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Alex17521 [72]
2 years ago
15

Solving quadratic equations solve: x^2=81

Mathematics
2 answers:
xenn [34]2 years ago
8 0

Answer:9

Step-by-step explanation:

Square root of 81 is9.

fiasKO [112]2 years ago
6 0
Answer: 9
I hope this helps u!
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Multiply (5x^2 + x-4(x+2)
bagirrra123 [75]

Answer:

5x^2-3x-8

Step-by-step explanation:

So you will want this to be simplified.

expanding brackets is a great way of doing this

one you have expanded all brackets u get the answer above

:)

4 0
3 years ago
How do i solve this​
Sophie [7]

Step-by-step explanation:

You're given that ΔUVW is similar to ΔYZW.  The tricky part is identifying which sides in ΔUVW correspond to which sides in ΔYZW.

The triangles share point W, so visually rotate one triangle around W until the two triangles align.  That way, you can see that UW and ZW correspond to each other, and VW and YW correspond to each other.

Now you can find the scale:

VW / YW = 5/12

And you can write a proportion to find x:

UW / ZW = VW / YW

x / 64 = 5 / 12

x = 26 ⅔

5 0
3 years ago
Which of the following is a factor of 2xy+8x-8x-32
IrinaVladis [17]
If you simplify 2xy+8x-8x-32 you get 2xy-32
5 0
3 years ago
DOG A dog is leashed to the corner of a house. How much running area does the dog have? Explain how you found your answer.
Eduardwww [97]

Answer:

The area will be \frac{3\pi r^{2} }{4}  where r is the length of the leash.

Step-by-step explanation:

The area of a circle is pi times the radius squared. One forth of that area is not available for the dog to run: its the corner of the house. so what's left is 3/4 of the area of the circle. (3/4)πr²

Since the length of the leash is not given in the question, no specific Area can be answered. Once that value is substituted for r, the actual area can be calculated.

7 0
2 years ago
A device extracts no more than 37 liters of water per day from the air. How long does it take to collect at least 185 liters of
hjlf

Answer:

5

Step-by-step explanation:

A device extracts 37 liters of water per day

Therefore the number of days it will take to extract 185 liters can be calculated as follows

= 185/37

= 5

Hence it would take 5 days

5 0
2 years ago
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