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3 years ago

Write an expression that represent the sum of a number and 12

Mathematics

2 answers:

antiseptic1488 [7]3 years ago

6 0

Answer:

5+12

there is no equals sign in an expression so it is just that

Leokris [45]3 years ago

3 0

Answer

n+12

Step-by-step explanation:

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Solve: 12^x2+5x-4 =12^2x+6

lyudmila [28]

Answer:

x=2, x=-5

Step-by-step explanation:

to work more comfortably, the first thing we need to do is work the equation linearly, for that we take advantage of the property of logarithms that tells me that $log(a^{b})=b*log(a)$

in this way, the equation remains as:

$log(12^{x^{2} +5x-4 } )=log(12^{5x+6} ) \\ (x^{2} +5x-4 )*log(12)=(5x+6) *log(12)\\x^{2} +5x-4 = 5x+6$

Now we clear the equation so that it is of the form $ax^{2} +bx+c=0$

$x^{2} +5x-2x=6+4\\ x^{2} +3x-10=0$

finally, we apply the equation to solve second degree equations

$x = \frac{-b \pm \sqrt {b^2-4ac}}{2a}$

$x = \frac{-3 \pm \sqrt {3^2-4*1*(-10)}}{2*1}\\ x = \frac{-3 \pm \sqrt {9+40}}{2}\\ x = \frac{-3 \pm 7}{2}$

x=2 and x=-5

Done

5 0

3 years ago

What is 10.18 repeating as a fraction? (only the 8 is repeating)

rusak2 [61]

X= 10.18
10x = 101.8
100x = 1018.8
100x-10x = 917
x = 917/90

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3 years ago

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Find the equation of the straight lines passing through the point (5,0) and making an angle 45o with the line 4x - 5y + 9 = 0

shepuryov [24]

<h3>Answer: Well the answer is 65232</h3>

Step-by-step explanation:

well it is kindof

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3 years ago

The perimeter of a rectangle is 30 inches. If its width is three times its length, find the dimensions of the rectangle.

makkiz [27]

The perimeter of a rectangle is 30 inches. If its length is three times its width, find the dimensions. 30 inches=2(L+W) Divide each side by 2. 15 inches=L+W Substitute for L.

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ryzh [129]

Answer:

✓ ✓ ✓

-6 X X✓ ✓ ✓

-6 X X

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