Answer:
.
Step-by-step explanation:
We need to write an equation for the amount of chemical B as a function of the amount of chemical A.
...(1)
where, k is constant of proportionality.
It is given that fifteen grams of chemical A is used to produce 3 grams of chemical B. It means a=15 and b=3.
Substitute a=15 and b=3 in (1).
Substitute 
in (1).
Therefore, the required function is .
Answer:
=−16t^2+75
Step-by-step explanation:
Answer:
y = 4.5 x
Step-by-step explanation:
Answer:
£78.97
Step-by-step explanation:
The average train ticket for the journey, including cycle storage costs and food and drink,<u> costs £134.26</u>. A coach company claims that it is <u>£55.29 </u><em><u>cheaper</u></em><u> than this</u>. How much does the coach trip cost?
Cheaper = -
So 134.26-55.29=78.97
Answer:
B) 25°
Step-by-step explanation:
Assuming the quadrilateral is the one shown in the picture attached, then a triangle ADC is form, where m∠ADC = 125° and m∠1 = 30°. The addition of the three angles of a triangle is equal to 180°, so:
m∠ADC + m∠1 + m∠2 = 180°
Replacing with the known values and isolating m∠2 we get:
125° + 30° + m∠2 = 180°
m∠2 = 180° - 125° - 30°
m∠2 = 25°
