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Semmy [17]
3 years ago
6

Find the value of x. HURRY PLEASE

Mathematics
2 answers:
svet-max [94.6K]3 years ago
6 0

Answer:

we have

x²+4=13[From the same external point, the tangent segments to a circle are equal.]

x²=13-4

x²=9

x²=3²

x=3

Mashutka [201]3 years ago
4 0

Answer:

x=3

Step-by-step explanation:

so...

13=x²+4.

start by subtracting 4 from each side to get the numbers on one side.

13-4=, and 4-4=0

now, we just have 9=x².

to undo a square, one must square root. so,

\sqrt{9}  = 3

and

\sqrt{x {}^{2} }  = x

now, x=3.

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3 years ago
A man spends 2/5 of his salary on food, 3/10 on his rent and 1/8 on other expenses. What fraction of his salary is still left wi
tino4ka555 [31]

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\frac{7}{40}

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IRISSAK [1]
\bf \qquad \qquad \textit{sum of a finite geometric sequence}
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S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
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3 years ago
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Four times the greater of two consecutive integers is 18 more than three times the lesser integer. What are the integers?
maw [93]
This is how I would solve it:

1st # = x                 4(x+1)=3x+18
2nd # = x+1              4x+4=3x+18
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To check: 15x4=60; 60-42=18.       <u>1st # = 14; 2nd # = 15.</u>
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