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Harman [31]
3 years ago
13

2n-7/3 = 15 solve for n

Mathematics
1 answer:
WITCHER [35]3 years ago
5 0
2n- \frac{7}{3} =15 
2n- \frac{7}{3} =15  common denominator is 3
3(2n- \frac{7}{3} )=3*15 distributhing  3 through parantheses
3*2n- \frac{3*7}{3}=3*15
3*2n-7=3*15
6n-7=45   add7
6n=45+7
6n=52 divide by 6
n= \frac{52}{6} simplify
n=8 \frac{2}{3} ⇒ \frac{26}{3}
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Answer:

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Step-by-step explanation:

Factor the equation

x^2 - x - 30 = 0 ----> (x-6)(x+5)=0

Next find the solution by setting those in the paranthesis equal to zero.

x-6=0 ----> x= 6

x+5=0 ----> x= -5

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3 years ago
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△WPJ∼△DNJ<br> What is PWPW ?<br> Enter your answer in the box.
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Use <em>CPCTC</em> and make ratios and proportionalities to find the value of segment PW:

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\frac{WP}{DN}= \frac{PJ}{NJ} 

Substitute the values that are given in the diagram.
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Solve for x. You can do it by cross-multiplication.

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Step-by-step explanation:

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