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Posts by ava

Total # Posts: 177

math
What is the product of the complex numbers (-3i+4) and (3i+4)? I've forgotten how to do this...

Math
480 Ha! I didn't know it was that easy, thank you

Math
To get a driver's license, an applicant must pass a written test and a driving test. Pasts records show that 80% of the applicants pass the written test and 60% of those who have passed the written test pass the driving test. Based on these figures, how many applicants in ...

Math
A map uses a scale of 3/4 cm: 10 miles. If 2 cities are 4 cm apart, what is the actual distance?

Psychology Final Exam 2
Check my answers? 17. A _________ is the functional unit of the nervous system. (1 point) Neuron******* Dendrite Head Cell body 18. The Central Nervous System consists of the __________ and __________. (1 point) heart and blood vessels muscles and tendons axons and dendrites ...

Psychology Final Exam
Check my answers? Thank you, in advance! 1. When we learn to understand the mind and feelings, we can also learn to ________ and _________ behavior. (1 point) predict and control********* understand and explain eliminate and forget explain and describe 2. Phrenology is based ...

Psychology
1. Describe the structure of a neuron and explain the function of each of its major parts. I dont want anyone to answer FOR me, but I really need help on where to start. If you could help, I would greatly appreciate it.

algebra
Write the equation of the line perpendicular to the given line and passing through the given point: y=3x−2 through (3,4) this problem is really hard for me can you please show and tell how you got your answers thanks,:)

graphing
sorry

graphing
sory typo in top this is what i did and i got it wrong

graphing
I also have another question: Write the equation of the line parallel to the given line and passing through the given point. y=6 through (3,4) this is what i did and i got it wrong 4=24+b -20=b y=6+(-20) i did the same way of solving for this problem y=x+5 through (8,1) 1=8+b ...

graphing
I am having tuble with this problem: Graph the line given by the formula y=2x+3. Using the graph, find: The value of y corresponding to the value of x equal to −1; 2; 3; 5 I don't really know how to find the answer can you guys give me the answer and explain how you ...

Maths
Alan and George receive some money in the ratio 2:5. The total received was £490, how much did George get?

Math
A sum of money was shared amount Aaron, Ben, and Charles in the ratio 2:5:7 If Charles's share was $1,180 more that Aaron's share, what was the oringinal sum of money shared?

Math
I randomly throw 2 darts at a board of 15 balloons. 4 are purple, 3 red, 4 blue, 2 yellow and 2 green. What is the probability of hitting two purple balloons?

american government
thanks

Geometry
I have another question that stumped me Line segment AB with length a is divided by points P and Q into three line segments: AP , PQ, and QB , such that AP = 2PQ=2QB. Find: A)the distance between point A and the midpoints of the segments the segment QB B) the distance between ...

Geometry
I am doing 7th grade algebra, and my homework is due by 9:00 and I don't know how to solve this question: Find the measures of supplementary angles 1 and 2 if, A) m angle 1 is less than m angle 2 by 40 degrees B) m angle 1:m angle 2=5:4 Please help soon my class starts at ...

Math
What is total area of land in square miles if field is 1.5 miles wide and 1 mile long?

Science
Ur Right Mia:D..Good luck ~Ava

history
Mark the statement if it describes an event in the period of time leading to napoleon's final defeat at waterloo. A. Napoleon raises an army and tries to defeat the allies B. parisians welcome napoleon back to the capital.

Chemistry
A solution of 0.211 M NaOH is used to titrate 24.0 mL of a H2SO4 solution. If 19.0 mL of the NaOH solution is required to reach the endpoint, what is the molarity of the H2SO4 solution? H2SO4(aq)+2NaOH(aq)→2H2O(l)+NaSO4(aq)

Chemistry
A CaCl2 solution is given to increase blood levels of calcium. If a patient receives 5.0 mL of a 5.0 % (m/v) CaCl2 solution, how many grams of CaCl2 were given?

Check my answers? Science
The order of events and ages of rocks by examining positions is *relative dating*. Gaps in rock layers are called *unconformities*. What uses properties of atoms to find ages of rocks? *Absolute Dating*. A life form in Precambrian Time was *Cyanobacteria*. What signaled the ...

Chemistry
I'm not sure how to do these...I keep getting the wrong answers... Please help someone... Mg(s) + 2 HCl(aq)= MgCl2 (aq) + H2(g) a. What volume of 15.7 M hydrochloric acid will react with 2.1 grams of Mg? b. What mass of magnesium will react with 8.5 liters of 0.7 M ...

Math
The length of a rectangle is equal to triple the width. Find the dimensions of the rectangle if the perimeter is 72 cm

Math
Thanks

Math
The legs of a right triangle measure 24 feet and 45 feet. What is the length of the hypotenuse? A. 51 ft** B. 69 ft C. 38.07 ft D. 8.31 ft I think A

math
Use synthetic division to evaluate the polynomial function for the given value of x. f(x)= 2x^5-x^3+7x+1, x = 3

Spelling
Leave is to left as bring is to

algebra
what is the slope of the line that passes through the pair points (-7/2,-3)and (-5,5/2)? so far i did m=5/2-(-3) / -5-(-7/2)=11/2 / -3/2 i don't know the rest Im finished my math homework but not this question and class starts in 15 minutes please help me!!!!

fractions
38/53 in the simplest form

Science
How can you describe the location of magnesium (Mg, atomic number 12) periodic table? A. nonmetal B. metalloid C. group2, period3 D. group3, period 2 @Ms.Sue My answer is C. Can you check my answer Thank you

Science
@DrBob222

Science
Which process of the carbon cycle is responsible for the release of carbon at the power plant, as shown by the arrow? A. combustion B. photosynthesis C. digestion D. decomposition @Ms.Sue can you check my answer I think the answer is A.

Math
Question 31 explained he went camping with his family for 7 days. 5x8=40 5x7=35 40-35=5 5 bottles of water before the trip.

Science
inheritance

Physics
an automobile travels 3 miles due north then 5 miles north of east. what is your resultant displacement?

Math
tell me if you got it right.

Chemistry
How many moles are in 1.59 kg of sodium?

Civics
What portion of the Congress or the states must support proposing an amendment to the Constitution for consideration? One-half Three-fifths One-fourth Two-thirds

Math
Jack brought 2 quart of motor oil. His car took 1quart and another half quart. How many cups of oil does he have left?

Math
Jack brought 2 quart of motor oil. His car took 1quart and another half quart. How many cups of oil does he have left?

physics
A tennis ball (mass 57.0 g) moves toward the player's racquet at 46.4 m/s. It is in contact with the racquet for 3.60 ms, after which it moves in the opposite direction at 49.8 m/s. What is the average force on the ball due to the racquet? (Assume the ball is moving in the...

physics
In a game against the White Sox, baseball pitcher Nolan Ryan threw a pitch measured at 44.8 m/s. If it was 18.4 m from Nolan's position on the pitcher's mound to home plate, how long did it take the ball to get to the batter waiting at home plate? Treat the ball's ...

math
opps its a while later

math
answer is c I did test too

Physics
A box is pulled along a level floor at a constant speed by a rope that makes a 45 degree angle with the floor. The box weighs 100N. The coefficient of sliding friction is 0.75. The normal force exerted on the box by the floor is?

Physics
Fg = mg Fg = (11.0)(9.81) Fg = 107.91 N Sin x/1 = Fg parallel/Fg Sin 25.0/1 = Fg parallel/107.91 Cross multiply (107.91)sin(25) = 45.6 N ≈ 46 N *(≈ <-- is an approximation symbol)

Physics
Fg = mg Fg = (11.0)(9.81) Fg = 107.91 N Sin x Fg parallel ------ = ------------- 1 Fg Sin 25.0 Fg parallel --------- = ------------- 1 107.91 Cross multiply (107.91)sin(25) = 45.6 N ≈ 46 N *(≈ <-- is an approximation symbol)

math
How do you solve/simplify 32x^3y^4. 3X Over. Times 24x^3y^2. 9Y

NEED Math HELP please!!!
Thank you so much

NEED Math HELP please!!!
Can you help me solve for y? 8x-4xy=3 -2x-5y=10

math
How do you solve for y? 8x-4xy=3 And -2x-5y=10

science
biolgist concludes that a molecule moves across cell membrane by facilitated diffusion because the molecule is small, polar and can accumulate inside cells even when its concentration inside the cell initially is higher that it is outside the cell and they use up more energy ...

science
1. What allows a cell to stockpile substances in greater concentration than they occur outside the cell? is it active transport? 2. The sodium potassium pump prevents the accumulation of what ions inside the cell? 3. Conduction of nerve impulses is possible because of what? ...

science
need help few questions 1. a signaling cell produces a signal that is detected by what type of cell? 2. If the interior of a typical cell is negatively charged, what type of charged ions will not require energy to diffuse into the cell using an ion channel? 3. Receptor ...

Physics
Mark uses 27 J of work to carry the laundry basket with a force of 17 N. What is the distance he carried the laundry basket?

science
biolgist concludes that a molecule moves across cell membrane by facilitated diffusion because the molecule is small, polar and can accumulate inside cells even when its concentration inside the cell initially is higher that it is outside the cell and they use up more energy ...

science
1. What allows a cell to stockpile substances in greater concentration than they occur outside the cell? is it active transport? 2. The sodium potassium pump prevents the accumulation of what ions inside the cell? 3. Conduction of nerve impulses is possible because of what? ...

science
need help few questions 1. a signaling cell produces a signal that is detected by what type of cell? 2. If the interior of a typical cell is negatively charged, what type of charged ions will not require energy to diffuse into the cell using an ion channel? 3. Receptor ...

biology
biolgist concludes that a molecule moves across cell membrane by facilitated diffusion because the molecule is small, polar and can accumulate inside cells even when its concentration inside the cell initially is higher that it is outside the cell and they use up more energy ...

biology
1. What allows a cell to stockpile substances in greater concentration than they occur outside the cell? is it active transport? 2. The sodium potassium pump prevents the accumulation of what ions inside the cell? 3. Conduction of nerve impulses is possible because of what? ...

biology
need help few questions 1. a signaling cell produces a signal that is detected by what type of cell? 2. If the interior of a typical cell is negatively charged, what type of charged ions will not require energy to diffuse into the cell using an ion channel? 3. Receptor ...

Math
0,1,and 2

computer literacy
The Internet is BEST described as a vast

math
2groups of 5

Math
How do you identify the vertex of y= xsquared + 16x+64

math
If a person walks 21 feet in 7 seconds how long does it take to walk 180 feet

biology
why is time considered the variable instead of being considered the result/answer?

biology
doing a biology project and they want us to figure out how long it takes to cook 6 different foods at 5 different temperatures and gather 30 separate data points. They want us to identify an x(independent) and a y(dependent) variable that can be recorded on a table. Would x be...

science
doing a biology project and they want us to figure out how long it takes to cook 6 different foods at 5 different temperatures and gather 30 separate data points. They want us to identify an x(independent) and a y(dependent) variable that can be recorded on a table. Would x be...

English
Expanded noun phrases are actually simple if you look at them in context! Here is an example of a noun phrase: There was a barn owl. expanded noun phrase: There was a majestic barn owl. Its putting a noun before the adjective.

Math
Simplify M^3 n^6 / m^4 n^4 p^-2

Chemistry
How many grams of sodium acetate, NaC2H3O2, would have to be added to 5.00 L of 0.65 M acetic acid (pKa 4.74) to make the solution a buffer for pH 4.00? I did this but it's not the right answer: 4 =4.74 + log(A/.65) 0.74=log(A/0.65) 10^-0.74= A/0.65 0.182 = A/0.65 0.118= A...

chemistry
(0.930atm*0.393L)/(0.0821*298)= 0.0149mol 0.0149mol/0.393L= 0.038 -log(0.038)= 1.42 what did I do wrong?

social studies (check answers)--Mrs.Sue
Sorry, i meant number 2 on the last one

social studies (check answers)--Mrs.Sue
Number 3 is C:redirection of oil wealth to provide social services.

social studies (check answers)--Mrs.Sue
Number 3 is D: the search for fossil fuels.

Math
When I did it I got y=3/4x+9 1/2... Did u get that also ?

Math
Write an equation in slope intercept form of the line that is perpendicular to the given line and that passes through the given point 3x-4y=8 ; (-6,5)

Math
For f(x)=3x+2. Find f(4)

Math
A model plane flies 18 ft per 2 seconds. What is the planes speed in miles per hour? Round to the nearest tenth.

math..help again
Got it.... Thanks so much!!!

math..help again
A photo lab manager graphed the cost of having photos developed as a function of the number of photos in the order. The graph is a line with a slope of 1/10th that passes through (10,6). Write an equation in slope-intercept form that describes the cost to have photos developed.

math
So if slope intercept form is y=mx+b what would this equation look like for this word problem? Thanks

math
A photo lab manager graphed the cost of having photos developed as a function of the number of photos in the order. The graph is a line with a slope of 1/10 that passes through (10,6). Write an equation in slope-intercept form that describes the cost to have photos developed. ...

math
solve for A B=3/8(A-10)

math
yes. the equation is c = 6u^2v...solve for v sorry...thanks

math
Solve for v: C=6u2v

Math - please help
Ling is three times as heavy as her packed suitcase. Her suitcase is 20 pounds heavier than her knapsack. The weights of Ling, her suitcase, and her knapsack total 170 pounds. How much does each weigh? Identify a variable, set up an equation, and solve. Thanks so much

Math
Ling is three times as heavy as her packed suitcase. Her suitcase is 20 pounds heavier than her knapsack. The weights of Ling, her suitcase, and her knapsack total 170 pounds. How much does each weigh? Identify a variable, set up an equation, and solve. Thanks so much

Chemistry Urgent
Assuming that kerosene is C11H24, calculate the standard enthalpy change when 1 mole of kerosene burns completely in oxygen, using the data below: ΔH of formation of C11H24(l) = -327 kJ mol ΔH of formation of CO2(g)= -394 kJ mol ΔH of formation of H2O (l)= -286 ...

math
In new Your a taxi costs 72 cents for the first 1/10th of a mile and 15 cents for every additional 1/10th mile. How much does it cost to drive 6 miles? Set up and solve? I do not understand how you got this answer...can you explain? .72+ .15(6-.1).1 = $9.57 When I work the ...

math
In New York a taxi costs 72 cents for the first 1/10th of a mile and 15 cents for every additional 1/10 mile. How much does it cost to drive 6 miles? Set up and solve? Thanks

Math
Julia and Kevin are playing games at the arcade. Julia started with $15, and the machine she is playing cost $.75 per game. Kevin started with $13, and his machine costs $.50 per game. After how many games will these two kids have the same amount of money remaining? Set up an ...

Chemistry - DrBob222
It did help. Thank you very much :-)

Chemistry - DrBob222
C6H14 + Cl2 in UV light Below are 5 products, say which one cannot be a product, prove this by showing how each of the other products were formed from the equation above. 1-chlorohexane 2-chlorohexane 2,2-dichlorohexane dodecane hex-1-ene

Chemistry urgent
C6H14 + Cl2 in UV light Below are 5 products, say which one cannot be a product, prove this by showing how each of the other products were formed from the equation above. 1-chlorohexane 2-chlorohexane 2,2-dichlorohexane dodecane hex-1-ene

Chemistry Urgent
1) 30cm3 of methane and ethane mixed with 100cm3 of O2 at RTP. Explosion occurs, on cooling 61.5cm3 remained. Find the percentage by volume of each gas in the mixture 2)32cm3 of a mix of CO2, CH4 and H2 mix with 50cm3 of O2 and exploded after cooling to RTP, volume noted is ...

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