Wednesday

July 30, 2014

July 30, 2014

Total # Posts: 42

**Math**

Jabari is thinking of three numbers. The greatest number is twice as big as the least number. The middle number is three more than the least number. The sum of the three numbers is 75. Find the numbers.

**Science**

Mutations can occur in sex cells or in body cells. In which cell type might a mutation be passed from generation to generation? Explain.

**Science**

Mutations can occur in sex cells or in body cells. In which cell type might a mutation be passed from generation to generation? Explain.

**Math**

The base of a parallelogram is 10 inches.The height is 2 inches more than half the base.Find the area.

**Science**

What are two ways meiosis can cause genetic variability?

**Science**

Could you please explain meiosis in stages including interphase 1 (crossing over)? I need to understand this for a project at a 7th grade level.

**French**

Find the verb in the sentence. Elles sont timides francaises.

**math**

At the Kolbus building 3 out of every 7 employees use public transportation. There are 9,800 employees at the building. How many use public transportation?

**Math in Science**

A rock containing a newly discovered fossil is found to contain 5 mg of an unstable form of potassium and 5 mg of the stable element formed from its decay. If the half-life of the unstable form of potassium is 1.3 billion years, how old is the rock? What can you infer about th...

**CHEMISTRY**

18cm^3 of 1.0M H2SO4 just reacted with 24cm^3 of 1.5M NaOH to form sodium sulfate & water. Calculate the amounts in moles of sulfuric acid & sodium hydroxide reacting & write an equation for the reaction.

**math**

If b=6 what is the value of 7b?

**math**

Use proportions to solve this problem: Lisa ran 3 miles in 21 minutes. At that rate, how long would it take Lisa to run 5 miles?

**Math**

Thank you both!

**Math**

Twelve students sit for an exam which has a maximum score of 100. The average of twelve scores achieved by the students in the exam was 95. What is the minimum mark a student could have scored?

**math**

1/4v=5 Use the substitution method to solve this problem.

**Math**

Thank you I missed a lesson in class today so I was a little lost.

**Math**

Expand the following expression. 3(m+2) + 4(6+m)

**Math**

Solve. There are 18 boys in a class. There are w fewer boys than girls. How many students are there in the class?

**Math**

The sum of 5y/6 and 4(3/y+2y) y=7

**Math**

Can you arrange the numerals 1 to 9 (1, 2, 3, 4, 5, 6, 7, 8 and 9) in a single fraction that equals exactly 1/3 (one third)? Could someone explain how you get the answer to the problem, please don't just say the answer!

**chemistry**

i was given an equation of H2SO4(1)+ Na2CO3(s)>>> Na2SO4(s)+CO2(g)+H2O(l) I tried plugging in numbers and I don't understand what I am supposed to do. the first beaker had 1g of Na2CO3 and added 20ml of 3M H2SO4 to the beaker. empty beaker 47.42g beaker with 1g an...

**chemistry**

i have 2 questions stoichiometry loss of CO2 1. record the amount of CO2 produced vs the amount of Na2CO3. I did 7 beakers with 20ml of 3M H2SO4 and add varying amounts of Na2CO3 to each. 2. discuss your results in terms of moles. is there a linear relationship between the amo...

**physics**

Soko

**Math**

How would you graph this x^2-9/x+5? I keep on getting a weird looking function.

**Physics**

Also by composition it means what the objects are made out of right? So if they are Aluminum then they would be a conductor of heat?

**Physics**

Can please explain to me why that is?

**Physics**

Does the composition of an object affect the final temperature of in objects. This is in terms of thermal equilibrium.

**Chemistry**

Balance the following redox reaction in acidic solution: H3PO4 + HNO2--> N2O4 + H3PO3

**Algebra**

Solve the linear equation: -10.8x + 1.4 = -47.6 - 1.0x If you could do step-by-step so I may learn this it would be appreciated. Thank you!

**Algebra**

Identify the slope and the y-intercept for y=-4x+5. Thank you!

**Trig**

Determine the period of the function: f(x)=3sin1/2x+2 ?

**math**

explain whether each set is closed under the given operation {-1,0,1}multiplication?

**math**

explain whether each set is closed under the given operation {-1,0,1}multiplication?

**math**

explain whether each set is closed under the given operation {-1,0,1}multiplication? please help and tell me the steps thanks!

**Calculus**

Find the derivative of y=(2x²+x)²°°.

**Geography**

Please can you tell me whether the north italian plain or the south of italy would have a) hydro-electric power available b) few natural resources. I cannot find the answers to them. One answer goes on north and one on south. Please help.

**geography**

I need to find a major industry in the north italian plain. I have typed it in a few search engines but I have yet to find an answer. Please help.

**english**

would you say pittance or meagre is the best word to use.

**Science/History**

On my previous post at 3.22pm (& 3.29pm) pm I asked what famous scientists did Isaac Newton work with. Unfortnately no-one has answered and I have been unable to find a website that tells me. I have come across Edmund Halley name linked to Newton's would he be a scientist ...

**science**

I am doing a project on Isaac Newton and have to find info on born,died,study, famous scientists he worked with,apple and laws of motion. I have found all the answers except the famous scientists he worked with. I have been on lots of websites but I cannot find one which says ...

**Math 156**

A child's dose of medicine is 16 of a pre-measured dose cup. If the bottle of medicine is the size of 9 dose cups, how many children's doses are there in the bottle?

**maths - shapes**

Can you name these quadrilaterals? a) All sides are the same length, opposite sides are parallel, angles are not 90 degrees. b) Two pairs of touching sides are the same length. The diagonals meet at right angles. Opposite sides are not parallel. c) The diagonals bisect each ot...

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