Help me ASAP! Will give brainliest to whoever answers these correctly.

Mathematics

1 answer:

hammer [34]3 years ago

5 0

#9. There are 180 degrees in a triangle. We already know two of the sides which added together make 112. Then we do, 180-112=68

#10. We do the same process. 90 + 60 = 150
150-180= 30

#11. To find whether or not any three numbers can make a triangle, two of the numbers must equal more than the remaining number. But this has to be the case for any combination. 6+7=13. 13 is larger than 11. So yes it can.

#12. 8+2=10 which may be bigger than 6 but, 6+2=8. Which is equal to 8. So no, it cannot make a triangle.

I’m still working out the first question

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a concession stand is selling hot dogs and hamburgers during a game. at halftime they sold a total of 78 hot dogs and hamburgers

lara31 [8.8K]

Let x=number of hamburgers sold and y=number of hot dogs sold.
Step 1)
cost of burgers X # of burgers + cost of hotdogs X # of hotdogs=$ collected 1.5x + 1.25y=105.5

step 2)
# of burgers sold + number of hot dogs sold = total number of items sold
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step 3) solve for y in the second equation
y = 78 - x

step 4) substitute y = 78 - x in the first equation for the value of y and solve for x
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step 5) plug in our value for x in the second equation and solve for y
x+y=78
32+y=78
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answer 32 hamburgers and 46 hot dogs

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alexgriva [62]

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