# Posts by Anonymous

Total # Posts: 109,294

**Math**

sqrt (x) = 6 x x = 36 x^2 but may introduce false solution along with correct one 36 x^2 -x = 0 x(36 x -1) = 0 x = 0 or x = 1/36 x = 0 works, 0 = 0 if x = 1/36 1/6 = 6/36 yes that also works so x = 0 or x = 1/36

**Math 6b**

yes, 1/2 * 1/6 = 1/12

**Science**

F = m a F = 90*.5 = 45 N so I agree with you Maybe they are rounding to one significant figure because they say 0.5 and not 0.50 ?

**Math**

check it (It works :)

**Math**

well, the highest power is 2 to get x-2 out of this (1x^3-3x^2+1x+2)/(ax^2+bx+c) = [ x - 2 + (-2x+4)/(ax^2+bx+c)] so multiply [ x - 2 + (-2x+4)/(ax^2+bx+c)] by (ax^2+bx+c) = -2x+4 -2 (ax^2+bx+c) +x (ax^2+bx+c) = 4-2c -2x-2bx+cx -2ax^2+bx^2 +ax^3 which has to be x^3-3x^2+x+2 so...

**math**

1 - probability of yellow 1 - 2/16 14/16 7/8 So it turns out I agree :)

**Math**

75

**math**

maybe: y(x) = 2 x + 4

**science**

initial energy = (1/2)m v^2 + m g (10) = m(.5 v^2+98.1) final energy = m(98.1) so 98.1 = .5(.5v^2 +98.1) 2(98.1) = .5 v^2 + 98.1 .5 v^2 = 98.1 v = sqrt(2*98.1) v = about 14 m/s

**science**

50 * 2*10^3 = 10^5 Joules

**Math-age problem**

43 67

**Math**

j = 20.281718

**algebra**

If the length of each edge of the prism is cut by 13 , the surface area will be 13 of the original surface area.

**algebra**

If the dimensions of the rectangular prism are doubled, the surface area will increase 4 times.

**algebra**

If the dimensions of the rectangular prism are increased 4 times, the surface area will increase 8 times.

**Math**

E(m) is earnings as a function of number of times m E(m) = 20 m

**Physics**

1.16 m is tiny compared to the radius of 1.06*10^3 meters so I will assume g is constant for part (a) m g = G m M/r^2 g = 6.67*10^-11 (1.95*10^13)/(1.06^2*10^6) = 11.6*10^-4 m/s^2 d = (1/2)gt^2 =1.16 for part (b) the kinetic energy + potential energy at the bottom = potential ...

**American government check my answer**

That is ok, we did not need it :) Thanks anyway. The other answers apply to another president entirely.

**American government check my answer**

LOL, I do not see your excerpt but have to agree with your answer.

**American government check my answer**

agree with both

**American government check my answer**

It is not B or D. If the people in the photo are Asian in 1800s laborer garb it could be A If it is people from many places in 1920s garb it could be C depends on what is in the picture.

**Probability ,math**

permutations 4! = 4*3*2*1 = 24

**math **

You're planning on making 4 meatloafs for a party. You go to the store to buy breadcrumbs, and see they are sold by the canister. How many canisters do you need to buy? •How much breadcrumbs does the recipe call for? It calls for 1 1/4 cups of breadcrumbs. 1 canister ...

**Algebra**

4 x^3/2x^2 = 2x 10 x^2 /2 x^2 = 5 3 a/2x^2 = (3/2) a/x^2 {which is 1.5a x^-2} now add (distributive property) 2x + 5 + 1.5 a x^-2

**makes no ense**

Your passage seems not to relate to the questions.

**math **

Which of these glasses contains more liquid? Glass A contains about twice as much as glass B Glass A contains about 20% more than glass B Glass A and B contain about the same amount Glass B contains about 20% more than glass A Glass B contains about twice as much as glass A

**math**

the volume of the canister is pi r^2 h = pi * 1.75^2 * 7 = 67.35 in^3 the volume of a cup is 14.44 in^3 so the canister contains 67.35/14.44 = 4.66 cups so a cup of crumbs weighs 15/4.66 = 3.2 ounces

**math **

You're planning on making 4 meatloafs for a party. You go to the store to buy breadcrumbs, and see they are sold by the canister. How many canisters do you need to buy? •How much breadcrumbs does the recipe call for? It calls for 1 1/4 cups of breadcrumbs. • How ...

**LA plz help**

Yes, "shown in his earlier novels" gives the answer away. Yes, the word "humor" pops up repeatedly.

**GEOM B**

yes, two triangles with base 7.8 and altitude 3 hmm area of one of the six triangles = (1/2)(15)(13) = 97.5 times 6 = 585

**pre-algebra, math**

total costs c(x)= 3,000 + 10 x i(x) = 50 x p(x) = i(x) - c(x) = (50-10)x - 3,000 = 40 x - 3,000 40(100) - 3,000 = 1,000 0 = 40 x - 3,000 x = 300/4 = 75

**math**

Which of these glasses contains more liquid? Glass A contains about twice as much as glass B Glass A contains about 20% more than glass B Glass A and B contain about the same amount Glass B contains about 20% more than glass A Glass B contains about twice as much as glass A

**math **

Out of 250 racers who started the marathon, 233 completed the race, 14 gave up, and 3 were disqualified. What percentage did not complete the marathon?

**Science**

A cave explorer is surveying the cave. He follows a passage 100m straight east, then 50m in the direction 30degree west of north, then 150m at 45degree west of south. After fourth unmeasured displacement he finds himself back where he started. Whats the fourth displacement? In...

**physics**

A sandal is dropped from the top of a 15.0-m-high mast on a ship moving at 1.75 m/s due south. Calculate the velocity of the sandal when it hits the deck of the ship: (a) relative to the ship and (b) relative to a stationary observer on shore. (c) Discuss how the answers give ...

**Ela Helppp!**

Of course there is no need to believe me. Read it carefully.

**Ela Helppp!**

no

**Ela Helppp!**

I believe so.

**Ela Helppp!**

"from line fourteen; To wake at dawn with a winged heart". Joy

**2836?**

Perhaps you mean before and after Texas joined the United States.

**social studies**

Make a guess and count gods before asking us.

**english**

what are similes in the poem gathering leaves by Robert frost

**social studies**

Similar to Pan American but to the east.

**math**

a conductor having a cross sectional area of 0.00161 sq. in. carries a current of 4.5 amp. Calculate the electron velocity, assuming the wire to be a copper.

**business mathematics**

You are planning to go to Europe 4 years from now and have agreed to set aside RM200 each month for trip. If you deposit this money at the end of month into savings account paying interest at the rate of 8%/year compounded monthly, how much money will be in your travel fund at...

**Algebra**

Of the pupilsin the class,50%have black hair and 25%have blonde hair33%aregirls and 67%areboys.which of the following is definitely true...The blonde haired pupils are all boys....Some boys have black hair...Some blonde haired pupils are girls ...Some girls have blonde hair ...

**Physics**

Remember displacement and velocity are vectors. Include the direction. tan(angle east of north) = distance east/distance north

**Geometry**

Use a translation rule to describe the translation o P that is 4 units to the left and 8 units down

**Trig**

Find the derivative using the product rule. {sqrt(x+8)}*(x^2+20x) (x+8)^1/2(2x+20) minus (1/2)(x+8)^-1/2(x^2+20x) I'm not feeling confident I am on the right track and I have a quiz tomorrow over this.

**Yes, physics**

h = (1/2) g t^2 h = (1/2)(9.81) (6.56)^2 on earth

**chemistry**

40 mL of 0.150 M ammonium hydroxide is added to 20 mL of 0.3 M perchloric acid. What is the final pH of the resulting solution?

**economics**

identify three decisions that you {micro}have made recently

**math**

A swimming pool has a base 10 m by 12 m. Water evaporates from the pool at a constant rate of 10 liters per hour. Find the amount of water lost in one week and the change of depth in one week.

**Language**

Determine which of the following is a statement of fact from the reading selection The Hindenburg

**Math **

In a scale drawing the length of a rectangular room is 6 inches, and the width is 3 inches. The actual length of the room is 18 feet. What is the scale of the drawing?

**Math**

30/100 + 5/100 = 35/100 but 35/100 = 7/20

**Math**

Well is it closer to 600 or to 700?

**Math**

were 18 and 9 so I am 9 years older than sister 82 - 9 = ?

**Science**

Thank you

**Science**

Would it be d instead?

**Science**

A biologist studying a desert ecosystem observes that the population of a lizard species increases following a particularly hot, dry period that causes a snake population to decline. What could the biologist hypothesize about the roles of these two species? A.The lizard preys ...

**Science**

Thank you

**Science**

So is it nonpoint source

**Science**

Fertilizers And Pesticides Applied To Farm Fields In Pennsylvania Have Their Way Down Into The Chesapeake Bay In Maryland This Is An Example Of __________ Pollution. Answer: I was thinking it is either nonpoint source or point source

**math-precalculus**

A wheel with radius 5 cm is being pushed up a ramp at a rate of 6 cm per second. The ramp is 540 cm long, and 260 cm tall at the end. A point P is marked on the circle as shown (picture is not to scale). wheelonramp.gif 1. Traveling at 8 cm/sec, how long does it take the wheel...

**Algebra 2**

so that means it would always be decreasing?

**Algebra 2**

Dewight needs to restrict the domain of the cosine function so that the inverse is a function. Which description best describes how she could restrict the domain? A) So that y = cos(x) is always decreasing B) So that y = cos(x) only has one maximum <my choice C) So that y...

**Algebra 2**

Find f o g. f(x) = x2 - 5x + 6 g(x) = x + 3 A) x2 + x B) x2 - 4x + 9 C) x2 - 5x + 9 <my choice D) x3 - 5x2 - 9x + 18

**History**

oh i think i see now

**History**

What was one effect of the Great Depression in cities and towns? more people on welfare **my answer soup kitchens victory gardens drought relief

**math-precalculus**

I should be more specific about that sin or cos function arguement sin or cos (2 pi t/T) but we know that T is pi seconds so (2 t)

**math-precalculus**

it goes 2 pi r cm in one revolution 2 pi (3) = 6 pi cm in a revolution 6 pi cm (1 second/6 cm) = pi seconds per rev B. 3 cm C. 6 cm *150/730 D. (6 cm *150/730)t I have no idea where point P is but it is the center height from part D + a sin or cos function of time depending on...

**math-precalculus**

Please help.. A wheel with radius 3 cm is being pushed up a ramp at a rate of 6 cm per second. The ramp is 730 cm long, and 150 cm tall at the end A: Traveling at 6 cm/sec, how long does it take the wheel to complete one rotation? B: What is the initial height of the center of...

**Algebra 2 **

If f(x)= x2 + 2x - 6 and g(x)= 3x2 - 5x - 7, find f(x)-g(x). A) -2x2 - 3x + 1 B) -2x2 + 7x + 1 C) -2x2 - 3x - 13 <my choice D) 4x2 - 3x - 13

**Help pls urgent**

A disk of radius 30 cm is spinning about it axis at 60rmp it deacelerate at a constant rate of 2.0 rad/s^2 until it reaches 20 rpm A find the initial and final angular speed in radians per sec B fine the time it takes to deacelerate from the initial to the final angular speed ...

**Physic help **

A disk of radius 30 cm is spinning about it axis at 60rmp it deacelerate at a constant rate of 2.0 rad/s^2 until it reaches 20 rpm A find the initial and final angular speed in radians per sec B fine the time it takes to deacelerate from the initial to the final angular speed ...

**Physics help pls**

A spherical bowling ball radius 0.1 m and mass4.0 kg is rolling without slipping to ward the ball rack assume h=0.45m the liners sped at the bottom of the step is 2.85 m/s A find moment of interia of the ball B find the total kinetic energy st the bottom of step C find the ...

**PHYSICS**

A cord can b streated to it elastic limit by 2N.if a 35m of d cord by 0.6 By a force of 0.5n wat wil b d L wendforce2.5n

**physics**

A tennis ball with a velocity of 30.0 m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a velocity of -8 m/s to the left. If the ball is in contact with the wall for 0.010 s, what is the average ...

**Trig help**

I might have found the answer

**Trig help**

Which of these is equivalent to 3?/5 rad ? A) 108° B) 150° C) 216° D) 300° I'm thinking A

**La**

1. C 2. A 3. A I got 100%

**chemistry 20**

Lab: Determining the Quantity of Vitamin C in Fruit Juice Vitamin C, also called ascorbic acid, is commonly found in commercial fruit juices and drinks. In this activity you will analyze data collected from a titration analysis of a fruit juice. The nutrition facts for a 200-...

**Trig help**

Find the cos(?) of an angle in standard position if the terminal side passes through the point (4, -8). -2 -2/sqrt5 1/sqrt5 2 I think it is C but I am not so sure.

**HEALTH**

yes you are correct

**precalculus**

A wheel with radius 3 cm is being pushed up a ramp at a rate of 6 cm per second. The ramp is 730 cm long, and 150 cm tall at the end. How far does the wheel travel in one rotation?

**physics 1**

I think you'll have to use the formula T=2(pi)sqrt(L/g) where g is the gravitational acceleration

**Science**

Gain = output/input

**Science**

Nathalie pushes on the pedals of his bike with a 320N force. If the bike has a produced force of 640N, what is the mechanical gain of the bike?

**Algebra**

Beltre has made 13 hits in 52 at bats for a batting average of .250. Beltre goes on a hitting streak and makes x hits out of the next 3x at bats. Beltre expects to have a total of 100 turns at bat this season. What function describes Beltre's batting average during this ...

**Math**

Sorry! I meant"how many five digit odd numbers are there"?

**Math**

How many five digit are numbers there?

**Tom**

If you draw a diagram it would be clearer, but I'll try to explain it Initial velocity u=0, since it is dropped down an incline (I assume, usually is) Final velocity v=5m/s (given) We are given m=3kg. We can use this to deduce the weight of the mass. W=mg=3*10=30N The ...

**you also need an angle**

then you can use law of cosines to find a diagonal and you have two triangles. (if you just have the 4 lengths and no angle, the shape is not uniquely determined.)

**Math**

4.5 lb * 16 oz/lb = 72 oz 72 oz/12 students = 6 oz/student

**Calculus**

A = angle light is from straight at wall x = distance along waall from that point A = angle from that point then tan A = x/25 d(tan A)/dt = sec^2 A dA/dt = (1/25)dx/dt what we want to know is dA/dt, the turning rate so sec^2(15) dA/dt = (1/25)(1.5) solve for dA/dt, the turning...

**Marketing**

In your own words, explain how buying behavior of business customers in different countries have been a factor in speeding the spread of international marketing.

**genetic variation and biotechnology**

A. they will probably die because they have the same genes.

**genetic variation and biotechnology **

a species of organism only reproduces asexually. due to a change in the environment, some organisms are starting to die. predict how the other organisms of the species will do? a. they will probably die because they have the same genes. B.other organisms are likely to survive ...

**SS**

In what major way did conflict in the Middle East affect the economy in the United States? A. Conflict in the Middle East caused a sharp drop in energy prices in the United States. B. Conflict in the Middle East disrupted U.S. exports to that region, an important part of the ...