All categories

3 years ago

Is y = 3x + 5 proportional and why?

1 answer:

8 0

No it is not proportional because y=3x and if you replace x with 2x y=3(2x) = 2(3x) = 2y
y= 2y BUT if you replace x with 2x in y= 3x + 5 youll get 2y for y meaning, its not proportional.

You might be interested in

If g(3) = 5 and g(-1) = 5, explain why g(x) does not have an inverse.

Alenkinab [10]

g(x) cannot have an inverse because it gives the same output value for two individual input values.

In this case, g(x) is 5 when x is both 3 and -1. Hence, g(x) does not have an inverse.

Let me know if you have any questions, thanks!

4 0

3 years ago

I will mark brainliest to whoever dose it correct<br>I need help rn please help meee

GalinKa [24]

Answer:

The two numbers are 18 and 42

Step-by-step explanation:

let the two numbers = x and y

Their sum: x + y = 60 ------ (1)

Also, dividing the larger by the smaller (partition = 2 and remainder = 6).

Let the larger number = y

$\frac{y}{x} = 2\frac{6}{x} \\\\\frac{y}{x} = \frac{2x +6}{x} \\\\y = 2x + 6\ \ ----(2)$

Substitute the value of y into equation (1)

x + (2x + 6) = 60

x + 2x + 6 = 60

3x + 6 = 60

3x = 60 - 6

3x = 54

x = 54 / 3

x = 18

y = 2x + 6

y = 2(18) + 6

y = 36 + 6

y = 42

The two numbers are 18 and 42

5 0

2 years ago

The sail of a boat is in the shape of a right triangle. Which expression shows the height, in meters, of the sail?

muminat

Answer:8(cos35)

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Mrs. Smith took her family and friends to the movies. There was a total of 15 people. Child tickets cost 5$ and adult tickets co

SCORPION-xisa [38]

Answer: children= 8, adult= 7

Step-by-step explanation:

Let the number of children be x

Let the number of adults be y

There was a total of 15 people. This can be represented as:

x + y = 15 .......... equation i

Child tickets cost 5$ and adult tickets cost 10$. She then spent a total of 110$. This can be represented as:

5x + 10y = 110 ............. equation ii

Combine both equations

x + y = 15 ........... equation i

5x + 10y = 110 .......... equation ii

Multiply equation I by 5

Multiply equation ii by 1

5(x + y = 15)

1(5x + 10y = 110)

5x + 5y = 75 .......... equation iii

5x + 10y = 110 ........ equation iv

Subtract equation iv from iii

-5y = -35

y = 35/5

y = 7

Number of adults is 7

Since x + y = 15

x = 15 - 7

x = 8

Number of children is 8

3 0

3 years ago

Using V = lwh , find an expression in factored form for the volume of this prism. Explain the general steps you used to arrive a

marysya [2.9K]

Answer:

V = 6x²(2x - 5)

Step-by-step explanation:

Factor the dimensions, that is

24x² + 6x = 6x(4x + 1) ← common factor of 6x

x² - x = x(x - 1) ← common factor of x

The product lwh can now be written

V = $\frac{6x(4x+1)}{x-1}$ × (2x - 5) × $\frac{x(x-1)}{4x+1}$

Cancel the factors (4x + 1) and (x - 1) from the numerators/ denominators

V = 6x × x × (2x - 5) = 6x²(2x - 5) ← in factored form

4 0

3 years ago

Read 2 more answers