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Mathematics 7 Online
OpenStudy (anonymous):

Can someone help me with Algebra 1 ? Medal and fan ?

OpenStudy (anonymous):

what's up?

OpenStudy (anonymous):

Okay so i have a couple of questions .. first one is ; The length of the base of a triangle is 6.6 cm and its height is 4.9 cm. If the area of the triangle is half of the product of its base length and height, the area of the triangle is __________ cm2. (Round your answer to the appropriate significant digits)

OpenStudy (anonymous):

6.6*4.9/2 should be your asnwer

OpenStudy (anonymous):

which is 16.17 rounding to sig figs of 2 gives you 16cm2

OpenStudy (calculusxy):

It is what dajakesta said

OpenStudy (anonymous):

calculusxy, can you help me with my question?

OpenStudy (calculusxy):

Ok will try

OpenStudy (anonymous):

Number 2 ; Btw thank you guys so much ! Kevin plans to put concrete on a rectangular portion of his driveway. The portion is 10 feet long and 3 inches high. The price of concrete is $98 per cubic yard. The total cost of the concrete Kevin needs is $72.59. Which of the following is closest to the width of the portion of the driveway on which Kevin plans to put concrete? [1 foot = 12 inches; 1 yard = 3 feet] 3 feet 6 feet 8 feet 10 feet

OpenStudy (anonymous):

ok so you have to convert all measurements into yards

OpenStudy (anonymous):

be right back with my question

OpenStudy (anonymous):

I tried that :/ I came up with a weird answer & Okay (:

OpenStudy (anonymous):

uhm it's ok if the answer is weird because you have to deal with 10/3 giving some strange number. Also what contributes to it is how many yards of concrete Kevin bought

OpenStudy (anonymous):

I probably sound really stupid but I can't figure out the answer :(

OpenStudy (anonymous):

ok I dont have paper with me right now i'll help you asap (when i get paper)

OpenStudy (anonymous):

Thank you so much (:

OpenStudy (anonymous):

well basically he bought 72.59/98 cubic yards of concrete

OpenStudy (anonymous):

find the yards of how much concrete he has for the length and width

OpenStudy (anonymous):

use how much he bought and divide by your surface area

OpenStudy (anonymous):

I got C. but i think it's wrong

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