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Firlakuza [10]
3 years ago
12

Express in simplest form

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
7 0

Answer:

-2

Step-by-step explanation:

The 5x/5x cancels out so you left with 2/-1 which is equal to -2

Leni [432]3 years ago
4 0

Answer:

<h3>125</h3>

Step-by-step explanation:

Division of exponents,

means you subtract the number of the exponents:

\frac{5^{x+2}}{5^{x-1}}=5^{x+2-x-\left(-1\right)} =\\\\5^{x+2-x+1} =\\\\5^3 =\\\\

<h3>125</h3>

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complete the ordered pain so that each is a solution of the given linear equation then graph the equation y=x+6​
Romashka-Z-Leto [24]

Answer:

xjjx

Step-by-step explanation:

xkz

KKhananna

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4 0
3 years ago
the intensity, I, of light varies inversely as the square of the distance, D2 , from the light source. If I is 150 units when D
podryga [215]

\bf \textit{\underline{x} varies inversely with }\underline{z^5} ~\hspace{5.5em} \stackrel{\textit{constant of variation}}{x=\cfrac{\stackrel{\downarrow }{k}}{z^5}~\hfill } \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{\textit{\underline{I} varies inversely with }\underline{D^2}}{I = \cfrac{k}{D^2}} \qquad \qquad \textit{we also know that } \begin{cases} I=150\\ D=6 \end{cases}

\bf 150=\cfrac{k}{6^2}\implies 150=\cfrac{k}{36}\implies 5400=k~\hfill \boxed{I=\cfrac{5400}{D^2}} \\\\\\ \textit{when I = 24, what is \underline{D}?}\qquad \qquad 24=\cfrac{5400}{D^2}\implies D^2=\cfrac{5400}{24} \\\\\\ D^2=225\implies D=\sqrt{225}\implies D=15

5 0
4 years ago
Factor the expression using distributive property: 72b + 45
ANTONII [103]
The answer would be 9(8b+5)
this is how you do it...
1. find the GCF of both numbers in this one the GCF would be 9 
now, what do you multiply 9 by to get 72... 8, so 8 would go into the parenthesis and because there is a variable there which is 'b' the 8 would become '8b' now what do you multiply 9 with to get 45? '5' so you would add 5 into the parenthesis and that would be your answer!

Hope this helped! :D
8 0
3 years ago
Simplify the expression 4.2(5.1x+6.8)
Dominik [7]

Step-by-step explanation:

Step-by-step explanation:

Expand: 4.2×5.1×x+4.2×6.8

4.2×5.1×x  to (21.42)x

Simplify: 21.42x+4.2×6.8

4.2×6.8 = 28.5628.56

21.42x+28.56

8 0
3 years ago
What is the result when 78 is increased by 9.5%?
Hitman42 [59]
The best thing to do is to divide 78 by 100, and then multiply this by 9.5 78/100= 0.78. 0.78x9.5=7.41 You've then got to add 7.41 to 78, and this gives you 85.41 Hope this helps :)
4 0
4 years ago
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