1. The problem gives the following information: "<span>a" varies jointly with "b" and "c" and inversely with "d".
2. You have that the values of "a", "b", "c" and "d" are:
a = 400
b = 16
c = 5
d = 2
</span>
3. Keeping this on mind, you must calculate the constant of proportionality "k", as below:
a=kbc/d
3. When you clear "k", you have:
k=ad/bc
k=(400)(2)/(16)(5)
k=10
4. Therefore, you have:
a=kbc/d
a=10bc/d
The answer is:
a=10bc/d
For this item, i go with letter D. Rational. The hat size cannot be integers as it includes negative numbers. For instance the person's hat size is 7 + 5/8 which leads to an answer of 7.625. That is a rational number.
Answer: 54 feet.
Step-by-step explanation:
Ratio between a tree's height and its shadow's length = x : 72ft
Ratio between man's height and his shadow's length = 6ft : 8ft = 3 : 4
In order to solve this problem, we have to cross multiply the two ratios (image)
So, 4x = 216.
By solving this equation we learn that x = 54ft
So, the tree is 54 feet tall.
I am not a professional, simply using prior knowledge.
Note- It would mean the world to me if you could mark me brainliest!
The answer is B
1cm = 100km
d cm= 135km
d= (135x1)/100
d= 135/100
d= 1.35
Answer:
<em>2(∛6 ) </em>
Step-by-step explanation:
∛12 × ∛ 4 = = ∛48 = = <em>2(∛6 )</em>