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3 years ago

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Mathematics

1 answer:

alukav5142 [94]3 years ago

8 0

1. substitute x with 1,
y=35+25=60 its correct
substitute x with 2
y= 70+25=95 its correct
yes i get the y value from the table
2. the cost of repair rates as the amount of repair time increases.
3. the slope is gradient. the formula is to take y1-y2/x1-x2=9-6/1-0=3 3 is the slope. y-intercept is 6 because when the line touches the y axis, the the x value is 0. good luck!! if you need more help, feel free to comment here!!

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A number consist of 2 digits whose sum is 8, If 8 is subtracted from the number, the digits interchange their place. The number

Novay_Z [31]

Step-by-step explanation:

Let's say the two digit number is 10x + y, where x is the first digit and y is the second digit.

The sum of the digits is 8:

x + y = 8

If 8 is subtracted from the number, the digits switch place.

10x + y − 8 = 10y + x

Simplify the second equation:

9x − 8 = 9y

Substitute from the first equation.

y = 8 − x

9x − 8 = 9 (8 − x)

9x − 8 = 72 − 9x

18x = 80

x = 4.444

There's a problem. x isn't an integer. Are you sure you copied the problem correctly? Perhaps you meant if 18 is subtracted from the number, the digits switch place.

9x − 18 = 9 (8 − x)

9x − 18 = 72 − 9x

18x = 90

x = 5

y = 8 − x

y = 3

So the number is 53.

8 0

3 years ago

Read 2 more answers

Please help!! If f (x) = e^x sin x, then f’ (x) =

shusha [124]

Answer:

$f'(x) = {e}^{x}( \sin x + \cos x )$

Step-by-step explanation:

$f(x) = {e}^{x} \sin x \\ \\ f'(x) = \sin x \frac{d}{dx} {e}^{x} + {e}^{x} \frac{d}{dx} \sin x \\ \\ f'(x) = \sin x \: {e}^{x} +{e}^{x} \cos x \\ \\ f'(x) = {e}^{x}( \sin x + \cos x )$

5 0

3 years ago

David made a popcorn snack. he mixed five eight of popcorn with half gallon of dried apple rungs. did he use more dried apple ri

Fantom [35]

JUST DIVIDE ALL UR NUMB RS AND SEE WHICH IS THE HIGHEST

6 0

3 years ago

your bike lock has 4 digits numbered 0 to 9. find the total number of possible outcomes for the bike lock

Ann [662]

Answer:

There could be many, my estimate would be around 100.

Step-by-step explanation:

It may sound exaggerated but it can be.

6 0

3 years ago

Recycled CDs, Incorporated, offers a choice of 5 used CDs for $27, with each additional CD costing $5. Write a cost function

notka56 [123]

A function assigns the values. The cost of 6 CDs will be $32.

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

Given that the Recycled CDs. Incorporated, offers a choice of 5 used CDs for $27, with each additional CD costing $5. Therefore, a cost function for purchasing 5 or more CDs, where x represents the number of CDs over 5 can be written as,

C(x) = $27 + $5(x)

Now, if 6 CDs are purchased then the number of CDs that are more than 5 is 1. therefore, the cost of 6 CDs will be,

C(1) = $27 + $5(1)

= $27 + $5

= $32

Hence, the cost of 6 CDs will be $32.

Learn more about Function here:

brainly.com/question/5245372

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8 0

2 years ago