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Lady bird [3.3K]
2 years ago
10

Pls help will give brainliest

Mathematics
1 answer:
kari74 [83]2 years ago
4 0
4.3x(3.9 - 8.5) + 2.3y(-6.2 - 9.1)......when x = -2.1 and y = 3.5
4.3x(-4.6) + 2.3y(-15.3) 
4.3(-2.1)(-4.6) + 2.3(3.5)(-15.3)
-9.03(-4.6) + 8.05(-15.3)
41.538 - 123.165 
-81.627 <===
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Find y when x = 3 of the equation for y=2x+12
ser-zykov [4K]

Answer:

y = 18

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

y = 2x + 12

x = 3

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                                                                                                y = 2(3) + 12
  2. Multiply:                                                                                                           y = 6 + 12
  3. Add:                                                                                                                 y = 18
3 0
3 years ago
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HURRY WILL GIVE BRAINLEST
Anettt [7]

Answer:

The point is located at (0,7) is correct

The point is on the y-axis. is correct

Step-by-step explanation:

The point is located at (7,0). is wrong because first the x values comes and then y values come here the x value is 0 and y value is 7

The point is on the x-axis.this is also wrong as you can see that the point lies on y axis not x axis

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Step-by-step explanation:

When x=-9, y=2. So, f(-9)=2.

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949 rounded to the nearest ten would be 950 because 5 and above rounds up to the next 10.
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