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konstantin123 [22]
3 years ago
5

ASAP I NEED THIS ANSWERED

Mathematics
1 answer:
Natalka [10]3 years ago
8 0

The width of the rectangle is 9 cm.

The length of the rectangle is 34 cm.

<u>Step-by-step explanation</u>:

step 1 :

Let width of the rectangle be 'x'

The length of the rectangle = 7 + 3x

step 2 :

Perimeter of the rectangle = 2 (length + width)

⇒ 86 = 2 (7 + 3x + x)

⇒ 86 = 2 (7 + 4x)

⇒ 86 = 14 + 8x

⇒ 72 = 8x

x = 72/8

x = 9

∴ The width of the rectangle is 9 cm

step 3 :

The length of the rectangle = 7 + 3x

                                              = 7 + 3(9)

                                              = 7+27 = 34 cm

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Evaluate the expression (7+6i)−(−9−8i) and write the result in the form a+bi.
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Remove the parentheses and combine the like terms:

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3 years ago
G(x) = x3 - 4 <br> h(x) = x2 + 2<br> Find h(-2) - g(-1)
Lady bird [3.3K]

Answer:

11

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>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

g(x) = x³ - 4

h(x) = x² + 2

h(-2) is x = -2

g(-1) is x = -1

<u>Step 2: Find h(-2) - g(-1)</u>

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  3. Add/Subtract:               6 - (-5)
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