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2 years ago

Use the drawing tools to form the correct answer on the provided graph

Mathematics

1 answer:

Anna11 [10]2 years ago

4 0

Line graph is the only way i know to even come close to getting tha right

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Graph x≥−1, plz amswer. from khan

Mrrafil [7]

Draw a number line. Plot -1 on the number line and make this a filled in circle. Shade to the right of the filled in circle to indicate the set of values x such that $x \ge -1$

So x could be -1 or it could be larger. The fact that x = -1 is possible is why we have a closed or filled in circle (instead of an open hole) at this endpoint.

7 0

4 years ago

An observer (O) spots a bird flying at a 35° angle from a line drawn horizontal to its nest. If the distance from the observer (

romanna [79]

Answer:

The correct option is;

17,202 feet

Step-by-step explanation:

The distance from the observer to the bird is given as 21,000 ft

The angle between the line of flight of the bird to the horizontal line from its nest = 35°

With the triangle BNO = A right triangle, we have;

The distance of the bird from its nest = Adjacent leg of the right triangle

The distance of the observer from the bird = Hypotenuse length

Which by trigonometric relations gives;

$cos(35 ^{\circ} )= \dfrac{Adjacent\ leg \ length}{Hypotenuse \ length} = \dfrac{Distance\ of \ bird \ from \ its \ nest}{21,000}$

21,000×cos(35 degrees) = The distance of the bird from its nest = 17,202.2 feet ≈ 17,202 feet.

6 0

4 years ago

Solve using the quadratic formula. 3x^2+2x+1=0

Sav [38]

4.3 Solving 3x2-2x-1 = 0 by the Quadratic Formula .

According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :

- B ± √ B2-4AC
x = ————————
2A

In our case, A = 3
B = -2
C = -1

Accordingly, B2 - 4AC =
4 - (-12) =
16

Applying the quadratic formula :

2 ± √ 16
x = —————
6

Two real solutions:

x =(2+√16)/6

or:

x =(2-√16)/6

7 0

4 years ago

-3x-3y=3 ,y=-5x-17 solving systems by substitution

Law Incorporation [45]

Answer:

(-4, 3)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Solving systems of equations by substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

-3x - 3y = 3

y = -5x - 17

Step 2: Solve for x

Substitution

Substitute in y: -3x - 3(-5x - 17) = 3
Distribute -3: -3x + 15x + 51 = 3
Combine like terms: 12x + 51 = 3
Isolate x term: 12x = -48
Isolate x: x = -4

Step 3: Solve for y

Define equation: y = -5x - 17
Substitute in x: y = -5(-4) - 17
Multiply: y = 20 - 17
Subtract: y = 3

8 0

3 years ago

Last year, a lighting supplier called Bright Idea shipped a total of 37,220 lamps to its distributors. This year, the supplier s

fredd [130]

Answer:

25%

Step-by-step explanation:

Given data

Last years shipment= 37220 lamps

These years shipment= 29776 lamps

% Decrease= Initial-Final/Initial*100

% Decrease= 37220-29776/29776*100

% Decrease= 7444/29776*100

% Decrease= 0.25*100

% Decrease= 25%

Hence the decrease is 25%

7 0

3 years ago