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Aleks04 [339]
4 years ago
9

a student is given the perimeter of a rectangle (x+4*x) and the perimeter of the square (x+2*x+2). the student states that the t

wo figures have the same perimeter. is the student correct?
Mathematics
1 answer:
kogti [31]4 years ago
7 0
No, b/c one would be 3x + 2 while the other is 5x. plug in a few numbers and you'll see they're not the same
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PQR is a right angled triangle calculate the size of angle marked x
romanna [79]

Answer:

\displaystyle x \approx 37.4^\circ

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>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Trigonometry</u>

  • [Right Triangles Only] SOHCAHTOA
  • [Right Triangles Only] cosθ = adjacent over hypotenuse<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

Angle θ = <em>x</em>

Adjacent Leg = 5.8

Hypotenuse = 7.3

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute in variables [Cosine]:                                                                    \displaystyle cosx^\circ = \frac{5.8}{7.3}
  2. [Fraction] Divide:                                                                                             \displaystyle cosx^\circ = 0.794521
  3. [Equality Property] Trig inverse:                                                                    \displaystyle x^\circ = cos^{-1}(0.794521)
  4. Evaluate trig inverse:                                                                                      \displaystyle x = 37.39^\circ
  5. Round:                                                                                                             \displaystyle x \approx 37.4^\circ
8 0
3 years ago
If the quotient of a number and 15 is added to 1/5 the result is 17/15.find the number
earnstyle [38]
Hello,

Let's assume x the number
\dfrac{x}{15} + \dfrac{1}{5} = \dfrac{17}{15} \\&#10;&#10; \dfrac{x}{15} + \dfrac{3}{15} = \dfrac{17}{15} \\&#10;&#10;x+3=17\\&#10;x=17-3\\&#10;x=14&#10;&#10;&#10;

5 0
3 years ago
Becca's new tent is in the shape of a pyramid with a square base. When the tent is fully assembled, it has a height of 72 inches
nekit [7.7K]
Volume= 55,296 in^3
(WORK SHOWN BELOW)

7 0
3 years ago
Math homework please help
Viktor [21]

the first on is -42

the second one is -80

the last on is -88

3 0
3 years ago
Help please anyone thank you
vampirchik [111]

Answer:

true

Step-by-step explanation:

the line is going down. if it was positive then it would be going from left all to right going up.

7 0
3 years ago
Read 2 more answers
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