Respuesta :

yerang20070105

#7: 19/100

#8: No

for #7, you can convert 57 cents into $0.57.

0.57 divide by 3 would be 0.19, which is 19/100

for #8, since square root of 225 equals to 15,

15×15 must be 225, not 215. therfore, its wrong.

rvkacademic

Answer:

Q7 19%

Q8 Justin's answer is  incorrect. The correct answer is 225 not 215. See explanation below

Step-by-step explanation:

Q6 Express 57 cents as a decimal fraction of $3.00 in its simplest form
First convert both values to a common unit. The easiest is to convert $3.00 to cents by multiplying by 100

$3.00 = 3 x 100 = 300 cents

Now find the ratio of 57 to 300 and express it as a percentage by multiplying by 100

% value = 57/300  x  100
= 57/3                  
= 19

Answer: 19%

Q7. Justin multiplied √225 by 15 and got a product of 215. Is Justin's answer correct

No. Justin's answer is incorrect

√225 = 15

So √225 x 15 = 15 x 15 = 225

Hence the correct answer should be 225 not 215

I hope that helps you.

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