<span>According the information given we understand that the room is a regular rectangle, We know that volume = lenght * widht * height, so we start by calculate the room area as length by width, that is 16.4 * 4.5 = 73.8 square metres. Then with 3.26 metres of height, the total volum will 73.8 * 3.26 = 240.58 cubic metres.</span>
3x-14=4x-9
-4x -4x
-x-14=-9
-14 -14
-x=-15
-x/-1=-15/-1
x=15
Sorry if this is a bit confusing, but I hope I helped
Answer:
4
Step-by-step explanation:
when you multiply a number by itself, therefore you have to multiple 2twice
The number that represents what she got correct is 0.95, because 100-5=95, and because that the number will be 0.95, if she had gotten all correct the number would have been a full 1
1.
a.) The color of <u>Aqueous solution</u> turns <u>light green</u> from <u>blue</u>, due to formation of <u>iron sulphate</u> .
b.) The color of the <u>Aqueous solution</u> turns <u>colorless</u> from <u>blue</u> due to formation of <u>zinc sulphate</u>.
2. <u>Bells</u> used in temples aren't made up of wood because wood isn't <u>sonorous</u> and hence can't produce <u>ringing sound</u>, and hence metals are used in making bells.
3. <u>phosphorous</u> is kept in water because it is <u>highly reactive</u> and reacts vigorously with air if left free in atmosphere .
4.
a.) CuSO4 + Mg =》MgSO4 + Cu
this is a <u>single displacement reaction</u>, where <u>Magnesium</u> being more reactive than <u>Copper</u>, displaces copper from its compound (copper sulphate) to form <u>magnesium sulphate</u>.
b. H2SO4 + Zn =》ZnSO4 + H2
this is a <u>single displacement</u><u> </u><u>reaction</u>,
where <u>Zinc</u> being more reactive than
<u>hydrogen</u>, displaces hydrogen from its
compound (sulphuric acid) to form <u>Zinc</u><u> </u><u>sulphate</u>.
