Seven pipes empty a water tank in five days. In how many days would four pipes empty this tank? Which date of the year sees the longest day? How many digits exist in the binary system of numbers? Circles sharing the same centre are called…? What is the volume of a cube which has edges measuring 5cm? Which Greek mathematician is often referred to as the 'father of geometry'? 'For every action there is an equal and opposite reaction' is one of Newton's Laws of motion, which number law?

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation:

do i do it on a graph?

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

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to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.