What is the length of each edge of a cube if its surface area is 486 square units?

-81 units

-18 units

-9 units

-3 units

I am thinking of a number. when it is increasd by 7, it equals 21. what is my number a. n=28 b. n=14 c. n=7 d. n=147

Solve the following quadratic equation. A. x = 19 and x = 17 B. x = - 19 and x = - 17 C. x = - 19 and x = 17 D. x = 19 and x = - 17

Twice the difference of a number and 3 is at most 27

1. Simplify the following Expression a. 3y2 + 8y - 12 + 6x - 4y + 2y2

If a = - 3.4 and b = - 3.6, which of the following inequalities is not true? A a > b B |a| ≤ |b| C b ≤ a D |b| < a

Sohan Lal, the truck driver, is travelling from Abu Dhabi to Dubai. He refills the petrol tank in Abu Dhabi. If the truck can run 495 km on 36 liter petrol. What distance will the truck cover in 35 liters of petrol?

problem solving lesson 6a seven digit number has a 0 in the ones place, a 6in the ten thousands place, an 8 in the millions place, and fives in each if the remaining places. What is the number?

a food manufacturer recently developed a new preservative to extend the shelf life of its perishable food items. It makes two batches of the perishable items. The preservative is added only to the second batch.

The diagonals of a rectangle are equal. always sometimes never

Write a decimal between 12 and 15 that has a 3 in the tenths place and a 6 in the hundredths place