All categories

4 years ago

Just need a check

1 answer:

3 0

Wrong.
If it's a matter of directly proportional, then all you need is one single point.

Look at the first one:

x = 20,000
y = 1,000

y/x = 1,000/20,000 = 0.05

y = 0.05 x

The constant of proportionality is 0.05 (5 percent).

Look at the other points just to check it out and see if it holds water:

x = 1,500
y = 30,000
x/y = 0.05 yes !

x = 2,000
y = 40,000
x/y = 0.05 yes !

It checks out.
The constant of proportionality is 5% for all points in this table.

You might be interested in

An equallon for the depreciation of car is given by y = A * (1 - t) ^ t where y = current value of the car, A = original cost, r

Norma-Jean [14]

Answer: 3 years

Step-by-step explanation:

4 0

3 years ago

Pls hurry I need an answer!!!

nlexa [21]

Answer:

133 degrees

Step-by-step explanation:

if FBE is 47 degrees and is identical to angle CBD, then we can consider

EBD as 180 degrees first and subtract 47 degrees, which is 133 degrees, that is how I got my answer.

hope it helped in any way.

3 0

3 years ago

For the linear function (x)=7x-2, which of the following is true?

Volgvan

Answer:

Correct option is : 1) It has a slope of 7 and a y-intercept of -2.

Step-by-step explanation:

The given function is :

$f(x)=7x-2$ .....1

The general form of equation of a linear function is given by :

$y=mx+c\\$ .....2

where, y is the dependent variable, x is the independent variable, m is the slope of the function and c is the y-intercept.

On comparing equations 1 and 2, we get:

m = 7,c = -2

Thus, we can conclude that : Slope of equation is 7 and y-intercept is -2.

Thus, only option 1 satisfies the given solution.

6 0

4 years ago

What is the value of the expression shown below?

melisa1 [442]

6 4/9, hope this helps tell me if you need and explanation

3 0

4 years ago

The value of a collector’s item is expected to increase exponentially each year. The item is purchased for $500. After 2 years,

Anika [276]

Answer:

Option 2 is correct.

Step-by-step explanation:

Actual price = $500

After 2 years the worth of item is increased to = $551.25

We need to find the equation that represents y, the value of the item after x years.

According to given information the equation can be of form

$y=500(r)^x$

where r represents the growth and x represents the number of yeras.

We need to find the value of r that represents the growth

The value of y = 551.25, and value of x = 2

Putting values and solving:

$y=500(r)^x\\551.25 = 500(r)^2\\551.25/500 =(r)^2\\1.1025 = (r)^2\\Taking square root on both sides\\\\\sqrt{1.1025}=\sqrt{(r)^2}\\ => (r) = 1.05\\$

Putting value of r in the equation

$y=500(r)^x$

$y=500(1.05)^x$

So Option 2 is correct.

5 0

4 years ago