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nata0808 [166]
3 years ago
5

4x-5=19 please help thank you

Mathematics
2 answers:
SpyIntel [72]3 years ago
8 0
The answer for 4x-5=19 is 6
frosja888 [35]3 years ago
4 0

Answer:

x=6

Step-by-step explanation:

4x - 5 = 19

4x = 19 + 5

4x = 24

x =  \frac{24}{4}

x = 6

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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
4 years ago
Productive use of machinery on a farm made it possible to decrease the number of tractors by 12 how many tractors does the farm
irina1246 [14]
So first off, the answer to this is 24 now think of x as the  real or original sum or amount, also y as the new sum or amount.
y * 1.5 is x, and y+12 is x. Now flip that to figure out what is y, also which is what we need, and you have x/1.5 = y as well as x-12 = y. Use the equal values method and make an equation x/1.5=x-12. solve this equation to get x, which is 36. to figure out the new amount, y, you need to minus 12, which can help you get the answer which is 24.
5 0
3 years ago
Please hurry only have 5 minutes Will make you Brainliest.
lianna [129]

Answer:

none of them are true

Step-by-step explanation:

3 0
3 years ago
Solve a-c=d-r for a<br><br> please help me :)
Vesnalui [34]

Answer:

a = d - r + c

Step-by-step explanation:

Simply switch the terms around a bit and you have the answer.

Hope this helped!

3 0
3 years ago
Read 2 more answers
PLS ANSWER THE FOLOWWING QUESTION
sashaice [31]

Answer:

Lines p and q are parrallel.

Step-by-step explanation:

Lines are 180 degrees. We can use that to find out the other angles.

180 - 140 = 40

180 - 40 = 140

6 0
3 years ago
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