The measurement of a pressure valve starts at 36 psi and falls to 30 psi. What is the approximate percent decrease in the reading on the pressure valve.

a. 17%

b. 20%

c. 80%

d. 83%

Round to the hundredths place: 2.5685168

An ellipse is represented by the equation (y-3) ^2/169 + (x+6) ^2/144=1 each directrix of this ellipse is a (A) horizontal line that is 5 units (B) vertical line that is five units (C) horizontal line that is 33.8 units (D) vertical line that is 33.

Kenisha went shopping at a kids clothing store where the shirts and pants were the same price. she bought 8 shirts and 6 pairs of pants she also bought a toy for $4. she spent a total of $88. how much did each shirt or pair of pants cost?

There are 12 481 people at a concert. 8906 of these people are adults. The rest of the people are children. of the children are boys. Work out the number of girls at the concert.

F=9/5C+32. Solve for C.

Is 4x-y=1 a standard form equation

An urn contains 1 red ball, 2 green balls, and 4 blue balls. Three balls are randomly chosen from the urn. How many different color combinations are possible?

Simplify the expression. 28 + 18 : 6 • (-3) 19 27 - 23 - 93

Ms. Groves has trays of paints for her students in art class. Each tray has 5 colors. One of the colors is purple. What fraction of the colors in 20 trays is purple?

Leslie can read about 2192 words in 8 minutes. About how many words can she read in 60 minuets