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SIZIF [17.4K]
3 years ago
8

PLEASE SAVE ME FROM FAILING ( PICTURE BELOW)

Mathematics
1 answer:
Grace [21]3 years ago
3 0

Answer:

5x + 10 + 2x - 5 = 180

7x + 5 = 180 \\  - 5 \:  \:  \:  \:  \:  - 5

7x = 175

\frac{7x}{7}  =  \frac{175}{7}

x = 25

5x + 10

5(25) + 10

125 + 10 = 135

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Write an equation of the line that passes through point (5,6) and has a slope of 2.
qwelly [4]

y = - \frac{2}{5} x - 2

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

rearrange 2x + 5y = 10 into this form

subtract 2x from both sides  

5y = - 2x + 10 ( divide all terms by 5 )

y = - \frac{2}{5} x + 2 ← point- slope form with slope m = - \frac{2}{5}

Parallel lines have equal slopes hence  

y = - \frac{2}{5} x + c is the partial equation of the parallel line

to find c, substitute ( 5, - 4 ) into the partial equation

- 4 = - 2 + c ⇒ c = - 4 + 2 = - 2

y = - \frac{2}{5} x - 2 ← equation of parallel line




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4 years ago
Solve<br>2 + 2y + z=4<br>3x-4y- 2z=2<br>5x+3y+5z=-1​
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8 0
3 years ago
The aspect ratio is used when calculating the aerodynamic efficiency of the wing of a plane. For a standard wing area, the
Lesechka [4]

Answer:

Y=s^2/36 and y=5.7;14.3 ft

Step-by-step explanation:

A(s)=s2/36 is the function. A(s) is the aspect ratio, while s is the wingspan. A(s) = 5.7 if one glider has an aspect ratio of 5.7. We'd want to know the glider's wingspan. By replacing A(s) with Y, we get the following equation system:

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2 years ago
A navigator on a boat measures the angle between the course of the boat and the lighthouse on shore to be 70 degrees. After the
SCORPION-xisa [38]

hi pls where can I get physics questions on checking the correctness of an equation using dimensional analysis

3 0
3 years ago
Find the third side in simplest radical form:
larisa [96]

Answer:

x = √53

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

Equality Properties

<u>Trigonometry</u>

  • [Right Triangles Only] Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

<u>Step 1: Define</u>

We are given a right triangle. We can use PT to solve for the missing length.

<u>Step 2: Identify Variables</u>

Leg <em>a</em> = 6

Leg <em>b</em> = <em>x</em>

Hypotenuse <em>c</em> = √89

<u>Step 3: Solve for </u><em><u>x</u></em>

  1. Set up equation:                    6² + x² = (√89)²
  2. Isolate <em>x</em> term:                        x² = (√89)² - 6²
  3. Exponents:                             x² = 89 - 36
  4. Subtract:                                 x² = 53
  5. Isolate <em>x</em>:                                 x = √53
5 0
3 years ago
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