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slavikrds [6]
3 years ago
14

A train must climb a constant gradient of 5.5m for every 200m on track. Find the angle of incline

Mathematics
2 answers:
Eduardwww [97]3 years ago
4 0
<span>angle = arcsin(5.5/200) = 1.575 degrees</span>
elena55 [62]3 years ago
3 0
1.575 degrees is the answer
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How long would the straw be?
algol13

Answer:

Length of straw = 11 inch (Approx.)

Step-by-step explanation:

Given:

Length of cuboid = 9 inch

Width of cuboid = 5 inch

Height of cuboid = 4 inch

Find;

Length of straw

Computation:

Length of straw = Diagonal of cuboid

Diagonal of cuboid = √l² + b² + h²

Diagonal of cuboid = √9² + 5² + 4²

Diagonal of cuboid = √81 + 25 + 16

Diagonal of cuboid = √122

Diagonal of cuboid = 11.04

Length of straw = 11 inch (Approx.)

7 0
3 years ago
Write the first three terms in the binomial expansion, expressing the result in simplifies form.
Pani-rosa [81]
You need to foil it out. That's how you get the answer.

(x+4)^20
=
(x+4) x (x+4)^19
= 
(x+4)^2 x (x+4)^18
etc. 


8 0
3 years ago
En un triángulo isósceles, el lado desigual mide 8 cm menos que cada uno de los lados iguales. Calcula los lados del triángulo s
kupik [55]

The given problem is "In an isosceles triangle, the uneven side is 8 cm shorter than each of the equal sides. Calculate the sides of the triangle knowing that the perimeter is 31 cm.

To find,

The sides of the triangle.

Solution,

Let each of equal sides are x.

The unequal sides is x-8.

Perimeter is the sum of all the sides. So,

31 = x+x+x-8

31+8=3x

3x = 39

x = 13

So, the equal sides are 13 cm.

Unequal side = x-8

= 13-8

= 5 cm

Hence, two of the equal sides are 13 cm and unequal side is 5 cm.

7 0
3 years ago
Pls help , need this done by tomorrow.
quester [9]

Answer:

Q matches to a and P matches to b

Step-by-step explanation:

This is a volume question so we can use the volume of a cylinder to see which one corresponds to what.  Volume of a cylinder is \pir^{2}h.  We know that the heights of the cylinders are the same since the diagram says so.  We also know pi is the same since thats a constant.  The only thing thats different is the radius (as you can see radius of P is bigger than Q).  If the radius of P is bigger than Q and all the other things are the same (height is the same and pi is the same), then that automatically means that P has more volume than Q.  More volume means more time to fill up.  Since Q has less volume, it will take less time to fill up.  So now we look at the graph.  A shows that the height of water increases at a faster rate than that of B.  This is because there is less volume in that container (less volume=less time to fill up).  Therefore a matches to Q and therefore b matches to P

3 0
3 years ago
A large cube has 5 layers, each with 5 rows of 5 small cubes. How many small cubes will the larger cube have.
Crank

Answer:

The large cube will contain 125 total small cubes.

Step-by-step explanation:

In order to find this, we multiply the number of rows by the number of cubes in a row.

5 * 5 = 25

Now we take that number and we multiply it by the number of layers total.

25 * 5 = 125

3 0
3 years ago
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