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jolli1 [7]
2 years ago
7

Solve for u. 20 − (u · 0.9) = 4.7

Mathematics
1 answer:
alina1380 [7]2 years ago
3 0

Answer:

20 - 0.9u = 4.7

-0.9u = 4.7 - 20

-0.9u = -15.3

Divide both sides by - 0.9

u = 17

Hope this helps.

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The movie started at 11:45 and ended at 1:20 how long was the movie
igor_vitrenko [27]
11:45 ---> 01:20

11:45 + (00:15 + 01:00 + 00:20)

= 01:20

So your answer is:

01:35 which is 1 hr, 35 mins.
5 0
3 years ago
Horizontal plane A and vertical plane B intersect at a line. Line n is vertical on plane B and forms a right angle with horizont
Greeley [361]

Answer:

L and M - None of these

L and N - Skew

M and N - Perpendicular

Step-by-step explanation:

5 0
2 years ago
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Are there any prime numbers that are also square numbers
cestrela7 [59]
The definition of a prime number is one in which there are no factors other than 1 and itself. For example, 5 has no other factors other than 1 and 5 (itself).

The number 1 is not considered prime nor composite.So, even though it is a square (1²), it is not a prime number.

All square numbers have a square root that is neither 1 nor itself: 16 is the square of 4, 49 the square of 7, and so on.

Due to the fact that square numbers have factors other than 1 and itself, square numbers are not prime.

Hope this helps! :)
8 0
3 years ago
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What is the degree of the following polynomial?<br> -4x + 5x2 – 2x5 + 12
djyliett [7]

Answer:

5

Step-by-step explanation:

The highest power of x will be the degree of the polynomial.

4 0
3 years ago
5x + 2y = 7
k0ka [10]
5x + 2y = 7 . . . (1)
y = x + 1 . . . (2)
Putting (2) into (1) gives
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From (2) y = 5/7 + 1 = 12/7

Therefore, solution is {(5/7, 12/7)}
3 0
2 years ago
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