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2 years ago

The graph below is used by company 2 to show the average monthly electric cost based on the electricity provider.

Mathematics

2 answers:

defon2 years ago

7 0

Given the bar graph above, the difference in monthly electric cost appear to be great because of the choice of scale.

In scaling, the narrower the intervals of the axis, the larger the graph and the more highlighted the relative difference between the components of the graph.

Conversely, the wider the the intervals of the axis, the smaller the graph and the less highlighted the relative difference between the components of the graph.

Therefore, to make the difference in monthly electric cost appear not to be as great, we widden the intervals on the y-axis.
i.e. 'The interval on the y-axis could be changed to count by 20s.'

NISA [10]2 years ago

5 0

The answer is A) The scale on the y-axis could be changed to 0–150.

Because the y-axis starts at 95, it makes it seem like the change is huge but it's not actually.

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A polygon is graphed on a coordinate grid with (x,y) representing the location of a certain point on the polygon. the polygon is

nasty-shy [4]

Answer: D. if a is greater than 1, the image of the polygon is smaller than the polygon

Step-by-step explanation: MARK ME BRAINLIEST!!!!

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2 years ago

An artist cuts 4 squares with sides of length x ft from the corners of a 12 ft-by-18 ft rectangular piece of sheet metal. She be

ehidna [41]

Answer:

$V = 216x - 60x^2 + 4x^3$

Step-by-step explanation:

The volume V of the fountain is equal to:

V = L*W*h

Where L is the lenght of the fountain, W is the width of the fountain and h is the high of the fountain

We already know that h is equal to x. On the other hand, if we cut a square with side of length x, L and W are calculated as:

L = 18 - 2x

W = 12 - 2x

So, replacing L, W and h on the equation of the volume, we get:

V = (18-2x)*(12-2x)*x

Finally, simplifying the function we get:

$V = ((18*12)+(18*(-2x))+(-2x*12)+((-2x)*(-2x)))*x$

$V = (216-36x-24x+4x^2)*x\\V = (216-60x+4x^2)*x\\V = 216x - 60x^2 + 4x^3$

6 0

2 years ago

Two solutions of different concentrations of acid are mixed creating 40 mL of a solution that is 32% acid. One-quarter of the so

Georgia [21]

In order to construct this equation, we will use the variables:
V to represent mixture volume (40 ml)
C to represent mixture concentration (0.32)
v₁ to represent volume of first solution (40 / 4 = 10 ml)
c₁ to represent concentration of first solution (0.2)
v₂ to represent the volume of the second solution (40 * 3/4 = 30 ml)
c₂ to represent the concentration of the second solution

We know that the total amount of substance, product of the volume and concentration, in the final solution is equal to the individual amounts in the two given solutions. Thus:
VC = v₁c₁ + v₂c₂
40(0.32) = 10(0.2) + 30c

6 0

2 years ago

Read 2 more answers

Rohit visited a pumpkin patch with his family. The table shows the relationship between the weight and price of a pumpkin.

anyanavicka [17]

Answer:

For each additional pound, the price increases $1.50.

Step-by-step explanation:

Lets find the slope of the graph of othe given data.

Let x be the weight of pumpkin in pounds

Let y be the price of the pumpkin in dollars.

For 4 pound pumpkin the price is 6 dollars, so first point is (4,6)

For 8 pound pumpkin the price is 12 dollars, so first point is (8,12)

Find the slope between these points

m = y₂ - y₁ / x₂ - x₁

m = 12 - 6 / 8 -4

m = 6/4

m = 1.5

Which means that for every pound increase in weight, the price of pumpkin increases by 1.5 dollars

3 0

2 years ago

Read 2 more answers

Use the formula t=ln2/k that gives the time for a population, with a growth rate k, to double, to answer the following question.

Arturiano [62]

Answer:

k = 0.005
doubling time ≈ 139 years

Step-by-step explanation:

Matching the form

A = A0·e^(kt)

to the given equation

A = 8·e^(.005t)

we can identify the value of k as being 0.005.

k = 0.005

___

The doubling time is given by the formula ...

t = ln(2)/k = ln(2)/0.005 ≈ 138.63

It will take about 139 years for the population to double.

3 0

2 years ago