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AlladinOne [14]
3 years ago
13

Use the quadratic formula to solve x^2-5x-2=0 HELP PLEASE!

Mathematics
2 answers:
Makovka662 [10]3 years ago
7 0

Answer:

I rounded to the nearest hundredth if that's okay.

Step-by-step explanation:

5.37,-0.37

kkurt [141]3 years ago
4 0

Answer:

x=\frac{-5+\sqrt{33} }{2} and x=\frac{-5-\sqrt{33} }{2}

Step-by-step explanation:

x = [-b±√(b²-4ac)]/2a

x = [-(-5)±√((-5)²-4(1)(-2))]/2(1)

x = [5±√(25+8)]/2

x= [-5±√(33)]/2

Therefore:

x=\frac{-5+\sqrt{33} }{2} and x=\frac{-5-\sqrt{33} }{2}

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15 Points
lakkis [162]

Answer:

y = 22⅘

Step-by-step explanation:

5x = 4

x = 0.8

y + 62(0.8) - 3y = 4

2y = 49.6 - 4

2y = 45.6

y = 22.8

4 0
3 years ago
Please HELP ME!!! (16 POINTS) due today :)))
aleksandr82 [10.1K]

Answer:

Step-by-step explanation:

I'm not sure what the question is asking, but if you mean the angles in the blue lines

First one, we know that the full length is 90, and it has gacen us 80, so the angle would be 10

Second one, we see that the angle is still 90, and since the given degree is 30, the unkown angle would be 60

Third one, the given angle is 75 so 90-75=15.

The answers would be 10, 60, and 15.

8 0
3 years ago
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The radius of ⨀B is 4 centimeters and the circumference of ⨀A is 20π centimeters. Find CD
malfutka [58]

Answer:

24

Step-by-step explanation:

If we're using CD as simply numbers and not references to their designated circles we can use the difference between A and B as a pattern

The circumference is 2 multiplied by pi by the radius. This would mean that A has a radius of 10.

The difference between A and B is 2 so we can assume that C is 6 and D is 4. 4×6=24.

8 0
3 years ago
The equation -3 + 7 = -10 simplifies to a true statement.<br><br><br> TrueFalse
german

Answer:

False.

Step-by-step explanation:

-3 + 7 = 7 - 3 = 4.

6 0
4 years ago
If two numbers exist in a ratio of 3 : 8, and the smaller of the numbers is 9, what is the larger number?
zhuklara [117]

Answer:

24

Step-by-step explanation:

the smaller number in the ratio is 3, three times three is 9. so eight time three is 24 .

5 0
3 years ago
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