Answer:
it increases by a factor of 10, hence option B is the answer
Step-by-step explanation:
Initial Figure = 2037
When it is moved one place to the left, it increases from tens to hundreds
Hence option B is the answer
Answer:
30 = 80 %
40= 20 %
Step-by-step explanation
I'm sorry for not writing how to do it but it's something like if 30 = 100 then if we had 40 occupying 20 percent of that acid then we will get 32 percent
Answer:
Step-by-step explanation:
1). Replace one equation with a multiple of itself.
2x + 7y = 3 ⇔ 4(2x) + 4(7y) = 4(3)
2). Yes, systems are equivalent.
Answer:
Approximately 3771 times
Step-by-step explanation:
Let x be the number of times the wheels turn in 5 miles.
Given that, 1mile = 5,280ft
Thus, 5 miles=5 × 5,280ft=26400ft
From the question ,we can deduce the following ratios :
140 ft : 20 mins
26400ft : x
Cross multiply;
Divide through by 140.
2/3x+1=5-8
Combine like terms:
2/3x+1=-3
Subtract 1 from both sides
2/3x=-4
Multiply 3x from both sides
2=-12x
Now divide -12 from both sides
=-2/12
Simplify and you get -1/6 for your answer
