peter

Popular questions and responses by peter
1. Algebra 2

What is the maximum product of two numbers whose sum is 22? What numbers yield this product?

2. Biology

B. The scientific name for tiger is Panthera tigris, cat is Felis domesticus and lion is Panthera leo. Which two are more closely related? Why?

3. Math

3. At the end of a dock, high tide of 14 m is recorded at 9:00 a.m. Low tide of 6 m is recorded at 3:00 p.m. A sinusoidal function can model the water depth versus time. a) Construct a model for the water depth using a cosine function, where time is

41. Science

14.If a forest ecosystem is removed through clear-cutting, many species of organisms that lived in that ecosystem disappear. Their loss is due to ________________________. 15.When fossil fuels are burned, they produce ________________, the main greenhouse

81. english 3

Which is the best restatement of the following sentence? Right or wrong, I assumed this ground, and now avow it

82. Science

A biologist made population counts of four different species of animals in an ecosystem. What can you infer from these numbers about possible predator-prey relationships between the species? Species A:155 Species B:17 Species C:2467 Species D:19 A.Species

83. Chemistry Problem

At 25 oC, Kc = 0.145 for the following reaction in the solvent CCl4. 2BrCl Br2 + Cl2 A solution was prepared with the following initial concentrations: [BrCl] = 0.0482 M, [Br2]= 0.0307 M, and [Cl2]= 0.0277 M. What will their equilibrium concentrations be?

84. Chemistry

Balance this chemical equation. K4Fe(CN)6 + KMnO4 + H2SO4 ---> KHSO4 + Fe2(SO4)3 + MnSO4 + HNO3 + CO2 + H2O

85. help me plss

1. 48 c = __ qt (1 point) 6 8 10 12 2. 96 oz __ 5 lb (1 point) < > = 3. 6 yd, 1 ft = __ ft (1 point) 7 12 19 36 4. lb = __ oz (1 point) 104 108 112 136

86. chemistry

what is the formula of iron III tannate?

87. Math

Find two quadratic functions, one that opens upward and one that opens downward, whose graphs have the given x-intercepts. (-3, 0), (-1/2, 0)

88. math

Find digits A and B in the number below so the folling condition are true. The 5-digit number must be divisible by 4. The 5-digit number must be divisible by 9. Digit A cannot be the same as Digit B. 12A3B Explain the steps you followed to solve the

89. Biology

Which functional group is most likely to be responsible for an organic molecule behaving as a base (-OH donator / H+ acceptor)? A. Phosphate B. Amino C. Hydroxyl D. Carbonyl E. Carboxyl

90. Biology

There are 20 amino acids that cells use to build the numerous amounts of proteins that are essential for life. If a protein molecule consisted of 100 amino acids, how many combinations are possible? What is the probability that out of the total possible

91. Algebra 2

When x² - 3x + 2k is divided by x + 2, the remainder is 7. Find the value of k. Use synthetic division to do so.

92. Algebra 2

Solve using linear combinations. x - 5y = 6 3x + 4y = 18 What are linear combinations?

93. Chemistry

What is the ratio of carbon atoms to hydrogen atoms in the compound 2CH2 = C2H4? A. 1 to 9 B. 9 to 1 C. 3 to 6 F. 6 to 3

94. Pre-Calculus Vectors

Let u = 2i − j, v = −i + j. Find 2u - 3v.

95. Physics 20

dynamics A curling stone has a mass of 20kg. a curler pushed the stone across the ice to launch it down the rink. a)if the curler starts to move the stone by pushing it with 15N, what is the stones initial acceleration? b)once moving, how much force is

96. Physics

A tow truck exerts a force of 3000 N on a car, accelerating it at 2 m/s2 . What is the mass of the car?

97. Chemistry

Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, , can be titrated against a solution of potassium permanganate, . The following equation represents the reaction:

98. research evaul 342

If the coefficient of correlation is –0.81, then the percentage of the variation in y that is explained by the regression line is 81%. A. True B. False