How do I solve this twice the difference of a number and seven is less than or equal to forty

How are weather balloons and weather satellites similar? A - They both collect weather data from the atmosphere. B - They both deconstruct when they pass the stratosphere. C - They both observe weather conditions from the exosphere.

A sample of 90 chewable vitamin tablets have a sample mean of 277 milligrams of vitamin C. Nutritionists want to perform a hypothesis test to determine how strong the evidence is that the mean mass of vitamin C per tablet exceeds 279 milligrams.

Sean spends 49 minutes doing his homework or about 38% of the total time he will spend. About how long will he spend doing his homework?

Jack, Jill and Bill each carried a 48-ounce bucket full of water down the hill. By the time they reached the bottom, jacks bucket was only 3/4 full. Jill's was 2/3 full, and Bills was 5/6 full.

John gets paid $6 for each of the first 40 toy cars he makes in a week. For any additional cars beyond 40 his pay increases by 50%. How much is he paid if he makes 48 cars?

Mr Rogers want to buy candies for some of the students who are attending the trip to the zoo There are 7 classes, and each dass has 28 students There will be 12 adults going with the students. • Mr.

What is fifteen thousand, two hundred six and fifty-three thousandths in standard expanded and expanded notation form?

What is the solution of the proportion 14/12=d/48

Solve by factoring 2x^2+13x-7=0

Simplify 2 (-10 + 2)