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3 years ago

81 is what percent of 90?

Mathematics

2 answers:

Pie3 years ago

5 0

Answer:

72.9

Step-by-step explanation:

hope it helps you out

please mark brainiest

Fudgin [204]3 years ago

3 0

Answer:

Step-by-step explanation:

Follow the below steps to calculate what percent is 81 out of 90 or how to write 81/90 as a percentage.

Step 1: Percentage Formula = Number1/Number2 x 100

Step 2: plugin the 81 and 90 to the percentage formula and we get 81/90 x 100 = 90%

hope this helps!

(can u mark brainliest)

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the population of a town grows at the rate of 3 percent each year in 2010, the town had a population of 250000. what is the popu

Ulleksa [173]

Answer:

335,979 people (in Year 2020)

Step-by-step explanation:

Initial Population (Year 2010) = 250,000

Rate of Growth = 3% = 3/100 = 0.03

We want the population of the town in Year 2020 (at this rate). That is 10 years from now.

The formula for compound growth is:

$F=P(1+r)^t$

Where

F is the future value (in year 2020)

P is the present value (250,000)

r is the rate of increase per year (0.03)

t is the time in years (t = 10)

Lets substitute and find the value:

$F=P(1+r)^t\\F=250,000(1+0.03)^{10}\\F=250,000(1.03)^{10}\\F=335979.09$

Rounded, that would be:

335,979 people (in Year 2020)

4 0

3 years ago

Hey guys I need some help; I would really appreciate it :)

Masja [62]

Their answer is correct so you need explanation?

4 0

3 years ago

You need to cover the playground of a child development center with mulch. The playground is 125 feet long and 60 feet wide. You

xz_007 [3.2K]

Given:
Length of the playground: 125 ft
Width of the playground: 60 ft
Depth of the mulch: 6 inches

Convert ft and inches to yards

1 yard = 3 feet

Length: 125ft/3ft = 41.67 yd
Width: 60ft/3ft = 20 yd

1 ft = 12 inches
Depth: 6 inches * 1ft/12inches = 6ft/12 = 1/2 ft
Depth: 0.5 ft * 1yd/3ft = 0.5yd/3 = 0.17 yd

Volume = Length * Width * Depth
V = 41.67yd * 20yd * 0.17yd
V = 141.68 yd³

V = 125ft * 60ft * 0.5ft
V = 3,750 ft³

1 cubic yard = 27 cubic feet

3,750ft³ * 1yd³/27ft³ = 3,750 yd³ / 27 = 138.89 or 139 yd³ LETTER B.

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3 years ago

Week

aleksandrvk [35]

Answer:

i think 4 but you try my answer is not or correct

6 0

3 years ago

I will appreciate it if you can help me out with this

xz_007 [3.2K]

Since the temperature dropped over 2 weeks that means there probably was a -6 Celsius drop in one week. My eqution is -12 divided by 2 equals -6.

4 0

3 years ago

81 is what percent of 90?​

81 is what percent of 90?