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Marianna [84]
3 years ago
11

Please help me with my math question Will give brainliest Brainliest!!!!

Mathematics
2 answers:
DiKsa [7]3 years ago
6 0

Answer:

12x - 6

Step-by-step explanation:

8x - 3 + 4x - 3

12x - 6

x = - 2

ch4aika [34]3 years ago
6 0

Answer:

12x-6

Step-by-step explanation:

For our first step, let's rearrange our equation to get our variable terms (8x and 4x) and our constants (the two 3's) together:

8x+4x-3-3

Taking away 3 twice is the same as taking away 6, and if we have 8 x's and add another 4 x's, that's the same as 8 + 4 = 12 x's, which we can write as 12x. So our simplified expression becomes

12x-6

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How many variable terms are in the expression 3x to the third power Y plus 5X to the second power plus Y +9
andrew-mc [135]

Well, variables are stuff like x and y because they can represent a number. They are variable in an equation. so if you have (3x^3)+(5X^2)+Y+9 then your variables are x X and Y (im assuming the capital X is there and not a typo) if that was a typo and meant to be lowercase, then its just a 2 variable with the x and y

8 0
3 years ago
Write an equation of the line that passes through the points (4,7) and is parallel to and perpendicular to the line y=1/2x-1 ans
emmasim [6.3K]
M = 0.5
y – 7 = 0.5 ( x – 4 )
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6 0
3 years ago
$14,038 is invested, part at 14% and the rest at 12%. If the interest earned from the amount invested at 14% exceeds the interes
Advocard [28]

Answer:

492.99

Step-by-step explanation: x = amount invested at 12%

y = amount invested at 9%

---

x + y = 20287

0.12x = 0.09y + 492.99

---

put the system of linear equations into standard form

---

x + y = 20287

0.12x - 0.09y = 492.99

5 0
2 years ago
The perimeter of an equilateral triangle is p and the length of a side is s.
kompoz [17]

Answer:

s=7

p=3s

Step-by-step explanation:

The perimeter is the side length times 3

So the equation would be p=3s

Plug in 21 for p

21=3s

That means s=7

8 0
2 years ago
Is circumference cubed, squared, or just left alone?​
irakobra [83]

Circumference is a linear distance. So if the diameter is in feet, then the circumference is also in feet (not square feet or cubic feet)

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

Example:

Let's say we had a circle with diameter d = 10 feet

The circumference is approximately...

C = pi*d

C = 3.14*10

C = 31.4

The circumference is roughly 31.4 feet

The circumference is essentially the distance around the circle's edge. We can use a flexible ruler or a string to help measure out this distance, or you can imagine laying the circle's edge to be placed along a straight line, which is another way to help measure the perimeter.

5 0
3 years ago
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