2/3 means 2 parts out of 3 equal parts as shown below. By using the same procedure, point O represents 0/3 and point A represents 3/3.

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

divide 10 by 2

Answer:

There are 5 boys in the class

Answer:

$7.49

Step-by-step explanation:

89.88/12= 7.49

Answer:

Rate: 250 bagels per hour

3500 bagels in 14 hours

Step-by-step explanation: