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lana66690 [7]
3 years ago
9

Simplify 2 over squareroot 5

Mathematics
1 answer:
deff fn [24]3 years ago
3 0
Square Root cannot be in the Denominator, therefore:

2 / <span>√5
2 </span>× √5 / √5 × <span>√5
2</span><span>√5 / 5

Hope this helps! </span>
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I need help i dont know what to do
vladimir1956 [14]

9514 1404 393

Answer:

  ∠CAB = 28°

  ∠DAC = 64°

Step-by-step explanation:

What you do in each case is make use of the relationships you know about angles in a triangle and around parallel lines. You can also use the relationships you know about diagonals in a rectangle, and the triangles they create.

<u>Left</u>

Take advantage of the fact that ∆AEB is isosceles, so the angles at A and B in that triangle are the same. If we call that angle measure x, then we have the sum of angles in that triangle is ...

  x + x + ∠AEB = 180°

  2x = 180° -124° = 56°

  x = 28°

The measure of angle CAB is 28°.

__

<u>Right</u>

Sides AD and BC are parallel, so diagonal AC can be considered a transversal. The two angles we're concerned with are alternate interior angles, so are congruent.

  ∠BCA = ∠DAC = 64°

The measure of angle DAC is 64°.

(Another way to look at this is that triangles BCE and DAE are congruent isosceles triangles, so corresponding angles are congruent.)

8 0
3 years ago
What is the surface area of the square pyramid represented by the net? 9 m Enter your answer in the box 6 m 9m 6 m 9 m m 9 m​
Darya [45]

Answer:

144

Step-by-step explanation:

On this shape we are going to splt up the 4 triangles for the square to make it simple.

So, firstly, plug is the h an w of one of the triangles into the formula for the area of a triangle which is hxw/2

H=9

W=6

9x6/2=27

Then multiply the area of the triangle, 27, to get the total area of all 4 triangles (since they all have the same measurements)

27x4=108

108 is the area of all 4 triangles

Next, just put the l and w into the equation for the area of a square which is lxw

L=6

W=6

6x6=36

36 is the area of the square

Lastly, just add the areas of the triangles and the square together

108+36=144

144 is the total area/surface area, of the pyramid

5 0
2 years ago
Solve using the quadratic formula 5x^2-4x=2
Alexus [3.1K]

Answer: x= ±(√30) / 5

Step by step:




8 0
3 years ago
How do you invert and multiply to divide 2/3÷4
Ira Lisetskai [31]
2/3  ÷  4

2/3 ÷ 4/1

We invert the 4/1 to 1/4 and multiply out.

2/3  ×  1/4

= 1/3 × 1/2                              2 into 4 is 2.

= 1/(3 × 2)

= 1/6

Hope this helps.
4 0
3 years ago
Seven subtracted from c is less then -18: translate into an inequality
777dan777 [17]

Answer:

c - 7 < -18

Step-by-step explanation:

Seven subtracted from c :   c - 7

c - 7 < -18

3 0
3 years ago
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