A square field has an area of 10 square miles. What is the approximate length, to the nearest thousandth, of one side of this field?a.2.5 miles
b.3 miles
c.3.162 miles
d.3.612 miles

Answers

Answer 1

Answer: $A=10 [mi^(2)]\n A=s*s=s^(2)\n s= √(A) \n s= √(10) =3.162$

Answer 2

Answer:

Sea is the correct answer

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Carson walked 6 1/2 mi in 2 h. How long will it take him to walk 16 1/4 mi at the same speed? [ ] h

Answers

$6 (1)/(2)mi.......2h \n\n 16(1)/(4)mi........x \n\n \hbox{Introduce the units in the fractions} \n\n\n (13)/(2)mi.........2h \n\n (65)/(4)mi.........x \n\n \hbox{Solve the proportion obtained:} \n\n x= ((65)/(\not4)\not mi*\not2h)/((13)/(2)\not mi) \n\n \hbox{Simplify the units of measurement and 4 with 2 } \n\n\n x=((65)/(2)h)/((13)/(2)) \n\n x= (\not65)/(\not2)h* (\not2)/(\not13) \n\n \hbox{Simplify 65 and 13 throw 13 and 2 with 2} \n\n \boxed{x=5 \ hours}$

Which is greater 3/7 or 0.55

Answers

3/7 as a decimal is .4285 and so on.
This is obviously less than .55

What is the solution to the equation-4x - 14 = 6?

Answers

Answer:

x=-5

Step-by-step explanation:

-4x - 14 = 6

Add 14 to each side

-4x - 14+14 = 6+14

-4x = 20

Divide each side by -4

-4x/-4 = 20/-4

x = -5

Brian invests £1300 into his bank account. He receives 10% per year simple interest.

How much will Brian have after 3 years?

Give your answer to the nearest penny where appropriate.

Answers

Answer:

£1690

Step-by-step explanation:

Amount invested by Brian = £1300

rate of simple interest = 10%

To find money Brian will have after three years

He will have amount invested in bank and interest earned in three years from that amount.

Simple interest for any principal amount p is given by

SI = P*R * T /100

where SI is simple interest earned

T is time period for which simple interest is earned

R is rate of interest

Substituting value of P , R and T we have

SI = 1300*10* 3 /100 = 390

Therefor interest earned will be £390

Total money with Brian after three years = principal amount invested + interest earned in 3 years

= £1300 + £390 = £1690

Ella's book collection contains 12 books, including 3 mysteries.If Ella randomly selects a book to read, what is the probability that it will be a mystery?

Answers

Answer:

3/12 so 25% probabilty

Step-by-step explanation:

Since there are only 3 mystery books, so the probability of Ella picking one is 3/12. Simplified, this would be 1/4, as a decimal, 0.25, and as a percent, 25%.

The area of a square battlefield was 22,500 square miles. How long will it take a group of soldiers to cross the field diagonally at the rate of 3.2 miles/hour? Show work and explain