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Bad White [126]
3 years ago
14

Evaluate 9x + 3xy − 2 for x = 3 and y = −3.

Mathematics
1 answer:
klemol [59]3 years ago
5 0

Answer:

- 2

Step-by-step explanation:

Given

9x + 3xy - 2

Substitute x = 3 and y = - 3 into the expression

= 9(3) + 3(3)(- 3) - 2

= 27 - 27 - 2 = - 2

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Jacob is tiling his square walk with square tiles. He is able to fit 5 tiles up and 5 tiles across. If each tile has a length of
frozen [14]

Answer:

The perimeter of the kitchen wall = 60 b

Step-by-step explanation:

The number if tiles used in the length side of the square walk = 5 tiles

The length of 1 tiles  = 3 b

So, the length of 5 tiles = 5 x ( Length of 1 tile)  

= 5 x (3 b)  =  15 b

So, the length of the square walk = 1 5 b

Perimeter of SQUARE  = 4 x SIDES

⇒ Perimeter of the wall  = 4 x (Side)

                                        = 4 x (15 b)  = 60 b

Hence, the perimeter of the kitchen wall = 60 b

8 0
3 years ago
Write the expression in terms of cosine.please help.
Aleks04 [339]

Answer:

cos13°

Step-by-step explanation:

Using the cofunction identity

sinx° = cos(90 - x)°

sin77° = cos(90 - 77)° = cos13°

4 0
4 years ago
Help me please! Literally don’t understand the question.
andrey2020 [161]
I think it's d hope it helps

6 0
3 years ago
Read 2 more answers
PLEASE HELP!! With explanation/solution please!!
Tema [17]

Step-by-step explanation:

Just sum the number of cows and buffaloes:

2p^2 - p + 4 + p^2 + p + 1 = 3p^2 +5 animals.

5 0
2 years ago
Read 2 more answers
Given the two points (-1,-4) and (2,5): a. Find the slope between these two points
Dvinal [7]
Easy, using \frac{y1-y2}{x1-x2} to find the intercept:

\frac{-4-5}{-1-2}=

\frac{-9}{-3}=3

This is your slope. m=3

To find y=mx+b form

-4=3(-1)+b

-4=-3+b

-1=b

y=3x-1 in y=mx+b form
4 0
4 years ago
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