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Tom [10]
3 years ago
8

How do you solve this question 2(x-2)+3(x+1)=9

Mathematics
1 answer:
fomenos3 years ago
8 0

2(x - 2) + 3(x + 1) = 9

2x - 4   + 3x + 3  = 9      <em>distributed the 2 and 3 on the left side</em>

               5x - 1   = 9      <em>added like terms (2x + 3x) and (-4 + 3)</em>

                     5x = 10      <em>added 1 to both sides</em>

                       x  = 2       <em>divided 5 from both sides</em>

Answer: x = 2

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How is 4^m times 4^n different from (4^m)^n?
xenn [34]
Well 4^m*4^n can be added so lets say you have 4^4*4^6 that would just be adding the exponets to get 4^10. but (4^m)^n that is multiplying the exponet of 4 to n so (4^6)^4 would be 4^24.
4 0
3 years ago
Bernice sells 135 seashells by the seashore every day. She sells each sea shell for 3 dollars. For how many days does Bernice ne
slavikrds [6]

Answer:

Bernice would need 6 days assuming that everything remains constant to make $2430.

Step-by-step explanation:

Assuming she sells every single seashell every day.

First, find the total amount she makes per day by multiply the amount she sells them for ($3) with the total amount of sea shells she sells each day ($135):

135 x 3 = $405

Bernice makes $405 each day.

Now, to solve for the amount of days, divide the total amount she wants to make ($2430) with the amount she makes per day ($405):

2430/405 = 6

Bernice would need 6 days assuming that everything remains constant to make $2430.

~

5 0
3 years ago
PLEASE HELP! THANKS!!
stepladder [879]
X=12 because I said so and I’m smart
7 0
3 years ago
PLEASE HURRY!!
N76 [4]

Answer:

it's a

Step-by-step explanation:

use desmos, if you can :)

4 0
3 years ago
Read 2 more answers
Pls help with this ..its to be submitted this monday.....pls pls pls
Svet_ta [14]

Answer:

9pr = 2q^2

Step-by-step explanation:

28.

px^2 + qx + r = 0

If one root is A then the other root is 2A

We have A + 2A = -q/p   and A*2A = r/p

So 3A = -q/p  so A = -q/3p and  A^2  = r/2p  so A = √ (r / 2p)

Equating  these 2 equations:-

-q/3p =  √(r / 2p)

q^2 / 9p^2 = r / 2p

9p^2r = 2pq^2

9pr = 2q^2   (answer)


6 0
3 years ago
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