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3 years ago

10

The number of fish in the lake decreased by 25% between last year and this year last year they were 60 fish in the lake what is

the population this year

1 answer:

Murljashka [212]3 years ago

6 0

Answer:

45 fish this year

Step-by-step explanation:

60 x .25 = 15

60 - 15 = 45

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The volume of a can (right circular cylinder) is 10 cubic feet. the curved surface area is the area of the side. write the curve

natka813 [3]

The volume formula of a cylinder is given as:

V = π r^2 h

So plugging in the value of the volume:

10 ft^3 = π r^2 h

<span>h = 10 / (π r^2) ---> eqtn 1</span>

The formula for the surface area of cylinder is:

s = 2 π r h + 2 π r^2

plugging in eqtn 1:

s = 2 π r [10 / (π r^2)] + 2 π r^2

<span>s = (20 / r) + 2 π r^2 (ANSWER)</span>

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3 years ago

BabaBlast [244]

Answer:

As ΔABC is an <u>isosceles triangle</u>:

⇒ BA = BC
(the dashes on the line segments indicate they are of equal measure)

⇒ ∠BAC = ∠BCA = 55°

⇒ ∠BCA = ∠BAD = 55°

Angles on a <u>straight line</u> sum to 180°

⇒ ∠ADE + ∠EDC = 180°

⇒ 98° + ∠EDC = 180°

⇒ ∠EDC = 82°

As BE intersects AC, the <u>vertically opposite angles</u> are <em>equal</em>:

⇒ ∠BDC = ∠ADE = 98°

⇒ ∠ADB = ∠EDC = 82°

Interior angles in a triangle sum to 180°

⇒ ∠BAD + ∠ADB + ∠ABD = 180°

⇒ 55° + 82° + ∠ABD= 180°

⇒ ∠ABD = 180° - 55° - 82°

⇒ ∠ABD = 43°

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2 years ago

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tax on the original price of a bicycle is charged at 20% of the original price. After tax has been included, Mathew pays $1080 f

kicyunya [14]

Answer:

Original price of bicycle = $864

Step-by-step explanation:

Given:

Rate of tax = 20%

Price pay by Mathew = $1,080

Find:

Original price of bicycle

Computation:

Original price of bicycle = Price pay by Mathew[1 / (1-20%)]

Original price of bicycle = 1,080[1 / (1-20%)]

Original price of bicycle = 1,080[1 / (1-0.2)]

Original price of bicycle = 1,080[1 / (0.8)]

Original price of bicycle = 1,080[1.25]

Original price of bicycle = 1,080[1.25]

Original price of bicycle = $864

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2 years ago

Simplify<br> PLZ HELP QUICKLY

elena-14-01-66 [18.8K]

Answer:

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Step-by-step explanation:

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3 years ago

A clothing store charges $30 for 12 pairs of socks. A student says that the unit price is $0.40 per pair. What is the error? Wha

yulyashka [42]

Their error is that they divided 12 by 30, instead of 30 by 12 in order to get the price per pair

the correct unit price is $2.50 per pair

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3 years ago

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