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3 years ago

If 640 acres is a square mile, and a mile is 1600 meters, how many square meters is an acre?

Mathematics

1 answer:

Readme [11.4K]3 years ago

8 0

130 is the answer because if you work it out that is ur answers ur welcome

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4.72n - 0.1 = 8 + 0.67n

levacccp [35]

4.72n - 0.1 = 8 + 0.67n

4.72n - 0.67n = 8 + 0.1

4.05n = 8.1

4.05n/4.05 = 8.1/4.05

n = 2

5 0

3 years ago

HELP PLEASE

alexandr1967 [171]

Answer:

I attached the image that has all of the elements. If I missed something, please let me know and I will fix it.

8 0

2 years ago

you go to a grocery store and buy a $2.50 bag of sugar and a sandwich for $1.75. The sales tax for your state is 7%. What is the

Rashid [163]

Answer: My guess is $4.55

Step-by-step explanation:

2.50 + 1.75 = 4.25 (This is the total of everything you bought)

4.25 x 0.07= 0.2975 (0.2975 is 7% of 4.25 but because this is money I will round it to <em>0.30</em>)

(0.30 is the tax so now add it to the original amount)

$4.25 + $0.30 = $4.55

8 0

3 years ago

Given 11, 12, and 16 as the three

Kazeer [188]

Answer:

It is an acute triangle because all the angles are less than 90 degrees.

4 0

3 years ago

Compound interest In Exercise,$3000 is invested in an account at interest rate r,compounded continuously.Find the time required

xenn [34]

Answer:

(a) 8.15

(b) 12.92

Step-by-step explanation:

Given: P = $3000, r = 0.085

$A = Pe^{rt}$

Where

A is the Amount

P is the Principal

r is the rate

t is the time

(a) For the amount to double, A = 2 × P

A = 2 × $3000

A = $6000

$6000 = 3000e^{0.085t}$

$\frac{6000}{3000} = e^{0.085t}$

$2 = e^{0.085t}$

Take $log_{e}$ of both sides

$log_{e}2 = log_{e}e^{0.085t}$

But $log_{e}e = 1$

∴ $ln2 = 0.085t$

$t = \frac{ln2}{0.085}$

$t = \frac{0.693}{0.085}$

t = 8.15

(b) For the amount to double, A = 3 × P

A = 3 × $3000

A = $9000

$9000 = 3000e^{0.085t}$

$\frac{9000}{3000} = e^{0.085t}$

$3 = e^{0.085t}$

Take $log_{e}$ of both sides

$log_{e}3 = log_{e}e^{0.085t}$

But $log_{e}e = 1$

∴ $ln3 = 0.085t$

$t = \frac{ln3}{0.085}$

$t = \frac{1.0986}{0.085}$

t = 12.92

5 0

3 years ago