Questions and answers by

akarsha

Questions (64)

Which bone would a forensic anthropologist analyze to identify a victim as male or female?phalanges humerus skull tibia
1. 1 answer
2. 56 views
How many moles of BaSO4 are formed if 0.5 moles of Na2SO4 react with excess BaCl2?Na2SO4 + BaCl2 → BaSO4 + 2NaCl A. 0.144 mol
1. 1 answer
2. 82 views
Curious Carl and his lab partner were conducting a variety of experiments to produce gases: hydrogen, oxygen, and carbon
1. 1 answer
2. 92 views
At how many points is sinθ = 1/2 on the interval [-3π, 3π]?
1. 5 answers
2. 49 views
Find the domain of f(x)\sqrt(2x^(2)-50)
1. 1 answer
2. 45 views
Three polynomials are factored below, but some coefficients and constants are missing. All of the missing values of a, b, c, and
1. 3 answers
2. 85 views
Which of the following reactions is an example of an endothermic reaction?A. H2O(l) + energy → 2H2(g) + O2(g) B. 2H2(g) +
1. 1 answer
2. 77 views
Which of the following factorizations is correct?A. x^(3)-64=(x-4)(x^(2)+4x+16) B. x^(3)-64=(x-4)(x^(2)+16) C.
1. 1 answer
2. 49 views
Which one of the following absolute value equations and inequalities have a solution set that is NOT the empty set?A. -3|x - 1|
1. 1 answer
2. 77 views
Which of the follow inequalities has no solutions?A. x < -4 and x > 1 B. x < 4 and x ≥ 1 C. x ≤ 4 and x > 1 D. x < 4 and x >
1. 1 answer
2. 63 views
Which example is energy entering into the reaction?A. a liquid changing to a gas B. sodium chloride dissolving in water C.
1. 1 answer
2. 63 views
A tank of gas has partial pressures of nitrogen and oxygen equal to 1.61 atm and 4.34 atm, respectively.What is the total
1. 1 answer
2. 109 views
Solve for x.3^(3x-10) = 3^x * 3^4
1. 1 answer
2. 54 views
Predict the products of the reaction:H3PO4 + NaOH --> ?? + ?? A. Na3PO4 + H2O + CO2 B. Na3PO4 + H2 C. Na3PO4 + H2O D. Na + H2O
1. 1 answer
2. 100 views
An Arrhenius baseA. donates H+ B. donates OH- C. produces H+ D. produces OH-
1. 3 answers
2. 67 views
Chemistry students were testing compounds in an aqueous solution to see which one had the strongest electrical current.There are
1. 1 answer
2. 69 views
Using the equation [H+]= -log[H+], what is the pH of a solution with a [H+] of 6.8 x 10-9 M.A. 9.99 B. 8.62 C. 8.17
1. 1 answer
2. 58 views
What is the formula to calculate pH?A. pH = -log[OH-] B. pH = -log[H+] C. we do not need a formula, we can just estimate
1. 1 answer
2. 56 views
Describe how the cubic functions g(x) and h(x) have been transformed from the parent function f(x).f(x) = x^3 g(x) = -(x - 5)^3
1. 1 answer
2. 66 views
Simplify 1528/1593
1. 3 answers
2. 62 views
A reaction creates methanol (CH3OH) from carbon monoxide (CO) and hydrogen gas (H2). There are 3 moles of CO and 8 moles H2.
1. 1 answer
2. 114 views
Perform the indicated operations, then simplify.(2y)/(y + 8) + (3y)/(y^2 - 64) - (4)/(y - 8) A. (5y - 4)/(y^2 + 2y - 64) B.
1. 1 answer
2. 79 views
Add. State the sum in simplest form.(x^2)/(x+2) + (4x)/(x+2) + (4)/(x+2), x ≠ -2
1. 5 answers
2. 75 views
Divide. State the quotient in simplest form, and express the domain of the expression.(4)/(3x^5) ÷ (12)/(5x^7) A.
1. 1 answer
2. 89 views
An object is dropped from a height of 256 feet. The amount of time, in seconds, the object takes to hit the ground can be found
1. 1 answer
2. 86 views
Which type of investments are most at risk for losing value due to inflation?A. liquid investments B. high-risk investments C.
1. 5 answers
2. 146 views
What is a benefit of owning a vehicle instead of leasing one?A. The large initial down payment will be tax deductible. B. Car
1. 1 answer
2. 86 views
What is home equity?A. Home equity is the amount of interest paid on a mortgage during the lifetime of the loan. B. Home equity
1. 1 answer
2. 142 views
For the Haber process, N2 + 3H2→2NH3, which is the mole ratio of NH3 to H2.A. 1:2 B. 1:3 C. 2:3 D. 3:2
1. 1 answer
2. 101 views
Which answer choice represents the inverse of f(x) = √x - 7?A: f^-1(x) = x^2 - 7, x ≥ 0 B: f^-1(x) = x^2 + 7, x ≥ 0 C:
1. 1 answer
2. 53 views
Which function represents the inverse of f(x) = √x + 5?A: f^-1(x) = (x + 5)^2, x ≥ −5 B: f^-1(x) = x^2 - 5, x ≥ 0 C:
1. 1 answer
2. 54 views
Which of these is a balanced chemical equation?A. CO(g) + 2O2(g) → 2CO2(g) B. 2CO(g) + O2(g) → 2CO2(g) C. CO(g) + O2(g) →
1. 3 answers
2. 118 views
CH4 + O2 --> CO2 + 2H2OWhat needs to be done to balance this equation? A. Remove coefficient 2 in front of H2O on the right side
1. 1 answer
2. 119 views
What is a metallic bonding?A. The chemical bonding that takes place between metal atoms when they share electrons. B. The
1. 1 answer
2. 142 views
Which compound contains a triple bond?ammonia (NH3) nitrogen gas (N2) methane (CH4) chlorine (Cl2)
1. 5 answers
2. 107 views
In the ionic compound AlCl3, which statement is FALSE?A. Chlorine is not able to accept any electrons because it already has 8
1. 1 answer
2. 198 views
In the ionic bond of Na + Br, how many electrons will Na transfer to Br?
1. 1 answer
2. 101 views
An ionic bond is formed from a cation and anion.A cation + anion = A. negative ion B. positive ion C. neutral atom
1. 3 answers
2. 156 views
What happens if a small positively charged particle and a negatively charged particle of equal magnitude are placed close to
1. 1 answer
2. 265 views
A 40.0 kg stuntwoman is about to jump off a warehouse with a height of 40.0 m. What is her gravitational potential energy on
1. 1 answer
2. 165 views
Which equation is balanced?A. H2 + O2 → H2O B. 4H2 + O2 → H2O + O C. H2 + O2 → H2O + O2 D. 2H2 + O2 → 2H20
1. 5 answers
2. 183 views
Which of these sentences has an intransitive verb?A. Paul returned the tools, today. B. I lost my cell phone at the park. C.
1. 3 answers
2. 947 views
These red blood cells have all been placed in different solutions! Based on their appearance after being placed in these
1. 0 answers
2. 409 views
There is a proportional relationship between the revenue (in dollars), y, and the number of clocks Dora sells, x. She sells 98
1. 2 answers
2. 371 views
Sheila opens a saving account with $80 that earns 1% interest per year, not compounded.How much interest, to the nearest penny,
1. 1 answer
2. 278 views
List three things that may have caused the 'passion' that strained the 'bonds of affection' between northern and southern
1. 1 answer
2. 241 views
Okay this is pretty hard to explain, but I'll try to as best as I can. This isn't for homework or anything, I just can't figure
1. 0 answers
2. 267 views
The graph shows the relationship between the number of gallons of fuel remaining in the tank of a semitruck and the number of
1. 1 answer
2. 1,632 views
Compare and contrast spiral and elliptical galaxies. (Make at least 2 comparisons.)How are Earth and Venus similar? How is Venus
1. 1 answer
2. 631 views
Find the slope of the line that goes through the following points.(0, -4), (1, -3), (2, -2), (3, -1) A. -1 B. 1 C. -4 D. -7 (-1,
1. 1 answer
2. 276 views
(i forgot to put this in with the last question, sorry)What is the volume of the triangular prism to the nearest whole unit?
1. 32 answers
2. 912 views
Use the net to find the approximate surface area of the cylinder to the nearest square meter.[Image shows a cylinder with a
1. 17 answers
2. 4,618 views
Giants and dwarfs are believed to be _________ stars.A. old B. young
1. 2 answers
2. 306 views
What is the V/SA ratio of a sphere if the volume is 904.32 and the surface area is 452.16?
1. 1 answer
2. 401 views
1. Find the surface area for the given prism.Length: 14 in. Width: 10 in. Height: 8 in. A. 564 in^2 B. 664 in^2 C. 1,120 in^2 D.
1. 2 answers
2. 1,526 views
What is the value of the missing angle?[Image: a hexagon with the angles 150, x, 95, 145, 105, and 95.] A. 120 B. 130 C. 155 D.
1. 1 answer
2. 14,804 views
Which of the following equations has an infinite number of solutions?A. 3x - 3 = -4x B. 2y + 4 - y = 16 C. 7x + 5 = 4x + 5 + 3x
1. 1 answer
2. 255 views
Emma is saving money for college. She has $800 and wants to deposit it into 2 different savings accounts. She decides to deposit
1. 0 answers
2. 690 views
In 2000, the number of students enrolled at Arlington Country Day School was 823 students. In 2010, the population was
1. 2 answers
2. 1,835 views
I'm really confused about these two questions:Use the following plate boundary graphic for questions 13 - 14. It won't let me
1. 3 answers
2. 704 views
The price of a radio changes from $40.00 to $44.00.A. 10% decrease B. 10% increase C. 36.4% decrease D. 40% increase 44 - 40 = 4
1. 10 answers
2. 1,800 views
I just wanna make sure my answers are correct. I don't think they are, though1. What is Robert MacNeil's main point in "The
1. 1 answer
2. 489 views
We're learning about proportions and ratios, and I'm confused about this question (they're fractions, by the way):8/15 = 24/x A.
1. 3 answers
2. 392 views
Hi! I have a science project that's due today, and I need a little bit of help. I finished the actual project (look up "moon
1. 0 answers
2. 404 views