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Sav [38]
2 years ago
13

One fish, two fish, red fish... got eaten by a bigger fish! someone has been eating all the little fish in the pond! At the begi

nning of the day there were 90 little fish in the pond. At the end of the day there were 52 little fish in the pond. Find the percent decrease from the beginning of the day to the end of the day. Round to the nearest percent.
A).40% C).42%
B).41% D).43
Mathematics
2 answers:
Ede4ka [16]2 years ago
7 0

Answer:

i think its C but idrk

Step-by-step explanation:

tatyana61 [14]2 years ago
5 0
I believe it’s c) 42% but I need someone to double check it
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The question is in the screenshot
Sidana [21]

Answer:

b. -36/77

Step-by-step explanation:

As 0 < x < \pi/2 => tan x > 0

As 0< y <  \pi/2 => tan y > 0

We have the formula:

  • \frac{1}{sin^{2}x } =1 + cot^{2}x => \frac{1}{(8/17)^{2} } = 1+cot^{2}x => cot^{2} x=225/64

As tan x = 1/(cotx) => tan^{2}x = \frac{1}{cot^{2}x} =\frac{1}{225/64} = \frac{64}{225}

As tan x > 0 => tan x = 8/15

  • \frac{1}{cos^{2}y } = 1+tan^{2}y => \frac{1}{(3/5)^{2} } = 1 + tan^{2} y => tan^{2}y=\frac{16}{9}

As tan y > 0 => tan y = 4/3

As tan (x-y)= \frac{tan x - tan y}{1+ tanx * tany} =\frac{(8/15)-(4/3)}{1+(8/15)*(4/3)} = \frac{-36}{77}  

8 0
3 years ago
Please answer correctly! I will mark you as Brainleist!
kiruha [24]

Answer:

V ≈ 1847.26

Step-by-step explanation:

<u>Circular Cone Formulas in terms of radius r and height h:</u>

The volume of a cone:

V = (1/3)πr2h

Slant height of a cone:

s = √(r2 + h2)

Lateral surface area of a cone:

L = πrs = πr√(r2 + h2)

The base surface area of a cone (a circle):

B = πr2

The total surface area of a cone:

A = L + B = πrs + πr2 = πr(s + r) = πr(r + √(r2 + h2))

Therefore, the solution V = πr 2h / 3 = π·142·9/  3 ≈ 1847.25648

4 0
3 years ago
Jessica makes overtime pay when she works more than 40 hours in a week. So far this week she has worked 29 hours. She will conti
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Answer:11 more hours

Step-by-step explanation:

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3 years ago
Plzzzzzzzzzzzzzzzzzzzzzz neeed help dew nowwwwwwwwwwwwwwwwwwwwwwwwwww
vampirchik [111]

Answer:

64 teachers

Step-by-step explanation:

We can use ratios to solve

14 students   896 students

----------------- = -------------

1 teacher          x teachers

Using cross products

14 * x = 896*1

Divide each side by 14

14x/14 = 896/14

x =64

4 0
3 years ago
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