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3 years ago

7x-49=y Solve for x?

Mathematics

1 answer:

nika2105 [10]3 years ago

4 0

7x - 49 = y
Add 49 to both sides
7x = y + 49
Diving both sides by 7
x =(y + 49)/7

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Tavon has a gift card for $135 that loses $3 for every 30-day period it is not used. He has another gift card for $115 that lose

nlexa [21]

The value of the two gift cards would be the same at 40 30-days

The value of each card be when they have equal value is $15

What can be used to represent value of number of 30 days?

Let us assume that each 30-day period is x, based on the value of each gift is the initial value minus the number of 30-days multiplied by loss in value for every 30-day period

First gift card value=135-3x

Second gift card value=115-2.50x

At the same number of 30-days, their values are the same

135-3x=115-2.50x

135-115=-2.50x+3x

20=0.50x

x=20/0.50

x=40

Value of each gift card at 40 30-days=135-(3*40)

Value of each gift card at 40 30-days=135-120

Value of each gift card at 40 30-days=15

value of each gift card=115-2.50(40)

value of each gift card=115-100

value of each gift card=15

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5 0

2 years ago

if 10 is less than a number is multiplied by 3, the result is equal to 2 times the number. What is the number?

olya-2409 [2.1K]

Hello!

We know that

(x - 10) * 3 = 2x

Distribute the 3

3x - 30 = 2x

Subtract 2x from both sides

x - 30 = 0

Add 30 to both sides

x = 30

The answer is 30

Hope this helps!

4 0

3 years ago

Read 2 more answers

PLEASE HELP! Which one is a statistical question?

monitta

Answer:

Step-by-step explanation:

The others involve opinions, not numbers

- Gage Millar, Algebra 2 tutor

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3 years ago

Which equation represents f(x)?

JulijaS [17]

Function transformation involves changing the form of a function

The equation that represents the function f(x) is $f(x) = \sqrt[3] {x + 6} + 1$

<h3>How to determine the equation</h3>

The parent cube root function is:

$y = \sqrt[3] {x}$

When the function is translated 6 units left, the equation of the function becomes

$y = \sqrt[3] {x + 6}$

Next, the function is translated 1 unit up.

So, the equation of the function becomes

$y = \sqrt[3] {x + 6} + 1$

Express as a function

$f(x) = \sqrt[3] {x + 6} + 1$

Hence, the equation that represents the function f(x) is $f(x) = \sqrt[3] {x + 6} + 1$

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4 0

3 years ago

I need help how do u do this???

Volgvan

49. Straight lines always equally 180 degrees. And the angle directly below P is equivalent to the 131 angle so 180-131=49 (hope that was somewhat explained well enough because angles are hard to explain without directly showing on paper)

7 0

3 years ago

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