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vodka [1.7K]
3 years ago
10

Solve the following equation : 7x/15-1=22

Mathematics
2 answers:
miskamm [114]3 years ago
6 0
\frac{7x}{15-1} =22
-----------------
To solve this all it takes is two simple steps
Simplify \frac{7x}{15-1} =22
1/2x =22
------------------------
Multiply both sides by 2
2 · \frac{1}{2} = 2 · 22
x = 44
Semenov [28]3 years ago
5 0
Hey there Smarty!

\boxed{\boxed{Rearrange \ the \ equation \ by \ subtracting}}

\left[\begin{array}{ccc}\boxed{\boxed{ 7*x/15-1-(22)=0 }}\end{array}\right]

\boxed{((7* \frac{x}{15)}-1)-22=0}}

\left[\begin{array}{ccc} \frac{(7x - 15)  }{15} -22=0\end{array}\right]

Add \  345 \  to \ both \ sides \ of \ the \ equation : \\ \\
                      7x = 345 \\ \\ Divide \ both \ sides \ of \ the \ equation \  by \ 7:
                     x = 345/7 = \boxed{\boxed{49.28}}




Hope this helps you!
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Troyanec [42]
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What is the fifth term of the sequence whose first term is 10 and whose common ratio is 1/2?
Cloud [144]

Answer:

D


Step-by-step explanation:

Common ratio of half means that to get each successive terms, you have to multiply the preceding term by half.

Since first term is 10

2nd term is 10*\frac{1}{2}=5

3rd term is 5*\frac{1}{2}=\frac{5}{2}

4th term is \frac{5}{2}*\frac{1}{2}=\frac{5}{4}

5th term is \frac{5}{4}*\frac{1}{2}=\frac{5}{8}


Answer choice D is right.

8 0
3 years ago
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Answer:

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Step-by-step explanation:

4 0
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What is the answer to 2+2*8
rusak2 [61]
Follow PEMDAS

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3 years ago
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Using the Principle of Mathematical Induction, prove that . n ^2 − n is even for n ≥ 1​
Tamiku [17]

Base case: if <em>n</em> = 1, then

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Induction hypothesis: assume the statement is true for <em>n</em> = <em>k</em>, namely that <em>k</em> ² - <em>k</em> is even. This means that <em>k</em> ² - <em>k</em> = 2<em>m</em> for some integer <em>m</em>.

Induction step: show that the assumption implies (<em>k</em> + 1)² - (<em>k</em> + 1) is also even. We have

(<em>k</em> + 1)² - (<em>k</em> + 1) = <em>k</em> ² + 2<em>k</em> + 1 - <em>k</em> - 1

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8 0
3 years ago
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