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galben [10]
3 years ago
15

State whether the relationship between x and y in y=4x-5 is proportional or not

Mathematics
1 answer:
mart [117]3 years ago
5 0
The answer is "No they are not proportional" since the line y = 4x-5 doesn't go through the origin. Put another way, the equation is not in the form y = k*x for some fixed value k.
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help me please !! find the domain and range of the function represented by the graph. determine wether the domain is discrete or
katrin [286]

Answer:

Domain is the whole R and the range is R+. The domain is continuous

5 0
3 years ago
Find the area of the head using each persons method. Show your reasoning.
diamong [38]

The area of the hexagonal head using each persons (Andre & Lin) method is;

<u><em>Total Area using Lin's method = 93.6 ft²</em></u>

<u><em>Total Area using Andre's method = 93.6 ft²</em></u>

  • A) Lin's Method; From division of polygons , we know that a regular hexagon can be divided into 6 equilateral triangles.

From the image, a side of the hexagon is 6 inches. This means that all sides of each triangle will be also 6 inches.

Formula for area of a triangle = ¹/₂(base x height)

We see a perpendicular distance spanning from one end of the hexagon to the other end passing through the centre of the hexagon. It passes 2 triangles.

Thus, the height of one triangle = 10.4/2 ft = 5.2 ft

Area of one triangle =  ¹/₂ × 6 × 5.2 = 15.6 ft²

Thus, Area of hexagon = area of 6 triangles = 6 × 15.6 = 93.6 ft²

  • B) Andre's method;

Let us first find the area of the rectangle;

Area of rectangle = length × width

Area of rectangle = 10.4 × 6 = 62.4 ft²

For the rectangle, we know three sides now which are;

10.4 ft, 6 ft, 6 ft but we don't know the height and as such we will use heron's formula to get the area of one triangle;

A = √s((s - a)(s - b)(s - c))

where; a,b and c are the 3 sides of the triangle

s = (a + b + c)/2

Thus; s = (10.4 + 6 + 6)/2 = 11.2 ft

Thus;

A = √11.2((11.2 - 10.4)(11.2 - 6)(11.2 - 6))

A = 15.6 ft²

There are 2 triangles and so Area of 2 triangles =2 × 15.6 = 31.2 ft²

Thus;

Total Area = 62.4 ft² + 31.2 ft²

Total Area = 93.6 ft²

Read more at; brainly.com/question/15424654

6 0
2 years ago
You earn $35 for washing 7 cars. How much do you earn for washing 4 cars?
alexandr1967 [171]
43.75 , first divide 35 and 7 witch will give you 8.74 then multiply 8.75 by 4  
4 0
4 years ago
Read 2 more answers
If f(x)=x/2-3and g(x)=3x^2+x-6 find (f+g) (x)
olga_2 [115]

Answer:

3x^2+1.5x-9

Step-by-step explanation:

(f+g) (x)

=f(x)+g(x)

=x/2-3+3x^2+x-6

=3x^2+1.5x-9

3 0
4 years ago
(–9) • (8) – (9) • (–9)
elena-s [515]

Answer:

10

Step-by-step explanation:


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4 years ago
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