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3 years ago

40% is NOT equivalent to....? A. 0.4 B.2/5 C.40/100 D. 0.04 E. None correct

Mathematics

2 answers:

tino4ka555 [31]3 years ago

8 0

Answer:

Step-by-step explanation:

40% = 40/100 = 0.4 =2/5

GalinKa [24]3 years ago

4 0

Answer: D

A is correct because when you convert 40% into a decimal the results will be .40 or .4

B is correct because 2/5 as a percent is 40%. It's like having 5 questions on a quiz and you get 2 right and 3 wrong. That means your grade is 40%.

C is correct because 40/100 means the decimal will be .4. 40÷100 will equal .4 which means 40/100 is also 40%.

D is incorrect due to the fact when you convert it to a fraction it'll be 4/25. When converting it to a percent the result will be 16%.

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3 years ago

Use the graph to write a linear function that relates y to x .

sergiy2304 [10]

Answer:

2y = x + 2

Step-by-step explanation:

Looking at the graph, we can see from one point to the next (from right to left), the x-value rises by 2 and the y-value by 1;

From this we can work out the gradient between two points using the formula, i.e. the change/difference in y divided by the change/difference in x:

$m = \frac{dy}{dx} = \frac{1}{2}$

Joining the points gives a straight line, which means a constant gradient of ¹/₂

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3 years ago