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frozen [14]
3 years ago
12

Help me with this asap

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0

3x+15=3(x+5)

3x+15=3x+15

15=x

~~~~~~~~~~~~

-3(2x-3)=-6x+9

-6x-3(-3)=6x+9

-12x+9=9

-12x+0

x=0

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Jon and Andy had a total of 560 trading cards. After Jon gave 1/9 of his trading cards to Andy, they has an equal number of trad
Romashka [77]

Answer:

70 cards

Step-by-step explanation:

Let A = the number of Andys cards

J = the number of Jons cards

Jon and Andy had a total of 560 trading cards

A+J = 560

After Jon gave 1/9 of his trading cards to Andy, they has an equal number of trading cards

J - 1/9 J = 1/9 J +A

Combine like terms

8/9 J = 1/9 J +A

Subtract 1/9J from each side

7/9J = A

Substitute this into A +J = 560

7/9J +J = 560

Combine like terms

7/9J +9/9J = 560

16/9 J = 560

Multiply each side by 9/16

9/16 *16/9 J = 560 *9/16

J =315

Jon originally had 315 cards

Now we need to find Andys cards

7/9J = A

7/9 (315) =A

245=A

How many more trading cards did Jon have that Andy in the beginning?

We need to take Jons cards and subtract Andys cards

J-A

315-245

70

6 0
3 years ago
If f(x) = -3x^{2} + 1 then what is the value of f(-2)
Charra [1.4K]

Answer:

37

Step-by-step explanation:

-3x^{2} + 1

replace (x) with (-2)

-3(-2)^{2} + 1

6^2 +1=36+1

=37

7 0
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Solve the system of nonlinear equations: <br><br> 4x - y = 4<br> x^2 - y = -1
rjkz [21]
(x1, y1) = (3,8)
(x2, y2) = (1,0)
6 0
3 years ago
I am very sorry because this is off-topic but is it normal to have 840/500 points? for ranking?
hichkok12 [17]

Answer:

i think so

Step-by-step explanation:

8 0
2 years ago
3 times the sum of y and 9 <br><br> in algebraic expression please help me out!!
Ray Of Light [21]

3(y+9)

plz plz mark brainliest if it helps

3 0
3 years ago
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