The Sun produces 3.9 ⋅ 1033 ergs of radiant energy per second. How many ergs of radiant energy does the Sun produce in 2.45 ⋅ 105 seconds? Express your answer in scientific notation and show your work.

Jojo, my cat, had eight kittens. Three were black with white spots. Four were all black. The last one was gray. What is the ratio of all black cats to the entire litter of kittens?

A bag contains nine red marbles, nine green marbles, nine blue marbles, and eight yellow marbles. If Lisa draws a random marble from the bag, what is the probability that it will be a red, green, or blue marble?

Mia has a coin collection. A friend called Carmen asks her how many coins she has. Mia says that the 8 coins she has shown Carmen is only 5% of her entire collection. What is the total number of coins in Mia's collection?

A bank's loan officer rates applicants for credit. the ratings are normally distributed with a mean of 200 and a standard deviation of 50. if 40 different applicants are randomly selected, find the probability that their mean is above 215.

a person made 4 blankets each blanket used 180 inches of ribbon for the border how many yards of ribbon did the person use for all 4 blankets

How much is 10 to the second power?

Ilana needs d more dollars to buy a new scrapbook that costs $8.35. She has $4.88. Solve the equation $4.88+d=$8.35 to find how much more money Ilana needs.

How to write standard form of three million, sixty thousand, five hundred twenty

Answer the following regarding the letters in the word Minnesota a. Determine the ratio of vowels to consonants. b. What is the ratio of consonants to vowels? c. What is the ratio of consonants to letters in the word?

Work out the circumference of the circle with radius 2.5 cm