Posts by abel

Total # Posts: 37

Science
What Is Enzymes

water site constraction management
calculate the quatity of concrete ingredints for the following volume. i) for 3mcubi ,grade c-15,c-20,c-25 assume that the mix could be done by hand and machine and the size of the box ?

Algebra
-4x-y=-5

math
8 Given that = 0.4307 and = 0.6826, without using mathematical tables or a calculator, evaluate

SCIENCE
TIME GRAPH

PHYSICS
A swimmer is capable of swimming at 1.4m at still water.caculate how far downstream will it smim across 180m?

Math
Where does the parenthesis go to make the equation true 5+4*3-1=18

math
an agriculture field is rectangular, with dimensions 100m by 42m.a 20 m deep well of diameter 14 m is dug in a corner of the field and the earth taken out is spread evenly over the remaining part of the field.find the increase in the level of the field

math
what is the evaluation of 5!

algebra 1
Amanda bought a car for \$8,500. Her loan was for five years at a 4.6% interest rate. How much will Amanda pay for her car total, including interest?

math
Adam earned 60 points in a video game. He lost 50 points earned 67 points,then lost 20 more points. Write and evaluate an expression yo find his final score in the video game

Chemistry
analysis of a sample of an organic compound showed it to contain 39%,carbon 6.9% hydrogen and 53.2% oxygen.caculate the emperical formular

physics

Math
A, find domain each function, locate any intercept, also based on graph find the range and ? F(x) 2x of x not equal to zero

maths
write the following expression ,if possible, as apolynomial in the form a, (xcube - xfourth + 2x +1)-(xfourth + x cube - 2xraised2 +8

daynamics
detrmine the maximum vertical displacment d of apan of negligable mass is attached to two identical springs of stiffness k=250n/m and a10 kg box is dropped from aheight of 0.5m above the pan

English
His Nobel prize acceptance speech in 1989

English
Who was the audience for the Dalai Lama speech? How did speaking in front of this group affect the Dalai Lama's message?

Geometry
Find the volume of the square pyramid. Round your answer to the nearest hundredth.

Geometry
How does the volume of a rectangular prism change if the width is reduced to   of its original size, the height is reduced to of its original size, and the length is reduced to of its original size?

Biology
ponerese

Algebra
a sub 1 = 30 r = 3/5 S = (r) / (1-r) S = {(30ft) / [(1)-(3/5)]}(3/5) S = 150ft / 5-3 = 150ft / 2 = 70ft

physics
This was actually a multiple choice question. The answer given was 450J. I'm guessing, they added the weight to frictional force. But thing is, the object moved horizontally, so how could one just do this -> (100+50) x 3.

physics
An object of mass 10 kg is pulled along a horizontal floor of a distance 3 m. The friction force between the object and the floor is 50 N. What is the minimum work done by the pulling force?

Chemistry
2.2865

physics
A cannon is used by the department of forestry to launch containers of fire retardant on to a fire. the cannon is at a distance of 1kilometre from a cliff that is 0.5kilometre high from the ground and the fire is 1kilometre away from the base of the cliff. if the retardant ...

math
The boy silkworm

math
Calculate the value of pie is 22 over 7,3,142

math
Solve each system of linear equations by both graphical and algebraic line 1 x+2y=4 line 2 x-y=0

math
Use algebraic method to solve line 1 x+4y=14 line a 3x+2y=12

math
A math equation I need to solve is 4n-19=13.

nutrition
in America --million children live in poverty .