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Airida [17]
3 years ago
8

One number is eight more than twice another. If their sum is decreased by nine, the result is fourteen. Find the numbers

Mathematics
1 answer:
Oliga [24]3 years ago
6 0
x-\ first \ number\\
y-\ second\ number\\\\
x-8=2y\\
x+y-9=14\\\\
x=2y+8\\
x+y=23\\\\
2y+8+y=23\\
3y+8=23\ \ \ |subtract\ 8\\
3y=15\ \ \ |divide\ by\ 3\\
y=5\\\\x=18Answer here
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Estimate using a rate per 100 of 74% of 315. 89% of 195
LiRa [457]
<span><span>1.       </span>Given numbers:
74 % of 315
89% of 195

now, let’s solve the first given numbers:
=> 74% of 315
=> 315 is the 100%
Let’s convert 74% into decimals
=> 74% = .74
=> 315 * .74 = 233.1, the value of 74% of 315
Let’s solve the second given:
=> 89% of 195
where 195 is the 100%
=> 89% = .89
=> 195 * .89
=> 173.55, the value of 89% of 195</span>



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4 years ago
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Dovator [93]
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3 0
3 years ago
What is 25 times 0.3?
Gekata [30.6K]

Answer:

8.3

Step-by-step explanation:

25÷3=8.3333333

I rounded it to this.

8 0
3 years ago
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Dahasolnce [82]

From the question we can deduce the formula to be 16 + 3n = 76

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3 0
3 years ago
Please prove it for me​
grigory [225]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identity

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Consider the left side

\frac{cotA-1}{cotA+1} ← divide terms on numerator/denominator by cotA

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= \frac{1-tanA}{1+tanA}

= right side , thus proven

7 0
2 years ago
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