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3 years ago

What is the missing reason in the proof?

Mathematics

1 answer:

Montano1993 [528]3 years ago

3 0

Answer:

Option C is correct.

Step-by-step explanation:

The last step is y+0 =y

This represents additive identity property.

This property states if zero is added to any number we get the same number.i.e if 0 is added to y then we get y (y+0=y)

So, Option C is correct

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Work out the length of X.

vlabodo [156]

Answer:

By Pythagoras theorem

H^2=P^2+B^2

25^2=x^2+24^2

625=x^2 + 576

625-576=x^2

49=x^2

x^2=49

x=√49

x=7cm

Hope this helps uhh

6 0

2 years ago

1)-5.5 - 11.2 = on a.) 5.7 b.)-5.7 c.) 16.7 d.) -16.7

Bingel [31]

Answer:

Step-by-step explanation:

-5.5-11.2

change the subtraction to addition

5.5+11.2= 16.7

6 0

3 years ago

Read 2 more answers

Simplify 5x - 7x - 8x +4

KonstantinChe [14]

-10x+4.
5x-7x is -2.
-2x-8x is -10x.
you cannot simplify the 4

alternatively, you could write -10x+4 as
-2(5x-2)

7 0

3 years ago

Does anyone else play woozworld? if so, add me SummerRae0

expeople1 [14]

Ok I will add u to if you can help me with my test

6 0

3 years ago

The base of a solid oblique pyramid is an equilateral triangle with a base edge length of 18 inches. A solid oblique pyramid has

igor_vitrenko [27]

Answer:

b. $9\sqrt{3}in$

Step-by-step explanation:

We are given that

Length of equilateral triangle=a=18 in

Base of oblique pyramid is an equilateral triangle.

We have to find the height of the triangular base of the pyramid

Height of the triangular base of the pyramid,h= $acos\theta$

We know that each angle of equilateral triangle =60 degree

$\theta=\frac{60}{2}=30^{\circ}$

Substitute the values

Height of triangular base of the pyramid,h= $18cos30=18\times \frac{\sqrt 3}{2}$ in

Using the value of

$cos30^{\circ}=\frac{\sqrt 3}{2}$

Height of triangular base of the pyramid,h= $9\sqrt{3}in$

Option b is true.

6 0

3 years ago

Read 2 more answers