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Stolb23 [73]
4 years ago
9

During a 4-month-long drought, the water level in a lake changed by

Mathematics
2 answers:
Agata [3.3K]4 years ago
8 0

Answer:

-7/8

Step-by-step explanation:

i did the 3.15 Unit Test

                                       

Andreyy894 years ago
7 0
In 4 months, the water level changed in the lake by -3.5 ft.
We want to know the change in one month knowing that the change is the same for all months.
To do that, we can simply do a cross multiplication as follows:
change per month=(1*-3.5)/4 = -0.875 ft
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3 years ago
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Two phone companies one is 11/+.16/ min And another is 20+.11/min How many minutes will make both equal amounts
Ilia_Sergeevich [38]

Answer:

Company one charges $11 + $0.16 per min.

Then if you talk for x minutes, the cost will be:

C₁(x) = $11 + ($0.16 per min)*x

For company two, the prize is $20 + $0.11 per min, and if yo talk for x minutes, the cost will be:

C₂(x) = $20 + ($0.11 per min)*x

Now we want to find the value of x, the number of minutes, such that the cost is the same with both companies.

C₁(x) = C₂(x)

$11 + ($0.16 per min)*x = $20 + ($0.11 per min)*x

($0.16 per min)*x - ($0.11 per min)*x = $20 - $11

($0.05 per min)*x = $9

x = $9/($0.05 per min) = 180 mins

If you speak for 180 minutes, the cost is the same in both companies.

5 0
3 years ago
Regardless of how the graph is oriented in the standard
olasank [31]

Answer:

the answer is j because it's impossible to draw a line through the center of any parallelogram that divides the figure into two equal halves that are mirror images of each other

4 0
3 years ago
Why do you think Priya and Noah may have found different measurements for the same desk?
9966 [12]

Answer:

Priya used cm to measure the desk while Noah used inch to measure the desk that is why they found different measurement for same desk.

5 0
3 years ago
A polygon has an interior angle sum of 9000. How many sides does it have
SSSSS [86.1K]

Answer:

52

Step-by-step explanation:

The sum of the interior angles of a polygon is

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Here the sum = 9000°, thus

180° (n - 2) = 9000° ( divide both sides by 180° )

n - 2 = 50 ( add 2 to both sides )

n = 52

7 0
3 years ago
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