Answer:
7 minutes
Step-by-step explanation:
1000 stairs in 25 minutes
280 stairs in 280*25 / 1000 = 7 minutes
Since A number line going from 1 to 2 with 5 equal spaces between 1 and 2the number represented by point B is 1⁴/₅
The question has to deal with proportion
<h3>What is proportion?</h3>
Proportion is the measure of a variable or quantity relative to another.
<h3>How to calculate which number represents point B?</h3>
Since A number line going from 1 to 2 with 5 equal spaces between 1 and 2, the measure of a sub-unit between 1 and 2 is
= 1/5
So, each sub-unit measure 1/5
Since point B is one mark to the left of 2, we have that point B is y = 2 - 1/5 = (10 - 1)/5
= 9/5
= 1⁴/₅
So, the number represented by point B is 1⁴/₅
Learn more about number and proportion here:
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Anything what i can do for you?
Order of operations
PEMDAS
parenthasees
exponens
mulitpicatpon
diviosn
additon
subtraciton
firs timplify parethasees
7*1+8
mult first
7*1=7
7+8=15
nw we have
1/2*(15)+11
multiply 1/2 and 15 and get 15/2=7 and 1/2
then add 11
7+11=18
18 and 1/2 is answer or 37/2 or 18.5
I think it would be b or c