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-BARSIC- [3]
3 years ago
10

PLS HELP ME PLSSSS WHATS THE ANSWER

Mathematics
1 answer:
Paraphin [41]3 years ago
4 0

Answer:

Step-by-step explanation:

I think its D cuz there should be one bar with negative value

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Suppose a railroad rail is 3 kilometers and it expands on a hot day by 15 centimeters in length. Approximately how many meters w
earnstyle [38]

Answer:

Answer:  13.4 m

Step-by-step explanation:

For small angles, x, in radians,

tan(x) ≈ sin(x) = x

Use this to create an approximate diagram for the problem as shown in the figure below.

The actual deflected shape is parabolic, but it is approximated by an isosceles triangle with small equal angles.

The extend length is 3 km + 12 cm, which is 

3000 + 0.12 = 3000.12 m

Half of the extended length is 1500.06 m

Let h+  the rise of the center of the rail above ground.

From the Pythagorean theorem, obtain

h² + 1500² = 1500.6²

h² = 1500.06² - 1500² = 180.004

h = 13.4 m, which is about 0.9% of the original length.

Read more on Brainly.com - brainly.com/question/5596356#readmore

6 0
3 years ago
If f(x) is a linear function, f( - 1) = 5, and f(2) = 3, find an equation for 8 (2)<br> =<br> f(x) =
Leno4ka [110]
5
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3 0
2 years ago
Which of the following techniques can be used to separate a homogeneous mixture into its component parts?
Airida [17]

The answer is A. This is because heat, pressure, or differences in density are some methods used to separate homogeneous mixtures.

4 0
3 years ago
Read 2 more answers
Hey! please help posted picture of question
timama [110]
Since the graph is a straight line, it is a linear function. For a non - linear function the graph is a curved one.

Every function is also a relation as it can be expressed as a set of ordered pairs. But the opposite of this is not true. Not every relation is a function. To test if a relation is a function we use the vertical line test. A vertical line crosses a function only once at a given value of x.

Therefore, the answer to the given question is option D. Linear Function and a Relation
6 0
3 years ago
PLEASE IF UR GOOD AT GEOMETRY HELP MEEE!!
lana66690 [7]

Answer:

angle CDE

Step-by-step explanation:

there are two triangles in that whole diagram the first is: CAB then if you look care there is angle CDE so try next time to closely see the similiar triangle.

3 0
3 years ago
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