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3 years ago

6x-y in a verbal expression

Mathematics

1 answer:

Zolol [24]3 years ago

8 0

Answer:

six x minus y.

Step-by-step explanation:

In changing it to verbal expression, you are essentially changing all the signs into words. Write it like how you will say it.

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A video game club charges a fixed annual membership fee of $20 and $2 per video game rented. Let f(n) represent the total annual

alexdok [17]

Answer: $f(n)=2n+35$

Step-by-step explanation:

Given : Let f(n) represent the total annual cost of renting n video games.

A video game club charges a fixed annual membership fee of $20 and $2 per video game rented.

Then the total annual cost is given by :-

$f(n)=20+2n$

If the membership was increased by $15 the next year , then the total cost in next years will be :-

$f(n)=20+2n+15\\\\\Rightarrow\ f(n)=2n+35$

Hence, the function best represents the relationship between f(n) and n if the membership was increased by $15 the next year :

$f(n)=2n+35$

6 0

4 years ago

The new number, 550, is 200 more than the original number. What is the approximate percent change?

Andrews [41]

Answer: I believe the answer is b. 55%

Step-by-step explanation:

200/ (550-200) * 100

7 0

3 years ago

What is the Volume of the square pyramid? (Round to the nearest tenth as needed)

Orlov [11]

<h3>given:</h3>

base= 25 mm

height= 28 mm

the volume of the square pyramid.

<h3>solution:</h3>

$volume = {a}^{2} \frac{h}{3}$

$v = {25}^{2} \frac{28}{3}$

$v = 5833.33333 {mm}^{3}$

$v = 5833.3 {mm}^{3}$

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2 years ago

3. The box-and-whisker plot below shows the heights,in inches, of the students in a 7th grade class.What percentage of the heigh

Fantom [35]

(3) 62.5% cuz u take the total number of the students and u divide it by the number of students between 60 to 65

7 0

3 years ago

Graph f(x) =-2x^+16x-30 by factoring to find the solutions, then find the coordinates of the vertex, and the axis of symmetry. I

fredd [130]

Answer:

Observe attached image

Function zeros:

(3, 0), (5, 0)

Vertex:

(4, 2)

Axis of symmetry:

 $x =4$ 

Step-by-step explanation:

First factorize the function

$f (x) = -2x ^ 2 + 16x-30$

Take -2 as a common factor.

$-2(x ^ 2 -8x +15)$

Now factor the expression $x ^ 2 -8x +15$

You must find two numbers that when you add them, obtain the result -8 and multiplying those numbers results in 15.

These numbers are -5 and -3

Then we can factor the expression in the following way:

$f (x) = -2(x-5)(x-3)$

The quadratic function cuts the x-axis at x = 3 and at x = 5.

Now we find the coordinates of the vertex.

For a function of the form $ax ^ 2 + bx + c$ the x coordinate of its vertex is:

$x = \frac{-b}{2a}$

In the function $f (x) = -2x ^ 2 + 16x-30$

$a = -2\\b = 16\\c = 30$

Then the vertice is:

$x = \frac{-16}{2(-2)}\\\\x = 4$

The y coordinate of the symmetry axis is

$y = f (4) = -2 (4) ^ 2 +16 (4) -30\\\\y = 2$

The axis of symmetry is a vertical line that cuts the parabola in two equal halves. This axis of symmetry always passes through the vertex.

Then the axis of symmetry is the line

$x = 4$

The solutions and the vertice written as ordered pairs are:

Function zeros:

(3, 0), (5, 0)

Vertex:

(4, 2)

6 0

3 years ago