# Robert

Questions and answers by visitors named Robert

## Questions

1. ### Any number in the form of a+-bi , where a and b are real numbers and b not equal 0 is considered a pure imaginary number. TRUE OR FALSE

The minimum value is the smallest y-value of a function. T RUE OR FALSE i2 = square root of -1. TRUE OR FALSE Complex

2. ### 15. What is the solution of the linear-quadratic system of equations?

{y = x^2 + 5x - 3} {y - x = 2}

3. ### Can you double check my answer

The lengths of the sides of a rectangular window have the ratio 1.6 to 1. The area of the window is 2,560 square inches. What are the dimensions of the window? (1 point) 50.6 inches by 50.6 inches 40 inches by 64 inches 40

4. ### The function f given by f(x) = x^3 + 12x – 24 is?

Increasing for all x's? Cause that's what I think..

11. ### Estimate each sum and difference.

3 1/4 + 2 5/6 5 6/9 - 1 3/4 5 5/13 + 8 3/5 11 - 6 3/7 + 2 2/5

12. ### 1) The following passage is an example of which literary element?

"Give back your heart to itself, to the stranger who has loved you all your life, whom you ignored for another, who knows you by heart." a)paradox b)magical realism c)metaphor d)hyperbole*

20. ### measure of angle A and measure of angle B are complementary. measure of angle A = 3x + 12 and measure of angle B = 2x - 22.

Find the measure of each angle.

24. ### The two waiters exchanged a look whose meaning was clear to me.

what type of clause or phase is used?

25. ### He will not allow the table to be moved.

identify the Verbal in the sentence and type of verbal

34. ### 30.0 g of NaCl(s) is added to water to make 800 mL of salt solution.

a. Determine the number of moles in 30.0 g of NaCl(s). b. Calculate the molar concentration of this salt solution.

35. ### Classify each substance as being either a molecular compound or an ionic compound. Determine whether it will dissolve in water and whether it is classified as an electrolyte or a non-electrolyte.

1. CH4(g) 2. Li2O(s) 3. AlCl3(s)

37. ### Rebecca has 20 table tennis balls and 16 table tennis paddles. She wants to sell packages of balls and

paddles bundled together. What is the greatest number of packages she can sell (with no leftover balls or paddles and one ball per paddle)?

38. ### If Mary inspects every sixth calculator and Nancy inspects every fifth calculator, which calculator will

be the first that they both inspect?

39. ### Eggs come in packages of 12 and English muffins come in packages of 10. What is the least number of

packages of each that can be bought to be able to make egg sandwiches with no muffins or eggs left over?

40. ### Donna has 5 packs of candies. Each pack has 52 candies, and each

pack has different candy flavor. The flavors of candies in the different packs are strawberry, caramel, chocolate, cherry, and coffee. Eighteen of Donna’s friends came, and she gave each of

42. ### Centripetal force is a fictitious force.

True False ik that centrifugal is fictitious, is it the same?

43. ### An object is pushed horizontally at constant velocity. What is true about the forces on the object?

a) The force or forces acting forward are greater than the force or forces acting backward. b) The sum of all forces is directed forward. c) The forces

46. ### The Kingdom of Benin ____.

1: Gained much wealth from its trading city of Tombouctou 2: Was called the “land of gold” by many Arab writers 3: Lost control of its trade routes to the kingdom of Mali 4: Gained its wealth from trading ivory, palm oil, and

50. ### Use the matrix method to solve

5x+3y=35 3x-4y=-8

53. ### The amount of money in an account may increase due to rising stock prices and decrease due to falling stock prices. Nathan is studying the change in the amount of money in two accounts, A and B, over time.

The amount f(x), in dollars, in account A after x

58. ### A racing car of mass 850 kg accelerates from 20 km/h to 160 km/h over a distance of 300 metres. Frictional forces and wind resistance can be assumed to be 800N.

Determine the following: (i)The average acceleration (ii)The time taken to accelerate from 20

59. ### How do you take the limit of a composite piecewise function f(f(x))?

Only the graph is given. lim f(f(x)) x->2 I figured the way to do it was to find the lim f(x) = C then find lim f(x). x->2 x-> C The simple questions on Khan academy's "Limits of composite

y=100-16t^2

67. ### I need help with lesson 12 unit 2 for seventh grade there is a unit test called Eastern Europe and Russia and unit test

7. Many words offer clues to media bias. Which word below would mostly likely signal bias. A. Was B. Did C. Should D. Might

68. ### Procedure:

1) Accurately weigh approximately 0.40 g of Dimethyl maleate into a 50 mL round bottom flask that possesses a ground glass joint, and record the weight. 2) Dissolve the Dimethyl maleate in 10 mL of methanol, and add approximately 5 drops of

69. ### Procedure:

1) Accurately weigh approximately 0.40 g of Dimethyl maleate into a 50 mL round bottom flask that possesses a ground glass joint, and record the weight. 2) Dissolve the Dimethyl maleate in 10 mL of methanol, and add approximately 5 drops of 10%

70. ### Elasticity

a) Find the elasticity of the demand function q + 2p = 5000 when p = \$1000, and q = 3000. b) How would revenue be affected by a price increase?

71. ### Q1:(a) Make a relative frequency table of the data. Enter your answers to three decimal places.

Cell Phone Owned Relative Frequency Android smartphone iPhone smartphone Blackberry smartphone Cell phone not smartphone No cell phone Total (b) Round your

77. ### Assume you have a canon aimed straight up. The cannonball is shot at a velocity

of v_0=69 m/s. How high does the cannonball go? How much time does it take the cannonball to reach that height?

80. ### A chemist needs 22 liters of a 14% acid solution. He has a 10​% solution and a 20% solution available to form the mixture. How much of each should be used to form the 14​% ​solution?

I'm having a really hard time forming an equation for this. I've

82. ### The Vector v has a length of 15 and points at an angle of 30 degrees. The Vector u has a length of 17 and points at an angle of 55 degrees. What is u*v?

I know to get my answer I need to use this format |u|*|v|*cos(theta) however I am stuck at setting up my

83. ### Suppose that A and B are independent events such thatP(A)=.50 andP(B)=.30 .

Find and P(A U B) and P(A upside down U B) .

84. ### Bert gave me 1/2 of the candy bar then I gave 1/2 of what I have to my sister

What fraction of the whole candy bar did my little sister get and what percent did she get

90. ### What point on the unit circle corresponds to -5pi/4?

A. (-Root2/2, Root2/2) B.(-Root3/2, 1/3 C.(-1/2, Root3/2) D.(0,1) D?

96. ### A 5.86 kg block initially at rest is pulled to the

right along a horizontal surface by a constant, horizontal force of 14.4 N. The coefficient of kinetic friction is 0.14. The acceleration of gravity is 9.8 m/s 2 . Find the speed of the block after it has

98. ### single titration was performed which required 11.82 ml of .1 M Na2S2O3

the density of the original undiluted bleach unknown was 1.04 g/ml calculate the number of moles of ClO- in the sample titrated ClO- + 2I- + 2H+ === I2 + Cl- + H20 I2 + 2S2O2/3- === 2I-

100. ### Are my answers correct?

Calculate the molarity: a) 0.500 mol of NaOH in 2.45 L of solution. b) 24.1 g of NaCl in 853 mL of solution. a: 0.2 M b: 0.49 M

1. 1
2. 2
3. 3
4. 4
5. 5