1 cubic meter of concrete has a weight of 2400 kg. 15% of the concrete is water. The rest of the ingredients are cerment, sand and stone. The weights are in a ratio of 1:2:5. Work out the weight of cement, sand and stone in the 1 cubic meter of concreteHelp me please i have a test coming up

Step-by-step explanation:

2400 × 0.15 = 360

2400 - 360 = 2040

2040 × 1/8 = 255 kg of Cement

2040 × 2/8 = 510 kg of Sand

2040 × 5/8 = 1275 kg of Stone

To check if it is right

255 + 510 + 1275 = 2040 kg

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°