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How do you evaluate $- 423 (636) + 423 (287)$ $-423( 636) + 423( 287)$ ?
What is the probability of B if they are independent events P(A)= 3/7, P(A then B)=1/3?
On a scale drawing, a cell phone tower is 1.25 feet tall. The scale factor is $\frac{1}{150}$ $1/150$ . What is the height of the actual cell phone tower?
How do you calculate the average atomic mass of carbon if 98.90% of the atoms are C-12 (12.000000 and 1.100% are C-13 atoms (13.003354 amu)?
How do you simplify $\frac{\sqrt{9} \sqrt{8}}{\sqrt{6} \sqrt{6}} ?$ $(sqrt9sqrt8)/(sqrt6sqrt6)?$
How do you simplify $- 12 m (- 9 n)$ $-12m(-9n)$ ?
The exponential decay graph shows the expected depreciation for a new boat, selling for $3500, over 10 years. How do you write an exponential function for the graph. Use the function to find the value of the boat after 9.5 years?
$C u \to C u^{2 +} + 2 e^{-}$ $Cu -> Cu^(2+) + 2e^-$ What does this equation represent?
How do you solve $3 x + 6 y = 9$ $3x+6y=9$ and $2 x + 8 y = 10$ $2x+8y=10$ using substitution?
How do you use the amplitude and period to graph $o f y = sin (x + (\frac{π}{2}))$ $of y=sin(x + (pi/2) )$ ?
Question #87a00
How do you simplify $\frac{7^{\frac{1}{7}}}{7^{- \frac{13}{7}}}$ $7^(1 / 7) / 7^(-13 / 7)$ leaving only positive exponents?
How do you solve $4.2 = 29.8 - 8 w$ $4.2= 29.8- 8w$ ?
Question #af4de
How do you multiply $(4 x + 3) (3 x^{3} - 4 x + 14)$ $(4x + 3) ( 3x ^ { 3} - 4x + 14)$ ?
$C_{2} H_{4} + 3 O_{2} \to 2 C O_{2} + 2 H_{2} O$ $C_2H_4 + 3O_2 -> 2CO_2 +2H_2O$ . If you start with 45 grams of ethylene ( $C_{2} H_{4}$ $C_2H_4$ ), how many grams of carbon dioxide will be produced?
During the exponential phase, E. coli bacteria in a culture grown continuously. If the growth rate is 2.8% per minute and the current population is 124.0 million, what will the population be 6.3 minutes from now?
Question #6797f
How do you divide $\frac{\frac{20 x^{3} y}{7 m n^{2}}}{\frac{5 x^{5} y^{3}}{14 n^{5}}}$ $\frac { \frac { 20x ^ { 3} y } { 7m n ^ { 2} } } { \frac { 5x ^ { 5} y ^ { 3} } { 14n ^ { 5} } }$ ?
When $(n + 3) (n + 2)!$ $(n + 3) (n +2)!$ is multiplied by $(n + 4)$ $(n +4)$ and then divided by $(n + 2)!,$ $(n+ 2)!,$ what is the result?
Question #63acc
The circumference of a circle is $11 π$ $11pi$ inches. What is the area, in square inches, of the circle?
Question #ea8a2
How do you solve $\sqrt{54 + 3 x} = x$ $\sqrt { 54+ 3x } = x$ ?
How do you simplify $(x - 4) (3 - 6 x - 2 x^{2})$ $(x - 4) ( 3- 6x - 2x ^ { 2} )$ ?
A pulley system is used to lift a 2,000 newton engine up a distance of 3 meters. How much force will the operator have to apply if the mechanical advantage of the pulley system is 4?
How do you write the equation of the line with slope of -5 and passes through the point (2, -4)?
A charge of $12 C$ $12 C$ is passing through points A and B on a circuit. If the charge's electric potential changes from $54 J$ $54 J$ to $36 J$ $36 J$ , what is the voltage between points A and B?
Question #a5e2b
The gas inside of a container exerts $8 P a$ $8 Pa$ of pressure and is at a temperature of $210^{o} K$ $210 ^o K$ . If the temperature of the gas changes to $30^{o} C$ $30 ^oC$ with no change in the container's volume, what is the new pressure of the gas?
How do you use the quadratic formula to solve $\frac{1}{2} x^{2} - 3 x + 2 = 3 x - 1$ $1/2x^2-3x+2=3x-1$ ?
How do you evaluate $4 - [1 + 2 {(3 - 4)}^{2}]$ $4- [ 1+ 2( 3- 4) ^ { 2} ]$ ?
Question #65e73
How do you balance $N O_{3}^{-} + 4 H^{+} + P b \to P b^{2 +} + N O_{2} + 2 H_{2} O$ $NO_3^(-) + 4H^+ + Pb -> Pb^(2+) + NO_2 + 2H_2O$ ?
Question #bca2e
Question #4ee83