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4 years ago

Graph y=-7sin(1/4x)+1

Mathematics

1 answer:

finlep [7]4 years ago

3 0

Answer:

Here is the graph to y=-7sin(1/4x)+1

Step-by-step explanation:

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Solve the equation 8y + 4x=5 for y. Oy=32x + 40 0 y = 40 – 32x o y= J +3 5. o y=

Liono4ka [1.6K]

Answer:

The Last One

Step-by-step explanation:

8y = 5 - 4x

y = 5/8 - (1/2)x

5 0

3 years ago

The average value of two positive numbers is 30% less than one of the two numbers. By which percentage is average value bigger t

Viefleur [7K]

Answer:

75% bigger

Step-by-step explanation:

Let the first number be x and the second be y.

So:

$Average = \frac{x + y}{2}$

And:

$Average = (1 - 30\%) * x$ -----30% less than x

Substitute $Average = (1 - 30\%) * x$ in $Average = \frac{x + y}{2}$

$\frac{x + y}{2} = (1 - 30\%) * x$

$\frac{x + y}{2} = (1 - 0.30) * x$

$\frac{x + y}{2} = 0.70 * x$

$\frac{x + y}{2} = 0.70x$

Cross multiply

$x + y = 0.70x * 2$

$x + y = 1.40x$

Collect like terms

$1.40x - x = y$

$0.40x = y$

Make x the subject

$x = \frac{y}{0.40}$

$x = 2.50y$

So, the average is:

$Average = (1 - 30\%) * x$

$Average = (1 - 30\%) * 2.50y$

$Average =0.70 * 2.50y$

$Average =1.75y$

Rewrite as:

$Average =(1 + 0.75)y$

Express as percentage

$Average =(1 + 75\%)y$

This means that the average is 75% bigger than the second number

6 0

3 years ago

The sides of a rectangle have length x+ 2 and width x -5. Which equation describes the area, A, of the rectangle in terms of x?

Yakvenalex [24]

Answer:

The area in factored form is $A=(x+2)(x-5)$ .

The area in standard form is $A=x^2-3x-10$ .

Step-by-step explanation:

The area of a rectangle is length times width.

So the area here is (x+2)(x-5).

They are probably not looking for A=(x+2)(x-5) because it requires too little work.

They probably want A in standard form instead of factored form.

Let's use foil:

First x(x)=x^2

Outer: x(-5)=-5x

Inner: 2(x)=2x

Last: 2(-5)=-10

---------------------Adding together: $x^2-3x-10$ .

The area in factored form is $A=(x+2)(x-5)$ .

The area in standard form is $A=x^2-3x-10$ .

4 0

3 years ago

Write and equation to find the nth term of each sequence. Then find a24 <br> -4,-9,-14,-19

rjkz [21]

Answer:

arithmetic progression problem

5 0

3 years ago

James has 15 cookies. He want to divide them and give an equal number to his 3 friends. How many cookies should he give each fri

fgiga [73]

Answer:

5 cookies per friend

Step-by-step explanation:

15 divided by 3 is 5. So each friend should get 5 cookies.

4 0

3 years ago

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