Tuesday
July 22, 2014

Posts by evie


Total # Posts: 34

Math repost
I think it might be an error in the question, but thanks for trying at least I know it's not just me.

Math repost
trapezium ABCD, with AB and DC being parallel, with diagonal connecting A and C, angle ABC is 86, angle ADC is y, angle dac is 66 and angle bac is x, no angle given for bcd or bca or acd. find x and y, So I said that BCD is 94 deg, but then I get stuck I think I'm probably...

Math
trapezium ABCD, , with diagonal connecting A and C, angle ABC is 86, angle ADC is y, angle dac is 66 and angle bac is x, no angle given for bcd or bca or acd. find x and y why is the fourth angle 114?

Math
Really stuck on this question not sure where im going wrong a trapezium with top and bottom sides paralell. With a diagonal line running from the top left to the bootom right hand corner splitting the trapez into two triangles. the top left corner angle is formed by 66 deg and...

math
The average price of gasoline lately has been hovering lately at $3.80. What is the standard deviation if the probability that a gallon of gas costs less than $3.00 is 15%?

math statistic
The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.

Chemistry
5. A student has the following data: V1 = 822 mL, T1 = 75°C and T2 = -25°C. He calculates V2 and gets -274 mL is this value correct? Explain why or why not.

Chemistry
5. A student has the following data: V1 = 822 mL, T1 = 75°C and T2 = -25°C. He calculates V2 and gets -274 mL is this value correct? Explain why or why not.

Chemistry
What is the symbol for the element whose electron configuration ends with 4p6?

Chemistry
How many total atoms of all elements are present in an acetate ion?

Chemistry
What is the term given to different forms of any element that only vary in their number of neutrons?

Chemistry
What is the term given to different forms of any element that only vary in their number of neutrons?

chemistry
How many moles of sodium are equal to 5.72 x 1025 atoms?

physics
the mass of the boy is 70kg. calculate the force in newtons acting on the boy due to his deceleration. how do i work this out

Math
It usually takes 55 minutes to get from Lakewood to Oakdale. This morning the train is 10 minutes early. How many minutes did the trip take?

Math
Eva gives out two sheets of paper to each 30 students. She gives paper to 19 students and has to get more. Howany more sheets of paper does he need?

Chemistry
What is an ICE chart?

Chemistry
Determine the solubility of FeS at 25 degrees Celsius

chemistry
Here's the problem: You need to make 300L of 2.25M perchloric acid. It costs $25.95 for a 4.00 liter bottle of 60% HClO4, and $34.95 for a 4.00 liter bottle of 70% HClO4. Should you buy the 60% or the 70% bottles? Show your calculations and explain.

physics
If you throw a cigarette out a car window that is moving at 10 mph where will it land

physics
If you throw a cigarette out a car window that is moving at 10 mph where will it land

maths
Since the son's age is between 13 and 19, the father must be 43, so that if the son's age is x, 4300 + x – (43 – x) = 4289, so 2x = 32 and x = 16. So the sum of their ages is 43 + 16 = 59.

L.A
What is the effect of onomatopoeia in a poem?

math
3/6 or if you simplify it 1/2

L.A
Could only and other be an alliteration?

S.S
Was Kublai Khan esteemed by his subjects?

math
Suppose a rectangular box with 3cm height, 2cm width, and 5cm length was resting on a different face. How would this affect its surface area?

Math
If a rectangular box has A width of 2cm, a length of 3cm, and a height of 5cm, what is the surface area? Is it 62cm2?

4th grade
13yd = 39ft

calculus
s(t)=-16t^2+v(subscript0)t+(subscrpt0) a silver dollar is dropped from the top of a building that is 1362 feet tall. a) determine the position and velocity f'cn for the coin. b) determine the avg velocity on the interval [1,2] c) find the instantanous velocities when t=1 a...

Calculus
Thank you so much. I appreciate you taking the time to answer my question. = )

Calculus
Show that the rectangle with the largest area that is inscribed within a circle of radius r is a square. Find the dimensions and the area of the inscribed square. My respect goes to those who know how to tackle this one.

the big idea of energy
well . . . i have do it about rockpoools and how energy flows through the food chains xxx PLEASE HELP!!!!!!!

the big idea of energy
well . . . i have do it about rockpoools and how energy flows through the food chains xxx PLEASE HELP!!!!!!!

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