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MatroZZZ [7]
3 years ago
10

Which ordered pair in the form (x,y) is a solution of this equation? 3x-4y=21

Mathematics
2 answers:
kogti [31]3 years ago
3 0

Answer:

c

Step-by-step explanation:

pychu [463]3 years ago
3 0
It should be C. If you input the X value of 7 into the equation it comes out as 21. Then input 0 to the y, this gives you 0. This leaves you with 21. Which makes the equation true.
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Find the area of the parallelogram, trapezoid, rhombus, or kite. Round to the nearest tenth, if necessary.
Sergeeva-Olga [200]

Answer:

  • 69.3 yd²

Step-by-step explanation:

Area equation of the parallelogram

  • A = bh, where b- base, h - height

Looking at the picture, we can see the right triangle is isosceles as one of interior angles is 45°. It has hypotenuse of 7 and legs of h.

As per property of 45° right triangle the hypotenuse is √2 times the leg.

It gives us

  • h√2 = 7 ⇒ h = 7/√2 = 4.95 (rounded)

Now find the area

  • A = 14*4.95 = 69.3 yd²
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3 years ago
20 POINTS I NEED ANSWER
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Step-by-step explanation:

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3 years ago
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Jonah’s house and his grandparents’ house are 7.312 meters apart. What is this distance in yards?
nignag [31]

Answer:

7.312 meters = 7.996,5 yd

6 0
3 years ago
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5(x 1) − 8 = 5x(2 − 4)
svp [43]
Answer:
5 x (2 - 4)
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Hope this helps!

3 0
4 years ago
2 x (3^3-5+8) pemdas
Pavel [41]

Answer:

60

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

Step-by-step explanation:

<u>Step 1: Define Expression</u>

2 × (3³ - 5 + 8)

<u>Step 2: Evaluate</u>

  1. [Parenthesis] Exponents:                    2 × (27 - 5 + 8)
  2. [Parenthesis] Subtract:                        2 × (22 + 8)
  3. [Parenthesis] Add:                               2 × 30
  4. Multiplication:                                      60
6 0
3 years ago
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