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uranmaximum [27]

3 years ago

13

Cole made 5

1 answer:

Zepler [3.9K]3 years ago

5 0

Answer:

72

Step-by-step explanation:

His Mom got 5 necklaces with 12 shells each, so Cole used 5x12=60 shells on her necklaces. He then made one more for his sister, using another 12 shells. In total, he used 60 shells for his mom's necklaces and 12 for his sister's, equalling (60+12)=72.

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lutik1710 [3]

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Step-by-step explanation:

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We summarize (1) and (3):

$2a+2c=-2\ |:2\\a+c=-1\ \ \ \ \Rightarrow\\a+b+c=-2\\(a+s)+b=-2\\-1+b=-2\\b=-1.$

Substitute b=-1 into (2):

$9a+3*(-1)+c=0\\9a-3+c=0\\9a+c=3\ \ (5).\\$

From (5) subtract (4):

$8a=4\ |:8\\a=0,5.\ \ \ \ \Rightarrow\\$

Substitute a=0,5 into (4):

$0,5+c=-1\\c=-1,5.$

Hense:

y=0,5x²-x-1,5.

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2 years ago

Please help:<br> In Δ ABC, sin A=88, sin B=42, and a =17, find the length of b.

iren2701 [21]

Answer:

Step-by-step explanation:

Use the law of sines.

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Cross multiply.

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Step-by-step explanation:

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Angelina_Jolie [31]

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