Order of operations
Simplify [(3)(5)-3]/2
(1 minute)
6
What is the solution to the following system?
x = 4y
2x + 3y = 22
(3 minutes)
(8,2)
3(3x -y)
(30 seconds)
9x - 3y
Write the number eight billion in scientific notation.
(30 seconds)
What is 8 x 10^9
4 + k = -8
k=?
(30 seconds)
k = -12
Simplify [(62)(4)-4]/5
(1 minute)
28
Solve for r and s.
r + s = -6
r - s = -10
(3 minutes)
(-8,2)
-4(2x-1)
(30 seconds)
-8x + 4
Write the number 0.0000056 in scientific notation.
(30 seconds)
5.6 x 10^-6
10 = m/16
m=?
(30 seconds)
m = 160
Simplify [8+10]/(9)(3) - 17
(1 minute)
1.8
Solve.
2x + 3y = 6
3x + 5y = 15
(3 minutes)
(-15, 22)
5(-6 -2g)
(30 seconds)
-30 - 10g
At a storage warehouse, each crate weighs 1.5 × 10^2 pounds. If there are 6 × 10^3 crates, what is their combined weight?
(1 minute)
900,000 lbs or 9 x 10^5 lbs
Solve for x.
5(6 - 5x) = -95
(2 minutes)
x = 5
Simplify [(9)(4)+14/2]^2
(1 minute)
1849
The sum of two numbers is 104. Their difference is 68. What are the numbers?
(3 minutes)
86 and 18
-4p2(-9p - 5)
(30 seconds)
36p3 + 20p2
A farm that has 5 x 10^6 acres of land produces about 1.6 x 10^8 pounds of rice each year. How much rice does the farm produce per acre every year?
(1 minute)
32 or .32 x 10^2
Solve for n.
-(n + 2) = 13 - 4n
(2 minutes)
n = 5
Simplify (12/3+5^2/2) - 0.5
(1 minute)
16
A shopper bought 6 shirts and 8 hats for $700. A week later, at the same prices, he bought 9 shirts and 6 hats for $660. What was the cost of one shirt?
(3 minutes)
$30
3x2y(2x - 4xy)
(30 seconds)
6x3y - 12x3y2
A newborn panda weighs about 2.2 x 10^-1 pounds. An adult panda can weigh up to 1.2 x 10^3 times a newborn's weight. How much can an adult panda weigh?
(1 minute)
About 264 pounds, or 2.64 x 10^2
Solve for x.
3(-6 +4x) = -38 + 2x
(2 minutes)
x = -2