Question

Please help I need this done by tomorrow

Thank you

Answer 1

19. C

20. B

21. 200

22. im not sure if im right but i think p+6

23. C

24. Can't see

Answer 2

Question 1:

For this case we must find the value of the following expression:

`4 ^ 3-3 ^ 3`

So we have to:

`4 ^ 3 = 4 * 4 * 4 = 4 ^ 2 * 4 = 16 * 4 = 64\\3 ^ 3 = 3 * 3 * 3 = 3 ^ 2 * 3 = 9 * 3 = 27`

Substituting we have:

`64-27 =\\37`

Thus, the value of the expression is 37.

Answer:

`4 ^ 3-3 ^ 3 = 37`

Option C

Question 2:

For this case we have the following expression:

`2 * 3 ^ 2`

We must simplify it!

We have to:

`3 ^ 2 = 3 * 3 = 9`

Rewriting the expression we have

`2 * 9 =`

2 times 9 is 18.

Finally we have to:

`2 * 3 ^ 2 = 18`

Answer:

`2 * 3 ^ 2 = 18`

Option B

Question 3:

For this case we have that by definition, the perimeter of a square is given by:

`P = 4l`

Where:

l: It's the side of the square

In this case they tell us that:

`l = 50 \ in`

Thus:

`P = 4 * 50\\P = 200 \ in`

Now we must do a conversion. By definition we have to:

1 foot equals 12 inches. So:

`200 \ in * \frac {1} {12} * \frac {ft} {in} = \frac {50} {3} ft = 16.67ft\\`

Answer:

The perimeter of the garden is
`16.67 \ ft`

Question 4:

For this case we have to:

Let "p" be the variable that represents the number of pages Nora read yesterday.

If today I read 6 more than yesterday, then we can write the following expression:

`p + 6`

So, the number of pages that Nora read today is
`p + 6`

ANswer:

The number of pages that Nora read today is
`p + 6`

Question 5:

For this case we have that by definition, the area of ​​a triangle is given by:

`A = \frac {b * h} {2}`

Where:

b: It is the base of the triangle

h: It is the height

We have as data that:

`b = 5 \ cm\\h = 8 \ cm`

Substituting we have:
`A = \frac {5 * 8} {2} = \frac {40} {2} = 20 \ cm ^ 2`

The area of ​​the triangle is
`20 \ cm ^ 2`

Answer:

Option B