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Vladimir79 [104]
2 years ago
10

In 1/a-b - 1/b-a

Mathematics
1 answer:
Vadim26 [7]2 years ago
4 0
Idk but better then I have the same thing to call me and my friend told him I don’t want him to
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What is -2y + 10 + 2y - 8 simplified
Andru [333]

Answer:

2

Step-by-step explanation:

-2y + 2y = 0

10 - 8 = 2

8 0
3 years ago
Read 2 more answers
A spiral staircase turns $270^\circ$ as it rises 10 feet. The radius of the staircase is 3 feet. What is the number of feet in t
Anastaziya [24]

The number of feet in the length of the handrail is 17.3 ft.

The easiest way to see this is to imagine that we can "unfold" the spiral to create a rectangle

The bottom side of the rectangle is just the arc length of a circle with a radius of 3 ft  turned through 270°= (3/4) of a whole revolution

(3/4) (2pi) (3)  =  (9/2)pi ft =   4.5 pi ft

The side of the rectangle will be the rise of the staircase = 10ft

And the diagonal of the rectangle will be the length of the handrail

We can use the Pythagorean Theorem to solve this

Handrail length = √ [ (4.5 pi)^2 + 10^2 ]  ≈  17.3 ft

Pythagorean theorem is the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse.

Learn more about the Pythagorean theorem here: brainly.com/question/343682

#SPJ4

3 0
1 year ago
I’ll mark brainliest !! Please help me with these answers
Galina-37 [17]

Answer:

Problem1= a Problem 2=a

Step-by-step explanation:

Hope this helps

4 0
3 years ago
Is the<br> statement (-1)n = -1 true for any positive integer n? Explain.
Rashid [163]

Answer:

it has to equal -1 x= to -1 parenthesees

1 times -1= -1 its true for that 1 answer but not the others

7 0
3 years ago
Only using 1 2 3 4, find a solution that equals 18, 19, 20, and 21
adoni [48]

Answer:

See below, there may be more than one answer

Step-by-step explanation:

4(3+1)+2 = 18

(4+2)(3)+1 = 19

(1)(2+3)(4) = 20

(1+2)(3+4) = 21

6 0
2 years ago
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