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Jlenok [28]
4 years ago
5

How many significant figures are in the number 0.002849?

Mathematics
1 answer:
Oliga [24]4 years ago
5 0
There is 4 significant figures
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Enter the equation of the line in the form y=mx where m is the slope.Immersive Reader
kari74 [83]

Answer:

y = 1/2x

Step-by-step explanation:

The slope is the rise (up) over run (left or right depending on if the number is negative) between points. So the next point on the graph is up 5 and over 10. this simplified is 1/2. Then you put this into y=mx which is y=1/2x

4 0
3 years ago
What is the smallest integer $n$, greater than $1$, such that $n^{-1}\pmod{130}$ and $n^{-1}\pmod{231}$ are both defined?
olasank [31]

First of all, the modular inverse of n modulo k can only exist if GCD(n, k) = 1.

We have

130 = 2 • 5 • 13

231 = 3 • 7 • 11

so n must be free of 2, 3, 5, 7, 11, and 13, which are the first six primes. It follows that n = 17 must the least integer that satisfies the conditions.

To verify the claim, we try to solve the system of congruences

\begin{cases} 17x \equiv 1 \pmod{130} \\ 17y \equiv 1 \pmod{231} \end{cases}

Use the Euclidean algorithm to express 1 as a linear combination of 130 and 17:

130 = 7 • 17 + 11

17 = 1 • 11 + 6

11 = 1 • 6 + 5

6 = 1 • 5 + 1

⇒   1 = 23 • 17 - 3 • 130

Then

23 • 17 - 3 • 130 ≡ 23 • 17 ≡ 1 (mod 130)

so that x = 23.

Repeat for 231 and 17:

231 = 13 • 17 + 10

17 = 1 • 10 + 7

10 = 1 • 7 + 3

7 = 2 • 3 + 1

⇒   1 = 68 • 17 - 5 • 231

Then

68 • 17 - 5 • 231 ≡ = 68 • 17 ≡ 1 (mod 231)

so that y = 68.

3 0
3 years ago
2^2 x 5^2 is the prime factorization of what number
SSSSS [86.1K]

Answer:

100 is the correct answer.

Step-by-step explanation:

=2×2×5×5

=4×25

=100

Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot. :)

8 0
3 years ago
Read 2 more answers
Barry's family drove 843 miles to see his grandparents. On the first day, they drove 483 mi. On the second day, how long did it
IrinaVladis [17]

Answer:

on the second day it took them 6 hours to get to their grandparents' house

Step-by-step explanation:

First we have to calculate how many miles they had to drive the second day

For this we have to subtract from the total miles the number of miles they drove the first day

843 mi - 483 mi = 360 mi

To calculate the time it takes we have to divide the distance it has to travel by the average velocity at which they travel

v = 60 mi/h

d = 360 mi

t = d/v

t = 360(mi) / 60(mi/h)

t = 6 h

on the second day it took them 6 hours to get to their grandparents' house

5 0
3 years ago
64 oz equals how many lbs
sweet [91]

Answer:

4 pounds

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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