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Montano1993 [528]
3 years ago
6

Two oranges and five lemons cost $2.75. Two oranges and nine lemons cost $4.15. PART A) Write a system of equations and solve it

using the elimination technique. PART B) Using your solutions from part A, how much would five oranges and three lemons cost?
Mathematics
1 answer:
Brilliant_brown [7]3 years ago
7 0
A) 2o+5l=2.75
-2o-9l = -4.15
———————-
-4l=-1.4
l= 0.35

2o+5(0.35)=2.75
2o+ 1.75= 2.75
2o=1
O= 1/2

B) 5(0.5) + 3(0.35) = 2.5+1.05= 3.55
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Answer:

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Step-by-step explanation:

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with knowing that, you can manipulate that and turn it into 1 - sin^2x = cos^x

so 1-sin^2x/sinx - cscx becomes cos^2x/sinx - cscx

it is also important to know that cscx is the same thing as 1/sinx

knowing this information, cscx can be replaced with 1/sinx

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now sinx and 1/sinx do not have the same denominator, so we need to multiply top and bottom of sinx by sinx; it becomes....

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because we have a fraction over a fraction, we need to flip it

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because the cos^2x can cancel out, it becomes 1

now the answer is -sinx

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