1647. 1 hour=60 minutes. John can mow 247 square feet per minute, so he can mow 60*247=14820 square feet per hour. 1 yard=3 feet, so 1 square yard =3^2=9 square feet, so in the same duration of time, John can mow 14820/9=1647 square yards (approximately) per hour.

6 0

4 years ago

14 (OM) Radicals and Estimation (2 pts) Without a calculator, estimate the radical and explain how you estimated. Then using a c

Irina-Kira [14]

Q) Without a calculator, we must estimate the value of the following expression:

$3-\sqrt[]{38}.$

A) I estimate 3 - √38 to be approximately -3.2.

First, we estimate the value of √38. √38 is between √36 and √49, but close to √36 (since 38 is closer to 4 than it is to 9). Since √36 is 6, √38 is probably something like 6.1 or 6.2. Filling 6.2 in the expression and simplifying, we have this:

$3-6.2=-3.2.$

So, I expect the number 3 - √38 to be close to -3.2.

Using a calculator we find that: 3 - √38 ≅ -3.16, which it is approximately the result that we found.

Answer

Without a calculator we find that 3 - √38 ≅ -3.2.

5 0

1 year ago

Lena paid $18.96 for 3 pounds of coffee. How many pounds of coffee could she buy for $1.00

oksano4ka [1.4K]

Answer:

0.16 pounds

Step-by-step explanation:

Lena paid $18.96 for 3 pounds of coffee.

$1.00 will make (1x3)/18.96= 3/18.96 = 0.1582278481 pounds = 0.16 pounds

6 0

3 years ago