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guajiro [1.7K]
2 years ago
7

Can someone please help me on this?

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
5 0

Answer:

The surface area of the green prism is 2.5 times greater than the surface area of the blue prism

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Can someone tell me if im right? PLEASE DONT JUST SAY YES if you don’t know
tia_tia [17]

Answer: You are incorrect, the slope is correct, but the actual y-intercept is 205 ft.

Then the equation is:

y = (-15 ft/min)*x + 205 ft

Step-by-step explanation:

Ok, let's solve this.

We know that water is drained from a reservoir, let's assume that we can model this situation with a linear relation:

y = a*x + b

Where x is time, y is the height of the water in the reservoir, a is the slope (in this case represents how much changes the height of the water in the reservoir in one unit of time) and b is the initial height of the water in the reservoir.

We know that for a line that passes through the points (x₁, y₁) and (x₂, y₂) the slope is:

a = (y₂ - y₁)/(x₂ - x₁)

For this particular case we know that after 2 minutes the height of the water is 175 ft, then we have the point (2 min, 175 ft)

and after 5 minutes (so 7 minutes in total), the height of the water is 100ft, then: (7 ft, 100ft)

Then the slope of this:

a = (100 ft - 175 ft)/(7 min - 2 min) = (-75ft/5min) = - 15 ft/min

Then our line is something like:

y = (-15ft/min)*x + b

To find the value of b, we can use the fact that when x = 2 min, y = 175 ft

So if we replace these two values in the equation we get:

175ft = (-15 ft/min)*2 min + b

175 ft = -30 ft + b

175 ft + 30 ft = b                  

(here is your problem, it seems like you subtracted instead of adding in this part)

205 ft = b

Then the equation is:

y = (-15 ft/min)*x + 205 ft

So you are incorrect (but only for a little bit), you computed wrong the y-intercept.

3 0
3 years ago
What set of reflections would carry triangle ABC onto itself?
soldi70 [24.7K]
I think I could be letter C
3 0
3 years ago
Which of the following values is the solution of x/32=8?<br> a 24<br> b 40<br> c 256<br> d 4
Oduvanchick [21]

Answer:

c) 256

Step-by-step explanation:

https://www.tiger-algebra.com/drill/x/32=8/ This link shows you how it’s done, it’s not some random link, i used the website all the time

4 0
3 years ago
Jose paid $875 on TV. The sales tax was 8%. How much money did he pay in sales tax?
Elis [28]

Answer:

64.81

Step-by-step explanation:

x + .08x = 875

1.08x = 875

x = 810.19 (price of tv)

810.19 x .08 = 64.81

6 0
2 years ago
There is 1/4 ounce of yeast in every 2 1/4 teaspoons of yeast. A recipe for bread calls for 2 teaspoons of yeast. How many ounce
tatyana61 [14]
Here is the set up:

(1/4)/2 = (9/4)/y

Solve for y.
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3 years ago
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