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prohojiy [21]
3 years ago
8

Evaluate xy + 9, if x = 7 and y = 9.

Mathematics
1 answer:
Nataly_w [17]3 years ago
7 0
Hi there! We know that x=7 and y=9, so we are going to set up a problem. The problem is going to be 7*9+9. 7*9+9=72. Therefore, the answer is 72.
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PLEASE HELP ME I DONT GET THIS QUESTION
andreev551 [17]
C because u have to add all the sides
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3 years ago
An Aribraska resident who earns $32,000 would<br><br> owe how much in tases?
Triss [41]

Answer: $1,300

Step-by-step explanation:

edge 2021 trust yo

4 0
3 years ago
Read 2 more answers
Expand and simplify using the binomial theorem (3x - 1)^4.
Charra [1.4K]

us pascal triangle

          1

        1   1

     1    2    1

   1    3    3    1

1     4    6    4    1  

each number is the sum of 2 above it and the 1's are on the outside because only 1 number is above them and its 1

so since its ^4 we use row 4 (actually the 5th because the top row is row zero)  

these at the coefficients

so here is

1a^4b^0-4a^3b^1+6a^2b^2-4a^1b^3+1a^0b^4

or easier to see it vertically

notices how exponential start a 4 and 0 until 4 goes down to 0 and 0 goes up to 4

(3x - 1)

a = 3x

b = -1

1a^4b^0  = 1(3x)^4(-1)^0

-4a^3b^1   =  -4(3x)^3(-1)^1

+6a^2b^2 ....

-4a^1b^3 .....

+1a^0b^4....

then write it horizontally

I think you see now,  when you expand this you will have your answer

5 0
3 years ago
45x+10y+50=?<br> PLZ HELP ASAP DUE TODAY!
Viktor [21]

Answer:

5(9x + 2y + 10)

or

x = 0

y = -5

Step-by-step explanation:

If you are just factoring this, you will factor a 5 out from everything.

5(9x + 2y + 10)

or if you are trying to solve just isolate one of the variables and then substitute it into the original equation

45x + 10y = 50

10y = 50 - 45x

y = 5 - 4.5x

45x + 10(5-4.5x) + 50

45x + 50 - 45x + 50

x=0

45(0) + 10y + 50

0 + 10y + 50

10y + 50

10y = -50

y = -5

and it would be x = 0 and y = -5

7 0
3 years ago
How do you solve this math problem
marin [14]
D(t)=0.8 times 6 squared will equal to 28.8, when you do all of the math.

3 0
4 years ago
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