3 years ago

Need help with this i genuinely dont get this whole lesson

Mathematics

1 answer:

Anna35 [415]3 years ago

5 0

Answer:

top left

Step-by-step explanation:

If you look at both equations they both have 2x in them. This makes it easier to eliminate x. To eliminate x we must subtract the second equation from the first (because 2x - 2x = 0).

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All the items on the sale rack were 75 percent off their original price.

tresset_1 [31]

Answer:

112 $ is the original price

Step-by-step explanation:

$x \times 0.75 = 84 \\ x = 84 \div 0.75 \\ x = 112$

you have to think that the original price multiplied by 0.75 (also known as 75%) gave the result of what he saves i.e 84 $. So we put up an equation with the original price multiplied by 75% which equals the 84 $ he saved on buying that item on sale

4 0

3 years ago

Which of the following methids would be the easiest to slove 3x^2-4x-2=0

lys-0071 [83]

Using the Quadratic Function, Such Means x = - b + or - the square root of - 4 a c over 2 a.

After you do it you would get the answer :

Hoped I Helped, Have A Great Day :)