Mathematics, 07.02.2021 01:10 Manuelperez1373

13-3i=-8 what does i equal

Answers: 2

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Answers

Answer from: jayc36809

i = 7

Step-by-step explanation:

13 - 3i = -8 -> -3i = -21 -> i = 7

Answer from: javibote

i = 7

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

to Right

Equality Properties

Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of Equality

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

13 - 3i = -8

Step 2: Solve for i

[Subtraction Property of Equality] Subtract 13 on both sides: -3i = -21[Division Property of Equality] Divide -3 on both sides: i = 7

Step 3: Check

Plug in i into the original equation to verify it's a solution.

Substitute in i: 13 - 3(7) = -8Multiply: 13 - 21 = -8Subtract: -8 = -8

Here we see that -8 does indeed equal -8.

∴ i = 7 is the solution to the equation.

Answer from: Quest

x ≥ 18 is your answer

step-by-step explanation:

let "a number" = x

(2/3)x + 17 ≥ 29

isolate the variable (x). do the opposite of pemdas (parenthesis, exponent (& root), multiplication, division, addition, subtraction).

first, subtract 17 from both sides.

(2/3)x + 17 (-17) ≥ 29 (-17)

(2/3)x ≥ 29 - 17

(2/3)x ≥ 12

next, multiply 3/2 to both sides to isolate the x

(3/2)(2/3)x ≥ 12(3/2)

x ≥ 12(3/2)

simplify. multiply, then divide

x ≥ (12 * 3)/2

x ≥ (36)/2

x ≥ 18

x ≥ 18 is your answer

Answer from: Quest

the answer is 40.

proof:

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