Answer:
6km
Step-by-step explanation:
get 30,000 in km so divide by 100 to get it to metres then divide by 1000 for km. that gives you 0.3km per cm. 0.3 x 20 = 6
You can find out BD by using cosine formula which turns out to be 9 cm. Then apply pythagoras theorem on triangle CDA with AD = 5 (14 - 9), to obtain 13 the length of AC. Hence after adding up all the sides perimeter is 42.
Answer:
45 to 18 it's easy
Step-by-step explanation:
subtract 18 from 63 and there is your ratio
Answer:
7x^2+21x+14
Step-by-step explanation:
With this all we have to do is foil:
first outside inside last
first: 7x^2
outside: 14x
inside: 7x
last: 14
we now combine them to
7x^2+14x+7x+14
we add like terms
7x^2+21x+14
Answer:
first option
Step-by-step explanation:
Using the rule of exponents
= then
= =