# Posts by Ara

Total # Posts: 9

**Álgebra**

135'

**Math**

672cm square

**Maths Problem**

Need Help Dan and Ellen started jogging at the same time along the route shown below. Both did not change their speeds throughout. after 35 min, Dan was at the halfway point and Ellen was 300 metres behind. Dan reached the end point 5 min before Ellen. What was the distance of...

**Math**

2. A rectangle whose perimeter is 80 m has an area of 384 m^2. Find the dimensions of the rectangle. Solve it as a polynomial.

**Math**

The length of a rectangle is 11 cm more than its width. The area of the rectangle is 2040 cm^2. Find the dimensions of the rectangle.

**Algebra 2**

-4x^2-2-3 Put the equation in vertex form and find the vertex

**math**

a bullet of mass m,with speed v,hits a fixed wooden block and penetrates a distance of l.find the average resistance of the wood.

**math**

a bullet of mass m,with speed v,hits a fixed wooden block and penetrates a distance of l.find the average resistance of the wood.

**CHEMISTRY**

if 16r of METHANOL are reacted wtih an excess of PBr3, how many grams of CH3Br would be formed if there is a 25% yield? eqn; CH2OH + PBr3 --> CH3Br + H3PO3

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