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ryzh [129]
2 years ago
13

The surface of a pond is being covered by oil leaking from a pipeline. The amount of surface area covered by the oil is doubling

each day. At this rate, the surface of the pond will be completely covered with oil at the end of the twenty-fifth day. What fraction of the surface area of the pond will be covered by oil at the end of 20 days?
Please answer it step-by-step. Thx
Mathematics
1 answer:
fomenos2 years ago
7 0

Answer:

Count

Step-by-step explanation:

Suppose that each day double 2, second day , will double 4, and for third day it's 16, etc.

For like those questions, just count.

Those questions are very simple, but other questions not like those, is not too simple.

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A poster is regularly priced at $19.98 is on sale for 40% off. What is the sale price?
Leona [35]

Answer:

$11.99

Step-by-step explanation:

19.98x.4=7.99

19.98-7.99=11.99

4 0
3 years ago
During a sale at the market, steaks sold for $4 and watermelon sold for $3.50. Luca spent $22 and bought a total of 6 steaks and
sesenic [268]

Answer:

Luca bought 2 steaks and 4 watermelons.

Step-by-step explanation:

During the sale, steaks sold for $4 and watermelon sold for $3.50.

Let the number of steaks Luca bought be represented as x and the number of watermelons Luca bought be represented as y.

Luca spent $22 in total.

That means that the number of steaks that Luca bought multiplied by the price of each steaks plus the number of watermelons that Luca bought multiplied by the price of each watermelon will give $22.

In other words:

(4 * x) + (3.5 * y) = 22__________________(1)

Luca bought a total of 6 steaks and watermelons. This means that:

x + y = 6____________________________(2)

We have two simultaneous equations.

4x + 3.5y = 22 ___________(1)

x + y = 6 _______________(2)

From (2):

x = 6 - y

Putting this back in (1):

4(6 - y) + 3.5y = 22

24 - 4y + 3.5y = 22

24 - 0.5y = 22

=> 24 - 22 = 0.5y

2 = 0.5y

=> y = 2/0.5 = 4

Hence:

x = 6 - 4 = 2

Luca bought 2 steaks and 4 watermelons.

7 0
3 years ago
Drawing Conclusions: Geometry
leonid [27]
AE and EC are congruent because it's given that E is the midpoint of AC. However, DE and EB cannot be congruent because it does not state that point E is the midpoint of DB.

You cannot assume that all the triangles DEA, AEB, BEC, and CED are all congruent just from being given that E is the midpoint of AC. You would need to be given other information such as "Quadrilateral ABCD is a parallelogram. "
8 0
3 years ago
Can y'all help me please because I don't get it
pishuonlain [190]
Ok so here we go!
a steam and leaf plot is very simple to figure out
for example if a number was 6|4 it would equal 64
so for your first question range equals the biggest number subtracted by the smallest number so in your case it would be 28-55
which equals 27
5 0
3 years ago
What is 25 times 4. Just Asking For My First Brainly Question
mash [69]

Answer: 100

Step-by-step explanation:

25*4 = 100

4 0
4 years ago
Read 2 more answers
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