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Questions (71)

y= 1/3x + 3/2what is your question?
1. 1 answer
2. 273 views
BrO-3 + 5Br- + 6H+ ---> 3Br2 + 3H2O the value of - delta[BrO3]/delta T= 1.5x10^-2M/s at a particular time what is the value of
1. 3 answers
2. 1,898 views
on a certain farm, on average, 64 hens lay 768 eggs in 64 days. also on average, 46 hens on same farm eat 46 kilograms of wheat
1. 5 answers
2. 537 views
What are four situations where photovoltaic cells would have an advantage overother sources of electric energ?
1. 1 answer
2. 295 views
the banana boat song is part of which section in music
1. 1 answer
2. 405 views
f(x)= -7(cos(s^3))(tan(s^2)), find f'(x).I got 21s^2cos(s^3) x 2s(sec^2(s^2)) but it is wrong...
1. 1 answer
2. 319 views
why can I not use the formula m1v1=m2v2 for the following question: What volume of 1.20 M NaOH will be needed to neutralize 225
1. 6 answers
2. asked by drew
3. 6,025 views
T^(1/3)=e^(r/10)m^(3/2)If the mass and radius are given as m= 2 mg and r= 5mm, and the rates of change of the temperature and
1. 1 answer
2. 336 views
A particle moves in the plane along the curve y=xln(x). At what rate is the distance from the origin increasing at the moment
1. 2 answers
2. 587 views
Find the direction of the vector represented by the following pair of components: Ax= -3.15 m, Ay= 6.85 m. Find theta measured
1. 1 answer
2. 451 views
Verify that the volume of a cylinder of radius r and height h is given be the formula v= pi*r^2*h using cylindrical shell
1. 1 answer
2. 444 views
Suppose a fixed cannon is to fire a projectile at an enemy tank, which is moving toward the cannon at a speed of 15 mph. If the
1. 2 answers
2. 656 views
A toy rocket is fired off a platform with an initial speed of 223 ft/sec at an angle of elevation of 32 degrees and achieves a
1. 4 answers
2. 592 views
A 20 kg slender rod pivoted at its center has a length of 6 m. A motor applied a torque of 2400 Nm on the rod to turn it from
1. 1 answer
2. 411 views
|60|___|-60|< > =
1. 4 answers
2. 392 views
HELP ME!!!One of your friends missed the class on scientific notation. Describe how you would explain to your friend what it
1. 4 answers
2. 2,285 views
What products are formed when sucrose is heated in an aqueous sulfuric acid solution? What role does the acid play?
1. 1 answer
2. 447 views
train is approaching the station at a speed of 20m.s sounds a 220 hz horn. What frequency does an observer on the station
1. 2 answers
2. 494 views
How tall is a tower if it casts a shadow 65 ft long at the same time that abuilding 160 ft tall casts a shadow 130 ft long?
1. 3 answers
2. 604 views
what are three common ores from which copper can be extracted
1. 1 answer
2. 332 views
Find the other endpoint of the line segment with the given endpoint and mid point.1. Endpoint:(-1, 9), midpoint: (-9, -10) 2.
1. 2 answers
2. 838 views
Nitrogen-13 has a half-life of 10 minutes. Given a starting mass of 2.00 g of nitrogen-13, how many grams will remain at the end
1. 1 answer
2. 404 views
Lithium-6 has an atomic number of 3. how many neutrons are in this isotope? A. 0 neutrons, B. 3 neutrons, C. 6 neutrons, D. 9
1. 1 answer
2. 489 views
Actinides and Lanthanides are elements in group 3A. true or falseI say false
1. 3 answers
2. 468 views
the idea of the atom was first proposed by john dalton. true or falsefalse
1. 2 answers
2. 492 views
boron-10 has an atomic number of 5. how many neutrons are in this isotope? 0 neutrons, 2 neutrons, 5 neutrons, 10 neutrons.I say
1. 2 answers
2. 552 views
boron-10 has an atomic number of 5. how many electrons are in this isotope? 0 electrons, 2 electrons, 5 electrons, 10 electrons.
1. 1 answer
2. 501 views
Lithium-6 has an atomic number of 3. How many protons are in this isotope?A. 0 protons B. 3 protons C. 6 protons D. 9 protons I
1. 1 answer
2. 502 views
Lithium-6 has an atomic number of 3. How many electrons are in this isotope?A. 0 electrons B. 3 electrons C. 6 electrons D. 9
1. 1 answer
2. 446 views
the fluoride anion always carries a charge of 1- true or falseI say true
1. 2 answers
2. 886 views
how many electrons does Fe3+ gain or lose when the ion forms?A. gains 1 electron B. loses 1 electron C. gain 3 electrons D.
1. 4 answers
2. 3,336 views
what is the formula for the arsenic ion. A. As3-B. As2- C. As, D. As3+ I say c.
1. 2 answers
2. 1,200 views
in the formula for calcium bromide (CaBr2), what does the subscripted two indicate?A. the bromide atom has a charge of 2- B. the
1. 2 answers
2. 688 views
a compound is found to be 94.1% o and 5.90% h. its molecular mass is 34.0. what is its molecular formulaA. H3O2 B. OH C. H2O D.
1. 2 answers
2. 617 views
how many moles are in 243.6 g caco3?A.7.41 mol caco3 B 2.43 mol caco3 C.102.46 mol caco3 D.88.1 mol cao3 I say A
1. 2 answers
2. 940 views
what is the percent by mass of carbon in c3h8?A. 18.20% B. 20.0% C. 81.8% D. 85.0% I say A
1. 4 answers
2. 2,090 views
amphetamine (c9h13n) is a powerful stimulant. what is the percent composition of all of the elements in this compound?A.
1. 3 answers
2. 635 views
one isotope of chromium (atomic number 24) has an atomic mass of 53 amu. how many neutrons are in this particular isotope of
1. 4 answers
2. 922 views
solve the following and express your answer in scientific notation: (5.3 x 10^4) + (1.3 x 10^3)A. 5.4 X 10^4 B. 5.4 X 10^8 C.
1. 4 answers
2. 435 views
If f(x) = 2x and g(x) = ½ , calculate f(x) • g(x)A. x B. x2 C. 2x D. 2x2 I say B
1. 1 answer
2. 288 views
Find f(x)·g(x) if f(x) = 3x and g(x) = x + 1.A. 3x2 + 3x B. 3x + 1 C. 4x + 1 D. 3x2 + 1 A
1. 1 answer
2. 460 views
Find the slope between points (4, 6) and (-2, 6).A. 0 B. Undefined slope C. one fourth D. -4 D
1. 1 answer
2. 328 views
Find f(x)·g(x) if f(x) = 3x and g(x) = x + 1.A. 3x2 + 3x B. 3x + 1 C. 4x + 1 D. 3x2 + 1 D
1. 2 answers
2. 531 views
Find g o f if f(x) = x + 7 and g(x) = 3x – 2.A. 3x + 5 B. 3x - 5 C. 3x + 19 D. -3x - 19 C
1. 1 answer
2. 245 views
Find g of f if f(x) = 2x - 1 and g(x) = x + 2.A. 2x - 3 B. 2x + 1 C. 2x - 1 D. 2x + 3 D
1. 1 answer
2. 272 views
Find f o g if f(x) = x + 7 and g(x) = 3x – 2.A. 3x + 5 B. 3x - 5 C. 3x + 19 D. -3x - 19 D
1. 1 answer
2. 254 views
Find f o g if f(x) = 2x - 1 and g(x) = x + 2.A. 2x - 3 B. 2x + 1 C. 2x - 1 D. 2x + 3 B
1. 1 answer
2. 272 views
Simplify the rational expression: x−5 /x 2 −x−20A. x−4 B. x+4 C. x 2 −15 D 1 /x+4 D
1. 1 answer
2. 402 views
What is the range of the inverse of relation {(1, 7), (2, -4), (5, 6), (2, 8)}?A. {1, 2, 5} B. {-4, 6, 7, 8} C. {1, 5} D. {-4,
1. 4 answers
2. 736 views
f of x = the square root of 2x minus 5Find f(4.5) A. 2 B. 3 C. -5 D. 7 B
1. 1 answer
2. 374 views
Determine if the inverse of function {(-3, -6), (-1, 2), (1, 2), (3, 6)} is also a function.A. function B. not a function B
1. 1 answer
2. 339 views
f of x = the square root of 2x minus 5Find f (27) A. 2 B. 3 C. -5 D. 7 D not sure on this stuff, could you explain the steps?
1. 1 answer
2. 382 views
f of x = the square root of 2x minus 5Find f(7) A. 2 B. 3 C. -5 D. 7 A
1. 2 answers
2. 718 views
Which of the following relations is a function?A. {(5, 2), (3, 2), (4, 2), (5, 1)} B. {(1, 2), (1, 3), (2, 1), (3, 4)} C. {(1,
1. 3 answers
2. 809 views
Find the maximum or minimum of the following quadratic function: y = x2 - x - 56.A. -56 B. 56 C. -225/4 D. 225/4 d
1. 4 answers
2. 1,001 views
Find S10 for 2 + 5 + 8 +...A. 155 B. 152 C. 255 D. 135 I say A.
1. 1 answer
2. 322 views
Find S25 for 1/2 + 1 + 3/2 + 2 +...A. 160 B. 162 C. 160.5 D. 162.5 I think D
1. 4 answers
2. 1,199 views
Find S25 for (-7) + (-2) + 3 + 8 +...A. 1,320 B. 1,325 C. 825 D. 820 I think A
1. 3 answers
2. 472 views
Find S10 for (-1) + (-7) + (-13) + (-19) +...A. 250 B. -280 C. (-23) D. 132 C.
1. 1 answer
2. 320 views
Find the 11th term of the arithmetic sequence 7, 4.4, 1.8, -0.8, …A. -33 B. -19 C. 33 D. 19 B
1. 3 answers
2. 651 views
how to do pre algebra pizzazz page e 28
1. 5 answers
2. 1,529 views
Christine lives in Bangor, Maine , and her friend Denise Brown lives in Sioux City, Iowa. They both drive to Dade City, Florida,
1. 2 answers
2. 533 views
If Don Gecewicz invests $5000 at 9% interest compounded quarterly, find the amount after 4 years.
1. 2 answers
2. 1,207 views
As company ombudsman, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers,
1. 1 answer
2. 450 views
Which statement most accurately compares Earth’s crust and Earth’s mantle?
1. 3 answers
2. 904 views
A farmer's land is separated into sections of size215 acres. Suppose there are 449 such sections. How many acres of land does
1. 3 answers
2. 872 views
chapter 10 lord of the flies1. What is troubling Ralph and Piggy at the start of this chapter? 2. What was Samneric's
1. 1 answer
2. 906 views
what does -furi mean?To be angry To be funny To be furry To be anxious
1. 1 answer
2. 237 views
What does the root word -furi mean?To be angry To be funny To be furry To be anxious
1. 4 answers
2. 312 views
do my work please
1. 1 answer
2. 179 views
The measured potential of the following cell was 0.1776 volts.Pb|Pb2+ (?M )||Pb2+ (1.0M)|Pb Calculate the electrode potential of
1. 4 answers
2. 548 views

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