Friday

April 18, 2014

April 18, 2014

Total # Posts: 43

**Math**

1. Suppose you want to buy concrete for a 36ft by 24 ft by 9 in. patio. If concrete costs $55/yd^3, how much will the concrete for the patio cost? 2. A cylinder has a volume of about 500 cm^3 and a height of 10 cm. What is the lenght of the radius to the nearest tenth of a cm?

**Math**

Susan designed a circular pool with a diameter of 25 meters. What is the area of the bottom of the pool? Round to the nearest tent. Please help this is due tomorrow and I need to up my grade.

**math**

i have a question that i am unable to answer: in a load of 3/4 ton of steel rods 1/8 of them are bent . How many tons of steel rods are bent?

**MATH**

DEREK PLANTED A GARDEN IN THE SHAPE OF A SQUARE 32 FEET ON EACH SIDE. THE GARDEN HAS A STREAM ON ONE SIDE, BUT HE PLANS TO BUILD A FENCE ON THE OTHER THREE SIDES. IF HE PUTS A FENCEPOST EVERY 8 FEET, HOW MANY POSTS WILL HE NEED

**trig**

A mountain road makes an angle θ = 8.4° with the horizontal direction. If the road has a total length of 3.4 km, how much does it climb? That is, find h.

**Statistics**

I have another Stats question i'm confuesed on. classify the sample as random, systematic, covenience, stratified, or cluster. A marketing executive fo General Motors finds that its public department has just printed envelopes with the names and addresses of all Corvette o...

**Statistics**

I have a question about one of my Stats vocab questions. any help is great. thanks! Identify the type of observational study as either Cross-sectional or retrospective (just a reminder, Cross-sectional is data measured at one point in time, retrospective is data collected from...

**Statistics**

does some one mind checking my work? it's real simple Stats vocab. thank you! Determine whether the given description corresponds to an observational study or an experiment: (just as a refresher, observational means passive and experiment means active) 1.)much contoversy a...

**statistics**

Using the central limit theorem, construct a 95% confidence interval for the average total cry time for infants in the control group and infants in the intervention group. For this question only, assume that the standard deviation of cry time within each group is known and is ...

**Science**

i posted this earlier, but no one answered. so i'll try again. Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the sys...

**PHYSICS ~so confused~**

so i'm going to try my hardest to type this out. which of the following system of forces provides the block the highest net force? a.) 11N--->[box]<---71N b.) 405N--->[box]<---403N c.) 227N--->[box]<---153N d.) 22.7N--->[box]<---15.3N I thought this...

**Physics-please check my work**

please?? this is due in an hour!

**Physics-please check my work**

Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the system: *FALSE 4.) A force can not exist without an agent and a system...

**Science HELP PLEASE**

A mouse pushes a piece of cheese with a mass of 6.4 g for a distance of 75 cm over a frictionless surface. He exerts a constant 0.5 N force as he does so. If the cheese starts from rest, what is it's final velocity?

**phsical science **

what is the period of a string that vibrates with a frequency of 20 times per second

**math**

Use structure What property of addition is shown in the following number sentence. Explain

**math**

a certain variety of strawberry plant sends out an average of 5 new runners per plant each year. If you planted 20 of these plants, how many strawberry plants would you have after 4 years?

**social studies**

DBQ underground railroad

**Algebra 2**

What is three root 1/3 ? I'm not sure if that looks right in words, but I don't know how to post the square root symbol. If that doesn't make sense, then pretend that this sign: % is a square root: 3 %1/3 The 3 looks like it's a little above it. Please help me....

**Algebra 2**

What is three root 1/3 ? I'm not sure if that looks right in words, but I don't know how to post the square root symbol. If that doesn't make sense, then pretend that this sign: % is a square root: 3 %1/3 The 3 looks like it's a little above it. Please help me....

**grade 8 math**

72

**Economics**

B Cross-price elasticity of demand = Percentage change in quantity demanded of good 1 / Percentage change in the price of good 2 I did the work and that's what I got.

**math**

thanks i knew that!

**math**

What might you have if you don't feel well? letters are e, g, o, v, o, s, n, l

**math**

what is 4 divided by 2 2/3?

**Math**

What is the reduced fraction of 8/15?

**Physics**

A hammer taps on the end of a 4.20 m long metal bar at room temperature. A microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are separated in time by 5.45 ms. What is the spe...

**physics**

How much work must you do to push a 13 kg block of steel across a steel table (\mu_{{\rm k}}=0.6) at a steady speed of 1.3 m/s for 2.6 s?

**8th grade**

(18 - (-4))divide (-11) (-4) + 2

**physics**

Part A. With what minimum speed must you toss a 190 g ball straight up to hit the 12 m-high roof of the gymnasium if you release the ball 1.5 m above the ground? Solve this problem using energy. Part B. with what speed does the ball hit the ground?

**physics**

a 1300 newton crate slides 14 meters down a ramp that makes an angle of 30 degree with the horizontal. if the crate slides at a constant speed, how much thermal energy is created?

**chemistry **

calculate the number of atoms in 10.0g of sulfur

**english**

which word is the noun in the sentence,"I like to horseback ride."

**Math**

What do we call the numbers that cannot be arranged into 2-row arrays?

**math**

sum of two numbers is 42.Their difference is 6.What are the two numbers?

**math**

Find the slope and y-intercept. x=-9

**math**

Is –4 a solution to the equation 8x – 6 + 3x = 5 + 2x – 10

**math**

Solve the system by substitution.x-5y=2 ,2x+3y=17

**for Drbob222**

Sorry bit thick, why do you multiply equation 2 by 2?

**for Drbob222**

thanks but i do need help to solve the third part also, I did get these equations but don't know how to put them together to solve the third. thanks for helping further!

**Maths**

yeah can you help me to put the two equations together? I did get the equations for the first two questions but don't know what to do with them to get the third. thanks

**Maths**

3 part question. 1. 4 peaches and 3 grapefruit cost £1.30. Write down an algebraic equation to illustrate this. 2. 2 peaches and 4 grapefruit cost £1.20. Write down an algebraic equation to illustrate this. 3. Find the cost of 3 peaches and 2 grapefruits Please help!

**Physics**

19200

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