Top answers

Sasha has a bag containing 12 red beads, and 8 blue beads. She draws one bead from the bag at random. What is the probability that it is blue?

There are 12 + 8 = 20 beads in the bag in total.If sasha draws a bead at random then she has 8 chances out of 20 possible beads that the bead is blue. So the probability that the bead is blue is 8/20 = 2/5
AW
Answered by Alexander W. • Maths tutor
8650 Views

Where does the water come from that is given off when making an ester?

One hydrogen (-H) from the alcohol group (-OH) on the alcohol breaks off and joins with the alcohol (-OH) group that breaks off of the carboxylic acid (-COOH). So the -H from alcohol joins the -OH from carbo...
HP
Answered by Hannah P. • Chemistry tutor
8867 Views

What are two ways which the body cools itself down when too hot?

Vaso-dilation: blood vessels near to the skin's surface dilate which allows more heat to be lost. This is because more blood can flow through as there is more room in the lumen. Sweating: the hotter we are, ...
HP
Answered by Hannah P. • Biology tutor
16124 Views

How to solve a simple simultaneous equation

Solving simultaneous equations: Example Question: Equation 1 ---> 2y – 4x = 2Equation 2 ---> 4y – 6x = 10 Find the unknown quantities, x and y. Solution: Step 1: Firstly check whether there are more th...
NK
Answered by Nivedah K. • Maths tutor
5840 Views

What is the difference in pronouncing 'ß' and 'ss'?

'ß'- examples: Sp a ß; gr o ß- the vowel before the ß, is pronounced longer 'ss'- examples: e ssen, K a sse, R u ssland, verg e ssen, b e sser- The vowel before the 'ss' is pronounced shorter It is also know...
NK
Answered by Nivedah K. • German tutor
6087 Views