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Mathematics 18 Online
OpenStudy (coolcat64):

help need now!!!

OpenStudy (coolcat64):

A cook needs to make enough cookies for 150 students. The cookie recipe make 1 1/4 dozen cookies. How many batches does the cook need to make if each student gets one cookie?

OpenStudy (coolcat64):

@AaronAndyson

OpenStudy (coolcat64):

@Sachintha

OpenStudy (coolcat64):

?????????

OpenStudy (sachintha):

How many cookies does the cook make in one batch?

OpenStudy (coolcat64):

1 1/4

OpenStudy (sachintha):

Nope. 1 1/4 dozen

OpenStudy (coolcat64):

yeah thats what i meant

OpenStudy (sachintha):

So \(1\frac{1}{4} * dozen= \frac{5}{4}*12 = 15 \)

OpenStudy (coolcat64):

ok ty

OpenStudy (coolcat64):

1 + 1.1 + .11 + 11.1 =

OpenStudy (sachintha):

So divide no. of students from the no. of cookies made from one batch to get the no. of batches needed.

OpenStudy (coolcat64):

Is it 13.31

OpenStudy (coolcat64):

for the other question that i just asked

OpenStudy (sachintha):

Yeah you are correct. :)

OpenStudy (coolcat64):

what expression is equivalent to 3x + 6y?

OpenStudy (coolcat64):

A. 3(x + 2y B.3( x +3y) C.9xy D.18xy

OpenStudy (coolcat64):

is it c

OpenStudy (coolcat64):

ohhhh ok

OpenStudy (coolcat64):

An automobile travels 471 miles in 8 1/2 hours.

OpenStudy (sachintha):

Previous one had a mistake. It's \(3(x+2y)\)

OpenStudy (coolcat64):

What is the average speed of the automobile to the nearest mile per hour

OpenStudy (sachintha):

\[Speed ~= ~\frac{distance~ travelled}{time~ taken}\]

OpenStudy (coolcat64):

ok

OpenStudy (coolcat64):

the distance travelled is 471 miles

OpenStudy (coolcat64):

time taken is 8 1/2

OpenStudy (coolcat64):

hours

OpenStudy (sachintha):

\[=\frac{471}{8\frac{1}{2}}\] \[=\frac{471}{\frac{17}{2}}\] \[=\frac{471}{17}*2\]

OpenStudy (sachintha):

Is it clear?

OpenStudy (coolcat64):

what should i do now?

OpenStudy (sachintha):

Did you understand how I simplified it?

OpenStudy (coolcat64):

is it 55

OpenStudy (sachintha):

Yes

OpenStudy (coolcat64):

i will contact you when i need more help but thanks

OpenStudy (sachintha):

Sure. You are welcome. :)

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