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Luke

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Simplify: −4(2x+5)(1 point)Responses (−4+2x)×(−4+5)open paren negative 4 plus 2 x close paren times open paren negative 4
1. 1 answer
2. 84 views
A 20-foot-long footbridge has two diagonal supports that meet in the center of the bridge. Each support makes a 65∘ angle with
1. 2 answers
2. 2,056 views
What does the dialogue in “The Diary of Anne Frank” reveal about Anne’s personality?
1. 0 answers
2. 305 views
A fellow student is studying the differences between photosynthesis and cellular respiration. The student asks you to explain
1. 1 answer
2. 2,858 views
the image to (0,2)
1. 1 answer
2. 236 views
whats the image of (-9,6)
1. 1 answer
2. 209 views
A population of a given bacteria is noted at the following intervals.Hours. 0 1. 9. 12. 18 Population. 400. 520. 4242. 9319.
1. 1 answer
2. 608 views
If $800 is deposited into an account that pays 6%/a compounded monthly, how many months will it take the investment to grow to
1. 2 answers
2. 2,175 views
why
1. 4 answers
2. 204 views
Capacitance is directly proportional to the surface of the plates. What is total plate area, in square inches, of a capacitor
1. 1 answer
2. 732 views
A particle moving in a straight line was the uniform deceleration has a velocity of 40m/s at a point P,20m/s at a point Q and
1. 0 answers
2. 418 views
John is at a local bait shop; he wants to buy bait for his fishing trip. At the store, they are selling live bait for $12 a
1. 2 answers
2. 1,195 views
There are 40 oranges in a box 3 twelfths of them are gone off how many are gone off
1. 2 answers
2. 253 views
A driver of a car going 95 km/h suddenly sees the lights of a barrier ahead. It takes the driver 0.55 s before he applies the
1. 2 answers
2. 625 views
A driver of a car going 95 km/h suddenly sees the lights of a barrier ahead. It takes the driver 0.55 s before he applies the
1. 1 answer
2. 435 views
What will be the luck numbers 5 out 90 at a given period of time?
1. 1 answer
2. 302 views
Whats a funny acrostic joke for beryllium
1. 1 answer
2. 458 views
A garden hose is used to fill a drum with water. The hose is held 0.88 m above the ground. The cross-sectional area of the 2.0
1. 2 answers
2. 1,121 views
The measure of angle a is 124° what is the correct classification for angle a is itAcute right obtuse straight
1. 6 answers
2. 1,192 views
And angle measures 53° what are the measures of the angles complement and supplement a complement 37° supplement 137° be
1. 17 answers
2. 5,037 views
Choose the pairing that is an example of archival materials a acid-free paper superglue be salt construction paper for the glass
1. 2 answers
2. 1,093 views
Choose the pairing that is an example of archival materials a acid free paper such as superglue basalt construction paper salt
1. 5 answers
2. 1,302 views
Sorry if this is a silly question, but can anyone algebraically explain to me how these two equations are equivalent.360/(180-x)
1. 1 answer
2. 398 views
Give a brief summary of Home Place by guy vanderhaeghe.
1. 1 answer
2. 569 views
Use geometry to evaluate integral[-3,3] for:f(x)= { √(4-(x+1)^2), -3≤x≤1 { |x-2| - 1, 1<x≤3 A. 2pi + 1 B. 2pi - 1 C. pi
1. 3 answers
2. 652 views
A bus travels at 70km/h for x hours and then at 80km/h for 0.5(x+3) hours. the total distance travelled was 460km. Determine x
1. 1 answer
2. 389 views
A bus travels 70km/h for xhours and then at 80km/h for (0.5x+3) hours. If the total distance traveled is 460km, find x to the
1. 1 answer
2. 379 views
Use the ion-electron method to write and balance the net ionic equation for each of the following reactions.MnO41- + Sn(OH)31-
1. 1 answer
2. 658 views
Drag and drop the correct justifications into the boxes.4(x−2)+1=9 : subtraction property of equality 4x−8+1=9 :combine like
1. 1 answer
2. 679 views
The most effective buffer solutions have equal concentrations of salt and acid (or base). Find the pH of a buffer solution with
1. 1 answer
2. 734 views
A chemical substance is draining from a conical filtering system at a rate of 100 cubic centimeters per minute into a
1. 1 answer
2. 591 views
1. Silicon dioxide reacts with carbon upon heating to produce silicon carbide (SiC) and carbon monoxide.SiO2(s) + 3C(s) = SiC(s)
1. 2 answers
2. 2,124 views
Has a negative -5/13Steve. If angles x and y are in the same quadrant and sin x =3/5 and cos y= -5/13 determine the value of sin
1. 1 answer
2. 430 views
If angle x and y are in the same quadrant , and sin x=3/5 and cos y=5/13, determine the value of sin(x-y) .
1. 1 answer
2. 962 views
A 2.80-g sample of haematite ore containing Fe3+ ions was dissolved in a concentrated acid and the solution was diluted to 250
1. 0 answers
2. 641 views
If a current of 3.00 A is applied to a cell containing a 400g copper anode, determine the final mass of the copper anode after
1. 1 answer
2. 590 views
If a solid state lithium battery produced 5.00 mA in 8.25 h, then the mass, in milligrams, of lithium consumed would be?
1. 1 answer
2. 552 views
A rock is thrown straight up at 22.0 m/s from a roof of a 30.0 m tall building. After rising, the rock falls on the street
1. 2 answers
2. 1,555 views
Two numbers add up to 20. The sum of their square is 20 less than 3 times their product. Formulate equations and find the
1. 1 answer
2. 491 views
5. A grating with 400 lines per mm is illuminated with light of wavelength 600.0 nm.(a) Determine the angle at which the maxima
1. 1 answer
2. 1,173 views
From a group of 10 people, 5 men and 5 women, six are to be chosen to serve on a committee.a) In how many ways can the committee
1. 3 answers
2. 1,102 views
how does a rodeo star get around?
1. 13 answers
2. 3,243 views
Two tetrahedral dice are thrown; one is red and the other is blue . The number on which each lands is noted, the faces being
1. 1 answer
2. 1,356 views
Fe2O3 + Fe + H2SO4 → FeSO4 + H2OHow would I balance this using oxidation numbers? Is the Fe2 being reduced and the Fe being
1. 1 answer
2. 835 views
Two buckets of sand hang from opposite ends of a rope that passes over an ideal pulley. One bucket is full and weighs 110 N ;
1. 1 answer
2. 1,270 views
in a class, 3/5 of the girls and 1/6 of the boys wear spectacles. If 3/4 of those who are wearing spectacles are girls, what
1. 1 answer
2. 557 views
-1.4b + 10= -18
1. 1 answer
2. 282 views
Pineapple has high requirements for the fertilizer elements nitrogen (N), potassium (K), and iron (Fe), and relatively low
1. 1 answer
2. 588 views
How do I find the vertical and horizontal asymptotes off(x)= (x+2)/(5x^2) Wouldn't one of them be (I,-I)? How do I solve this?
1. 1 answer
2. 609 views
Find the volume of the solid obtained by rotating the region under the graph of the function f(x)=2x+1 about the x-axis over the
1. 1 answer
2. 973 views
The scale model of a rectangular patio will be enlarged by a scale factor of 2.5 to create the actual patio. The actual patio
1. 1 answer
2. 838 views
A roulette wheel has 38 slots, numbered 0, 00, and 1 to 36. Two slots are green, 18 of the others are red, and 18 are black.a)
1. 1 answer
2. 1,829 views
One phone company charges $12 per month plus $.05 per minute after the first 500 minutes. A second phone company charges $10 per
1. 1 answer
2. 698 views
Is this sentence punctuated correctly?At elementary school, my teacher delighted in handing me worksheets crowded with row upon
1. 10 answers
2. 659 views
If a cost of a function is C(x) = (49 ln x) / (28-3x), find the marginal cost when x = 7
1. 2 answers
2. 355 views
The curves y=sinx and y=cosx intersects twice on the interval (0,2pi). Find the area of the region bounded by the two curves
1. 0 answers
2. 622 views
A student was required to prepare 250.0 mL of a hypochlorous acid/sodium hypochlorite buffer in which the concentration of the
1. 1 answer
2. 918 views
I am given triangle EDF with angles E and F being congruent. What is the perimeter of the triangle if ED= 2x+8, EF= 3x-6, and
1. 1 answer
2. 675 views
Carl is looking to buy a farm. While looking at a potential property, Carl wants to know the height of the silo. He measures a
1. 1 answer
2. 510 views
Find the point on the curve y^2=4x closest to the point (8,0).My Work: Using the Distance formula- my answer i got was
1. 3 answers
2. 513 views
Find the point on the curve y^2=4x closest to the point (8,0).My Work: Using the Distance formula- my answer i got was
1. 3 answers
2. 544 views
A rectangle is inscribed into the region bounded by the graph of f(x)=(x^2-1)^2 and the x-axis, in such a way that one side of
1. 3 answers
2. 1,233 views
2/11 * 264 = 528/11Is the answer correct?
1. 1 answer
2. 401 views
5/7 * 9/10 = 9/14Should my answer be 45/70 or 9/14?
1. 2 answers
2. 374 views
Show that "¬p Λ q is logically equivalent to p → ¬q" . I'm not sure if the conditional identity is correct, but what I did
1. 3 answers
2. 868 views
A proton, traveling with a velocity of 6.8 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 8.6
1. 0 answers
2. 571 views
A proton, traveling with a velocity of 6.8 × 106 m/s due east, experiences a magnetic force that has a maximum magnitude of 8.6
1. 0 answers
2. 560 views
Benzene reacts with hot concentrated nitric acid dissolved in sulfuric acid to give chiefly nitrobenzene, C6H5NO2. A by-product
1. 1 answer
2. 962 views
A saturated solution is made by dissolving 0.252 g of a polypeptide (a substance formed by joining together in a chainlike
1. 1 answer
2. 1,350 views
A saturated solution is made by dissolving 0.325 g of a polypeptide (a substance formed by joining together in a chainlike
1. 3 answers
2. 776 views
Benzene reacts with hot concentrated nitric acid dissolved in sulfuric acid to give chiefly nitrobenzene, C6H5NO2. A by-product
1. 6 answers
2. 960 views
At 21.0 °C, a solution of 23.71 g of a nonvolatile, nonpolar compound in 30.64 g of ethylbromide, C2H5Br, had a vapor pressure
1. 3 answers
2. 705 views
A solution of acetic acid, CH3COOH, has a concentration of 0.218 M and a density of 1.00 g mL-1. What is the molality of this
1. 2 answers
2. 2,273 views
A mixture of ammonia and oxygen is prepared by combining 0.250 L of NH3 (measured at 0.700 atm and 20°C) with 0.160 L of O2
1. 2 answers
2. 576 views
Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from
1. 1 answer
2. 1,346 views
How many milliliters of O2 are consumed in the complete combustion of a sample of hexane, C6H14, if the reaction produces 325 mL
1. 3 answers
2. 2,222 views
A mixture of ammonia and oxygen is prepared by combining 0.330 L of NH3 (measured at 0.790 atm and 22°C) with 0.210 L of O2
1. 1 answer
2. 848 views
When a sample of neon with a volume of 683 mL and a pressure of 0.792 atm was heated from 19.0 to 76.0 °C, its volume became
1. 3 answers
2. 487 views
Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from
1. 7 answers
2. 656 views
A mixture of N2, O2, and CO2 has a total pressure of 928. torr. In this mixture the partial pressure of N2 is 31.0 cm Hg and the
1. 1 answer
2. 638 views
24) It was found that a 20.00 mL portion of a solution of oxalic acid, H2C2O4, requires 6.69 mL of 0.200 M K2Cr2O7 for complete
1. 2 answers
2. 1,920 views
18) Aspirin is a monoprotic acid called acetylsalicylic acid. Its formula is HC9H7O4. A certain pain reliever was analyzed for
1. 1 answer
2. 1,336 views
12) Naturally occurring argon is composed of 0.3365% of 36Ar (atomic mass, 35.9675 u), 0.0632% of 38Ar (atomic mass, 37.9627 u),
1. 3 answers
2. 1,214 views
13) Mercury is an environmental pollutant because it can be converted by certain bacteria into the very poisonous substance
1. 3 answers
2. 2,599 views
14) A lawn fertilizer is rated as 7.04% nitrogen, meaning 7.04 g of N in 100 g of fertilizer. The nitrogen is present in the
1. 1 answer
2. 754 views
How many grams of water could have its temperature raised from 25 ºC (room temperature) to 100 ºC (the boiling point of water)
1. 2 answers
2. 966 views
Some time ago, a U.S. citizen traveling in Canada observed that the price of regular gasoline was 0.771 Canadian dollars per
1. 1 answer
2. 797 views
Use an enthalpy diagram to calculate the lattice energy of CaCl2 from the following information. Energy needed to vaporize one
1. 3 answers
2. 7,115 views
In the spectrum of a specific element, there is a line with a wavelength of 656 nm. Use the Rydberg equation to calculate the
1. 1 answer
2. 1,194 views
Microwaves are used to heat food in microwave ovens. The microwave radiation is absorbed by moisture in the food. This heats the
1. 6 answers
2. 2,456 views
How much methane, in grams, must be burned to release 542 kJ of heat? H=-802kJ
1. 1 answer
2. 3,210 views
How much heat (in kilojoules) is liberated by the combustion of 7.01 g of magnesium? Include the sign in your answer. H+-1203kJ
1. 1 answer
2. 531 views
When 4.76 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the temperature of the water rose
1. 4 answers
2. 1,077 views
An unsecured astronaut is floating in deep space. He switches on a hand held drill. The drill bit begins rotating clockwise with
1. 1 answer
2. 683 views
if 60% of students in the class were wearing sport shoes and 40% dress shoes, does it mean that everybody in the class were
1. 1 answer
2. 504 views
comparing and contrasting why is sodium hydrogen carbonate an effective antacid but sodium hydroxide is not?
1. 1 answer
2. 521 views
A small block on a frictionless surface has a massof 70 g. It is attached to a massless string passing through a hole in a
1. 3 answers
2. 727 views
The probability of Joe is at work is 49%. The probability Joe is at home is 25%. What is the probability Jow is neither at Work
1. 1 answer
2. 490 views
A card is drawn at random from a full pack of playing cards. It is not put back. A second card is then drawn from the same pack.
1. 1 answer
2. 522 views
Suzie (of mass 76 kg) is roller-blading downthe sidewalk going 12 miles per hour. She notices a group of workers down the
1. 1 answer
2. 861 views

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