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wel
3 years ago
10

An orange has 20 fewer calories

Mathematics
1 answer:
Andreyy893 years ago
7 0

Answer:

90 calories in a banana.

Step-by-step explanation:

O = B - 20     where  O is the number calories in an orange and B is a that in  banana.

Also 7B = 9O

From the above   O = 7B / 9 so substituting in the first equation:

7B / 9 = B - 20

7B = 9B - 180

2B = 180

B = 90.

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4 0
3 years ago
What is the slope of the line that contains the points (9,-4) and (1, -5)
vlada-n [284]

Answer:

A. 1/8

Step-by-step explanation:

m = rise/run

m = (y2-y1)/(x2-x1)

m = (-5- - 4)/(1-9)

m = (-5+4)/(-8)

m = (-1)/(-8)

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3 years ago
Read 2 more answers
Five girls decide to share a box of cookies equally. Each girl got for cookies. Right and solve an equation to find out how many
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Step-by-step explanation:

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3 0
3 years ago
(10000*C)/1.05+(10000*C)/1.05^2…..(10000*C)/1.05^13=100<br> Find C?
rosijanka [135]

9514 1404 393

Answer:

  C ≈ 0.00106455765168

Step-by-step explanation:

This is the sum of 13 terms of the geometric series that has 10000C/1.05 as the first term and a common ratio of 1/1.05. The sum S is given by ...

  S = a1(1 -r^n)/(1 -r) . . . . a1 is the first term, r is the common ratio

Using the known values, we have ...

  100 = (10000C/1.05)(1 -1.05^-13)/(1 -1/1.05))

  0.01 = C(1 -1.05^-13)/0.05

  C = 0.0005/(1 -1.05^-13) ≈ 0.0005/0.469679

  C ≈ 0.00106455765168

3 0
3 years ago
A certain forest covers an area of 3700 km. Suppose that each year this area decreases by 5.5%. What will the area be after 15 y
Bess [88]

Answer:

1584 square kilometers.

Step-by-step explanation:

Here's the function I use.

y=a(1-r)^t

a= starting amount

r= rate

t= years

First step: y=3700(1-0.055)^1^5

Second step: =3700(0.945)^1^5

Third step: =1583.72164269

Fourth step: Round to the nearest square kilometer. Since 1583.7 is closer to 1584, you must round up.

Fifth step: The final answer is 1584 km^2

Hope this helps and stay during these crucial times. We'll get through this!

5 0
3 years ago
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