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timama [110]
3 years ago
12

Please help i’ll mark!

Mathematics
1 answer:
Lunna [17]3 years ago
5 0

Answer:

-6

Step-by-step explanation:

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Please help me with this and explain so I can get it. Do only 3 and 9
ASHA 777 [7]
5a+b = 5(6)+3 =3
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6 0
3 years ago
The sum of two numbers is 49 and the difference is 25 . What are the numbers?
OLEGan [10]

Answer:

x = 37 y = 12

Step-by-step explanation:

Let x be one number

Let y = other number

x+y = 49

x-y = 25

Add the equations together

x+y = 49

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---------------

2x = 74

Divide by 2

2x/2 = 74/2

x =37

x+y = 49

37+y = 49

Subtract 37 from each side

37+y-37 = 49-37

y = 12

4 0
3 years ago
What is the x-coordinate of the vertex of the parabola whose equation is y = 3x2 + 9x?
Westkost [7]
The vertex is (-1.5, -6.75). So the x-coordinate is -1.5. Hope this helps and if so please leave a good rating and thanks. I really appreciate it. Have a nice day!
4 0
2 years ago
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Please help, I added a photo to show the question. I’m so confused and I need help, so if you could show work I’d really appreci
Mashutka [201]




Angle A = 30 and its complement would be 60. This is because both angles must equal 90 degrees, and 30 + 60 = 90. Also in the directions it states Angle A must be half of its complement. 30 is half of 60. Sorry I don’t have any work, I just did it in my head!

Any questions? Hope this helps!






7 0
3 years ago
Read 2 more answers
Write an expression that represent the sum of a number and 12
antiseptic1488 [7]

Answer:

5+12

there is no equals sign in an expression so it is just that



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3 years ago
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