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Lina20 [59]
2 years ago
12

Rena wrote all the integers from 1 to 19. How many digits did she write?

Mathematics
2 answers:
harkovskaia [24]2 years ago
8 0
She wrote 19 digits
ratelena [41]2 years ago
4 0

Answer:

26

Step-by-step explanation:

Lets write it out

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

I counted 26 digits

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Identify the 5th term in the sequence assuming that the sequence is either arithmetic or geometric:
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Answer:99.7

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3 years ago
Lines that are tangent to a circle are
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3 years ago
P and Q are two points on the line x - y + 1 = 0 and are at distance 5 from the origin. Find the area of the triangle OPQ. ​
Alecsey [184]

Answer:

P and Q are two points on the line x-y+1=0 and are at a distant of 5 units from the origin. Find the area of triangle POQ.

Step-by-step explanation:

P and Q are the intersection points of

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sub y = x+1 into the circle

x^2 + (x+1)^2 = 25

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so P(3,4) and Q(-4,3) are our two points

Height of triangle.

h = |0 - 0 + 1|/√2 = 1/√2

PQ = √( (-7)^2 + 1^2) = √50 = 5√2

area POQ = (1/2)(1/√2)(5√2) = 5/2 square units

hope this helped

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2 years ago
Helppppppppppppppppppppppppppp me plz
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Yes they are equivalent expressions. If you take the z to the power of two, and subtract that from the other z to the power of two, it is zero. So you are left with four which is the answer
6 0
3 years ago
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