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neonofarm [45]
3 years ago
9

Can someone please help me with this ⬆️⬆️⬆️it's the picture above ... 13/78=×/12

Mathematics
2 answers:
REY [17]3 years ago
6 0
Okay so what you're going to do is cross multiple to get 78x=156. After you get that answer you're going to divide both sides by 78 to get 2.
ratelena [41]3 years ago
3 0
I am pretty sure x=2
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Round 9,526,789 to the nearest hundred thousand​
tino4ka555 [31]

Answer:

9,500,000. the ten thousands place has a two, which is one less than 3, rendering the 6 in the thousand's place ineffective

Step-by-step explanation:

4 or less let it rest, 5 or more let it score

3 0
3 years ago
I forgot how to do this problem can I get some help
Step2247 [10]
You would convert 17 1/4 to 17 4/16, and change 7/8 to 14/16. Then you would add those 2 numbers together to get 17 18/16 or simplified, 18 1/8.
8 0
3 years ago
Ex 7) Imagine a mile-long bar of metal such as the rail along railroad tracks. Suppose that the rail is anchored on both ends an
Fantom [35]

9514 1404 393

Answer:

  about 44.5 feet

Step-by-step explanation:

We can write relations for the height of the rail as a function of initial length and expanded length, but the solution cannot be found algebraically. A graphical solution or iterative solution is possible.

Referring to the figure in the second attachment, we can write a relation between the angle value α and the height of the circular arc as ...

  h = c·tan(α) . . . . . . where c = half the initial rail length

Then the length of the expanded rail is ...

  s = r(2α) = (c/sin(2α)(2α) . . . . . . where s = half the expanded rail length

Rearranging this last equation, we have ...

  sin(2α)/(2α) = c/s

It is this equation that must be solved iteratively. We find the solution to be ...

  α ≈ 0.0168538794049 radians

So, the height of the circular arc is ...

  h = 2640.5·tan(0.0168538794049) ≈ 44.4984550191 . . . feet

The rail will bow upward by about 44.5 feet.

_____

<em>Additional comments</em>

Note that s and c in the diagram are half the lengths of the arc and the chord, respectively. The ratio of half-lengths is the same as the ratio of full lengths: c/s = 2640/2640.5 = 5280/5281.

We don't know the precise shape the arc will take, but we suspect is is not a circular arc. It seems likely to be a catenary, or something similar.

__

We used Newton's method iteration to refine the estimate of the angle from that shown on the graph. The iterator used is x' = x -f(x)/f'(x), where x' is the next guess based on the previous guess of x. Only a few iterations are required obtain an angle value to full calculator precision.

3 0
3 years ago
Please help me please
gizmo_the_mogwai [7]

Answer:

SA=390

Step-by-step explanation:

9*14=126

126+126=252

14*3=42

42+42=84

9*3=27

27+27=54

252+84+54=390

3 0
2 years ago
Is 4/5 a solution of x&lt;2?
krok68 [10]
Yea it is.4\5 is greater than 2
5 0
3 years ago
Read 2 more answers
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