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daser333 [38]
2 years ago
9

Solve for x: x^2+4x-5=16x

Mathematics
2 answers:
BigorU [14]2 years ago
6 0
Solve for x: x^2+4x-5=16x
first take 16x from both sides of the equation
x²-12x-5=0
now we have a quadratic. we can solve it by using the quadratic formula
x=-b plus or minus the square root of b²-4ac all divided by 2a
where a=1, b=-12 and c=-5
plug these numbers into the formula
x=12 plus or minus the square root of 144-4x1x-5 all divided by 2
<span>x=12 plus or minus the square root of 164 all divided by 2
or in decimal form </span>x = {12.403124237, -0.403124237}
lapo4ka [179]2 years ago
5 0
x^2+4x-5=16x\\&#10;x^2-12x-5=0\\&#10;x^2-12x+36-41=0\\&#10;(x-6)^2=41\\&#10;x-6=\sqrt{41} \vee x-6=-\sqrt{41}\\&#10;x=6+\sqrt{41} \vee x=6-\sqrt{41}
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What is the interval when written in the form of (lower limit, upper limit)(lower limit, upper limit) ?
Stels [109]
The interval <span>when written in the form of lower limit and the upper limit would be 95.8 - 98.2. This can be calculated by subtracting 95 with 1.2 and by adding 95 with 1.2. Hope this answers the question. Have a nice day. Feel free to ask more question.</span>
8 0
3 years ago
What is the total number of digits required in numbering a book that has 1724 pages?
Reptile [31]

Answer:

5,789

Step-by-step explanation:

I got 5,789 because there are 9 one digit numbers. 1-9 -> 9x1=9. There are 90 two digit numbers. (10-99)-> 90x2=180. There are 900 three digit numbers. (100-999)-> 900x3=2700. There are 725 four digit numbers. (1000-1724)-> 724x4= 2900. Then, I added 9+180+2700+2900=5789.

In conclusion, the total number of digits required in numbering a book that has 1724 pages is 5789.

8 0
3 years ago
An ice cream cone is 5" deep and 2" in top diameter. One scoop of vanilla ice cream, 2" in diameter, is placed on the cone. If t
Ratling [72]
If the total volume of the ice cream exceeds the internal volume of the cone, then it will overflow.

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Since Volume of cone > Volume of icecream, the cone will not overflow.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
5 0
3 years ago
We have 6 different robots and we want to arrange them in a line. How many different ways are there to arrange them?
vivado [14]
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3 years ago
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Gwar [14]

Answer:

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6 0
3 years ago
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