math calculators

Two cars are on the same side of a spire of height h ft. The angles of depression of these two cars from the top of the spire are φ and θ . Calculate the distance between the cars when h = 100, φ = 25° and θ = 40°. => 96 ft or 81 ft. or 334 ft. or 20 ft..

Stephanie uses the expression m + 4 to calculate the amount owned by her brother, Tim, where m represents the amount owned by Stephanie. How much does Tim own if Stephanie owns $7? => $13 or $10 or $11 or $8..

A storekeeper found 12 hats left at the store this week. His records shows that 13 hats were sold last week. Choose the number sentence to calculate h , the number of hats that were there in the store at the begining of last week. => 13 - 12 = h or 12 + 13 = h or 13 h = 12 or 12 h = 13..

John was sick for 4 days of a particular week. Choose the number sentence to calculate the number of days, n , John was not sick in that week. => 7 - 4 = n or 7 + 4 = n or 4 n = 7 or 7 n = 4..

Express the exponential equation 2 x + 3 = 11 in calculation-ready form. Do not solve. => log 11 - 3log 2 log 2 or 3log 2 - log 11 log 2 or log 11 + 3log 2 log 2 or - 3log 9 log 2..

Katie calculates the area of an equilateral triangle using the formula A = ( 1 2 ) ap . Tim calculates the same area using the formula A = ( 1 4 ) s ² 3 . Do they both get the same answer?. => Yes or No..

Approximate the solution of the linear equation 2.35( x - 3) = 8.5 - 1.65 x by using a graphing calculator. => 3.9 or 22.2 or 5.2 or 0.4..

In the discrete series, when deviations are taken from actual mean, the formula ..

In a factory, 400 calculators were checked, out of which 40 were found to be defective. How many defective calculators can be found in a sample of 1200 calculators? => 110 or 120 or 130 or 90..