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2 years ago

Can someone help , if they are proportional what is the equation

Mathematics

1 answer:

mr_godi [17]2 years ago

8 0

Answer:

Step-by-step explanation:

y = x

The constant of proportionality is 1 although you cannot see it. It is understood to be there.

y = (-8/5) x

This is a nasty piece of work and it depends on your grade level. If you are below grade 8, you are not encouraged to think of a constant of proportionality as less than 0.

In general the opinion is split. Some people say yes others no. If you twist my arm and put a gun to my head, my answer would be that it's fine, but it is a matter of what you have been told. I would read your notes.

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Ln a+3 + ln a-3 = ln 16

Lilit [14]

$\bf log_{{ a}}(xy)\implies log_{{ a}}(x)+log_{{ a}}(y)\\\\
and\qquad \textit{difference of squares}
\\ \quad \\
(a-b)(a+b) = a^2-b^2\qquad \qquad 
a^2-b^2 = (a-b)(a+b)\\\\
-----------------------------\\\\
ln(a+3)+ln(a-3)=ln(16)\implies ln[(a+3)(a-3)]=ln(16)
\\\\\\
ln[a^2-3^2]=ln(16)\impliedby \textit{removing ln() from both sides}
\\\\\\
a^2-9=16\implies a^2=16+9\implies a^2=25
\\\\\\
a=\pm\sqrt{25}\implies a=\pm 5$

7 0

2 years ago

Write 77^1/10 in the form <br> n√77 where n is a whole number.

Sedaia [141]

Answer:

$\sqrt[10]{77}$

Step-by-step explanation:

$77^\frac{1}{10}$ is the same as $\sqrt[10]{77^1} ,$ or simply $\sqrt[10]{77}$

4 0

2 years ago

Justin has $7.50 more than Eva, and Emma has $12 less than Justin. Together, they have a total of $63.00. How much money does ea

uysha [10]

Answer:

Step-by-step explanation: emma's amount be X . justin has $7.50+x because he has $7.50 more than emma.Since emma has 7.50+x-$12.to get everyones amount add what they have together which is=$7.50+x+$7.50+x-12 which in total is $63.00.after the calculations you get x=30.now distribute the x equally. so justin has $7.50+30=37.50.we also distribute it with emma's which is 7.50+30-12=25.5.

justin=$37.50

Emma=$25.50

to be sure add 37.50+25.50=$63

5 0

3 years ago

HEEEEEEEEEEELPPPPPPPPP PLEASEEEEEEE URGENT 15 POINTS+ MORE

slava [35]

Answer:

y - 70, x - 73 should be the answer

Step-by-step explanation:

4 0

2 years ago

Convert to rectangular coordinates. use exact values. 7 sqrt 2, 135 degrees

Free_Kalibri [48]

Tan 135 = -1

so rectangular coordinates are (-7 sqrt2, 7 sqrt2)

7 0

3 years ago