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nadya68 [22]
3 years ago
8

Please help me it is due soon, please no links

Mathematics
1 answer:
lora16 [44]3 years ago
6 0

Answer:

The length of the three sides 5, \sqrt{58} , \sqrt{65}

The triangle <u>is not</u> a right triangle

Step-by-step explanation:

A = (3, 2) , B = ( 6, 9) , C = (10, 6)

Find the lengths using distance formula.

distance = \sqrt{(x_2 -x_1)^2 + (y_2 - y_1)^2}

AB = \sqrt{(6-3)^2 + (9-2)^2}  = \sqrt{9 + 49 } = \sqrt{58}

BC = \sqrt{(10-6)^2 + (6-9)^2}  = \sqrt{16 + 9}  = \sqrt{25}  = 5

AC = \sqrt{(3-10)^2+(2-6)^2}  = \sqrt{49 + 16} = \sqrt{65}

Using Pythagoras theorem :

(Longer \ side)^2 = sum \ of \ square \ of \ two \ other \ sides

Longest side is AC . So we will check if it satisfies Pythagoras theorem :

\sqrt{65} = \sqrt{58} + 5^2\\65 = 58 + 25\\

65 ≠ 58 + 25

So the sides does not satisfy Pythagoras theorem. Hence the triangle is not a right triangle.

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Answer:

D. The range stays the same, but the domain changes

Step-by-step explanation:

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3 years ago
Could you please help me solve this question?
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8 0
2 years ago
What is the slope of the line that passes through the points (9, 5) and (21, 1)?
AleksandrR [38]

Answer:

\displaystyle m = \frac{-1}{3}

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>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Slope Formula: \displaystyle m = \frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (9, 5)

Point (21, 1)

<u>Step 2: Solve for slope </u><em><u>m</u></em>

  1. Substitute in points [Slope Formula]:                                                              \displaystyle m = \frac{1-5}{21-9}
  2. [Fraction] Subtract:                                                                                           \displaystyle m = \frac{-4}{12}
  3. [Fraction] Simplify:                                                                                            \displaystyle m = \frac{-1}{3}
5 0
3 years ago
PLS HELP ........................
lisov135 [29]

Answer:

B

Step-by-step explanation:

First, check to see which graph has a line going through the point (2,3). B and D are the only ones that have lines going through (2,3) (A comes close but it is not quite).

Next, you need to see which line would be parallel to the equation 3x-y=2. When two lines are parallel, they have the same slope. You have to turn that equation into point-slope formula (y=mx+b with m being the slope and b being the y-intercept). First, subtract 3x from both sides. You will then get -y=-3x+2. Then y needs to be alone (right now it has a -1 attached). Divide both sides by -1 to get y=3x-2. The number in front of the x is the slope, in this case, 3 or 3/1 (we do not care about the y-intercept, it will not help us in this problem since we are looking for a line parallel to this equation and so our line will not have the same y-intercept as this other equation). Since the line in parallel to that equation, we know that this line also has a slope of 3/1. Find the line between B and D that has a slope of 3/1, you get B (the line goes up 3 over 1).

3 0
3 years ago
Solve 4x^2 + 43 = 120. Round to the nearest hundredth.
Lady bird [3.3K]
4x² + 43 = 120
4x² = 120 - 43
4x² = 77
x² = 77/4
x² = 19.25
x = ±√19.25
x = ±4.39
<span>
The solutions are ±4.39</span>
4 0
3 years ago
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