Sunday
December 8, 2013

# Posts by Grace

Total # Posts: 346

Math
There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class passed the math test with an A. 12 students in the class passed the math test with a B. What percent of the students in the class passed the test?

Math
There are 24 students in Mrs.Smith's 1st block class. 1/4 of the class passed the math test with an A. 12 students in the class passed the math test with a B. What percent of the students in the class passed the test? ****** This is how I slove the problem, but I stuck in ...

physical science
120ml of a solution whose concentration is 30g/ml was diluted with distilled water by raising its volume to 160cm3. Calculate the concentration of the new solution.

Algebra 2
did you ever get this answer?

math
I have a question. I think I'm wrong, so I want to ask if it's right. If I do 3/4 x 1 5/6 x 7/4 x (-2 3/8) would the answer be negative?

Math
Given h(r) = 1/(r + 2), find: h(x^2) + 1 Thank You

math
the chef at a restaurant bought 37 pounds of salad for \$46.25. how much did she pay for 1 pound of salad

chemistry
9.5 g Butane + 34.0 g Oxygen = 43.5 Then 43.5 - 28.7 g CO2 = 14.8 That is the answer: 14.8 g

Precalc
An ellipse has this Cartesian equation: ((x-2)/5)^2 + ((y-4)/3)^2 = 1 Find the focal radius Find the eccentricity Write the parametric equations for the ellipse Transform into the form, Ax^2 + By^2 + Cx + Dy + E = 0

Precalc
A hyperbola has this Cartesian equation: -((x-2)/5)^2 + ((y+1)/3)^2 = 1 A. Find direction in which it opens. Horizontal? B. Find the coordinates of the center. I think it's (-2,1) or (1,-2)? C. Find the slopes of the asymptotes: m=+- ?

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