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. 8 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. 36 views
Curious Carl and his lab partner were conducting a variety of experiments to produce gases: hydrogen, oxygen, and carbon
1. 1 answer
2. 37 views
At how many points is sinθ = 1/2 on the interval [-3π, 3π]?
1. 5 answers
2. 25 views
Find the domain of f(x)\sqrt(2x^(2)-50)
1. 1 answer
2. 26 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. 36 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. 39 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. 25 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. 43 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. 25 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. 33 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. 61 views
Solve for x.3^(3x-10) = 3^x * 3^4
1. 1 answer
2. 26 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. 54 views
An Arrhenius baseA. donates H+ B. donates OH- C. produces H+ D. produces OH-
1. 3 answers
2. 36 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. 44 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. 26 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. 35 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. 35 views
Simplify 1528/1593
1. 3 answers
2. 34 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. 59 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. 56 views
Add. State the sum in simplest form.(x^2)/(x+2) + (4x)/(x+2) + (4)/(x+2), x ≠ -2
1. 5 answers
2. 52 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. 53 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. 59 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. 84 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. 50 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. 84 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. 66 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. 31 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. 30 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. 75 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. 81 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. 92 views
Which compound contains a triple bond?ammonia (NH3) nitrogen gas (N2) methane (CH4) chlorine (Cl2)
1. 5 answers
2. 72 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. 158 views
In the ionic bond of Na + Br, how many electrons will Na transfer to Br?
1. 1 answer
2. 78 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. 107 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. 219 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. 122 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. 141 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. 906 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. 359 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. 325 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. 236 views
List three things that may have caused the 'passion' that strained the 'bonds of affection' between northern and southern
1. 1 answer
2. 202 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. 223 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. 1,579 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. 578 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. 236 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. 862 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. 4,567 views
Giants and dwarfs are believed to be _________ stars.A. old B. young
1. 2 answers
2. 281 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. 378 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. 1,477 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. 13,334 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. 237 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. 636 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. 1,784 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. 657 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. 1,758 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. 440 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. 334 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. 344 views