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4 years ago

Evaluate 5x-x/y when x=4 and y=2

Mathematics

1 answer:

xz_007 [3.2K]4 years ago

7 0

Substitute the given values for x and y into the expression

(5 × 4 ) - $\frac{4}{2}$ = 20 - 2 = 18

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What is the common difference between the elements of the arithmetic sequence below?

ASHA 777 [7]

It would be -4.5 you can get that subtracting each element from the next one.-22.5-(-18)=-22.5+18=-4.5

4 0

3 years ago

Read 2 more answers

Pls help 10 points I need question 3

Dominik [7]

Answer:

here is your answer

hope it help you

5 0

3 years ago

which statements are true about the graph of the function f(x) = 6x – 4 x2? check all that apply. the vertex form of the functio

Brut [27]

Answer:

The vertex of the function is the point $(-3,-13)$

The graph increase over the interval--------> (-3,∞)

Step-by-step explanation:

we have

$f(x)=6x-4+x^{2}$

1) Convert to vertex form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$f(x)+4=x^{2}+6x$

Complete the square. Remember to balance the equation by adding the same constants to each side

$f(x)+4+9=x^{2}+6x+9$

$f(x)+13=x^{2}+6x+9$

Rewrite as perfect squares

$f(x)+13=(x+3)^{2}$

$f(x)=(x+3)^{2}-13$ -----> function in vertex form

2) Find the vertex

The vertex of the function is the point $(-3,-13)$

3) Find the axis of symmetry

we know that

In a vertical parabola, the axis of symmetry is equal to the x-coordinate of the vertex

The x-coordinate of the vertex in this problem is equal to $x=-3$

therefore

the equation of the axis of symmetry is $x=-3$

4) Find the increase-decrease intervals

The graph increase over the interval--------> (-3,∞)

The graph decrease over the interval--------> (-∞,-3)

see the attached figure to better understand the problem

5) Find the x-intercepts of the function

we know that

the x-intercepts are the values of x when the value of the function is equal to zero

In this problem the x-intercepts are

$(-6.61,0)$ and $(0.61,0)$

The function cross the x-axis twice

see the attached figure

5 0

4 years ago

Read 2 more answers

What is 4(0.5x + 2.5y - 0.7y - 1.3y + 4) simplified?

Maslowich

4(0.5x + 2.5y - 0.7y - 1.3y + 4)
multiply 4 by all in parentheses

(4*0.5x)+(4*2.5y)+(4*-7y)+(4*-1.3y)+(4*4
=2x+10y-28y-5.2y+16

combine like terms
=2x-23.2y+16

ANSWER:
Expression simplified 2x-23.2y+16

Hope this helps! :)

4 0

3 years ago

Keith and Michelle went out to dinner. The total cost of the meal, including the tip, came to $53.70. If the combined tip came o

snow_tiger [21]

Answer:

22.05$ Each

Step-by-step explanation:

53.70-9.60=44.1

44.1 divided by 2= 22.5

3 0

3 years ago