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3 years ago

Find the difference 15/12 - 3/4

Mathematics

2 answers:

sergejj [24]3 years ago

8 0

First you want a common denominator: 15/12 - 9/12. Simplify: 6/12 which is 1/2.

tamaranim1 [39]3 years ago

3 0

15/12-9/12. Simplify:6/12 which is 1/2

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3 years ago

In one month, a farm produces 1200 pounds of potatoes. In the following month,

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1200=100%

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3 years ago

9. If 65 student tickets were sold, how many adult tickets

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130

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4 years ago

MATH HELP PLEASE show WORK

ZanzabumX [31]

9514 1404 393

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4 0

3 years ago

What is :<br><br>(49^x)(7^x^2)=2401^2

ludmilkaskok [199]

$(49^x)(7 ^{x^2})=2401^2 \\ \\( (7^2)^x)(7 ^{x^2})= (7^4) ^2 \\ \\ 7 ^{2x}\cdot 7^{x^2}=7^{8} \\ \\ 7 ^{2x+x^2} =7^{8} \\ \\2x+x^2 =8$

$x^2-2x-8 = 0\\ \\ a=1, \ b=-2, \ c=-8 \\ \\\Delta =b^2-4ac = (-2)^2 -4\cdot1\cdot (-8) = 4 +32 =36 \\ \\x_{1}=\frac{-b-\sqrt{\Delta} }{2a}=\frac{2-\sqrt{36}}{2 }=\frac{ 2-6}{2}=\frac{-4}{2}=-2 \\ \\x_{2}=\frac{-b+\sqrt{\Delta} }{2a}=\frac{2+\sqrt{36}}{2 }=\frac{ 2+6}{2}=\frac{8}{2}= 4 \\ \\Answer: \ x=-2 \ \ or \ \ x=4$

7 0

3 years ago

Read 2 more answers