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tankabanditka [31]
4 years ago
12

If the sum of four times a number and four less than three times a number is seventeen

Mathematics
1 answer:
NARA [144]4 years ago
8 0

Answer:

13divided by 7

Step-by-step explanation:

4x + 3x - 4 = 17 \\ 7x - 4 = 17 \\ 7x = 17 - 4 \\ 7x = 13 \\  \frac{7x}{7}  =  \frac{13}{7 }  \\ x =  \frac{13}{7} or1 \times \frac{6}{7}

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Step-by-step explanation:

4 0
2 years ago
Not understanding how to solve
valentinak56 [21]

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Step-by-step explanation:Above


5 0
3 years ago
Given: X = r + 2, Y = 2r - 9, and Z = r 2 + 17r + 30. Simplify [X · Y - Z] ÷ X.
ale4655 [162]
( (r+2) * (2r-9)-(r^2+17r+30) )/(r+2)

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7 0
4 years ago
Solve the equation 2cosA = 3tanA
zavuch27 [327]
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2cos(A)=3tan(A)\implies 2cos(A)=3\cfrac{sin(A)}{cos(A)}
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2cos^2(A)=3sin(A)\implies 2[1-sin^2(A)]=3sin(A)
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\bf \\\\\\
0=[2sin(A)-1][sin(A)+2]\implies 
\begin{cases}
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\frac{1}{2}=sin(A)\\\\
sin^{-1}\left( \frac{1}{2} \right)=\measuredangle A\\\\
\frac{\pi }{6},\frac{5\pi }{6}\\
----------\\
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\end{cases}

now, as far as the second case....well, sine of anything is within the range of -1 or 1, so -1 < sin(A) < 1

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8 0
3 years ago
What the percentage of 25 out of 100?
Aleks04 [339]

Answer:

25%

Step-by-step explanation:

Convert fraction (ratio) 25 / 100 Answer: 25%

8 0
3 years ago
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