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Karolina [17]
3 years ago
13

A triangular pyramid has lateral faces with bases of 6 meters and height of 9 meters. The area of the base of the pyramid 15.6 m

eters . What is the surface area of the pyramid?
Mathematics
1 answer:
jasenka [17]3 years ago
7 0
To find surface area, you can find the area od all sides and add them together
First, area of an triangle is 1/2 length times width
So you do 1/2 6*9= 1/2 54=  27  The area of the three triangles are 27
27 times 3 is  81
81 plus the base of 15.6 is 96.6
The surface area is 96.6 meters squared

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Find the vertex, x intercept, and y intercept of the following equation: y=(x-3)^2+5
daser333 [38]

Answer:

The x-intercepts are:    ( 3 + i√5, 0) and  (3 - i√5, 0).

The y-intercept is (0,5).

The vertex is at (3, 5).


Step-by-step explanation:

The given equation y=(x-3)^2+5 has the general form y=(x-h)^2+k, whose vertex is at (h,k).

Thus, the vertex of y=(x-3)^2+5 is (3,5).

Find the x-intercepts by setting y=(x-3)^2+5 = 0 and solving for x.  To do this, solve (x-3)^2+5 = 0 for x.  Subtracting 5 from both sides, we get:

(x-3)^2 = -5.  We want to solve this for x.

Taking the square root of both sides, we get:

x-3 = √-1 * √5. Then x = 3 + i√5 and x = 3 - i√5.  The x-intercepts are:

( 3 + i√5, 0) and  (3 - i√5, 0).

3 0
3 years ago
Which quadrant would the point (-5,-3) end up in if it is rotated 180 degrees clockwise?
alex41 [277]
I believe it should be quadrant 1
3 0
4 years ago
YA is the angle bisector of ZXYZ. If mZXYZ = 52°, what is mZZYA?
antoniya [11.8K]

Given:

YA is the angle bisector of \angle XYZ.

m\angle XYZ=52^\circ

To find:

The measure of m\angle ZYA.

Solution:

It is given that YA is the angle bisector of \angle XYZ. It means

m\angle XYA=m\angle ZYA            ...(i)

Now,

m\angle XYA+m\angle ZYA=m\angle XYZ

m\angle ZYA+m\angle ZYA=52^\circ            [Using (i)]

2m\angle ZYA=52^\circ

Divide both sides by 2.

m\angle ZYA=\dfrac{52^\circ}{2}

m\angle ZYA=26^\circ

Therefore, the required value is m\angle ZYA=26^\circ.

5 0
3 years ago
3(x+7)=-15<br> I need a clear explanation of visual representation instead of the answer itself
Arlecino [84]

Answer:

x = -7

Step-by-step explanation:

3(x+7)  = -15

First, distributive property. Therefore, you multiply 3 with x and 7

3x + 21 = -15

Then, you need x to be isolated. So you will have to -21 from +21 on both sides of the equation to make it balanced.

3x + 21 = -15

<u>      -21     -21</u>    (21 will be canceled from the left side of the equation)

3x = -35

Lastly, you need to divide 3 from both sides of the equation, as 3 is multiplied with x.

<u>3x</u> = <u>-35</u>

3        3    (3 will be canceled from the left side of the equation)

<em><u>x = -7</u></em>

4 0
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IrinaVladis [17]

Answer:

d. only the first equation is an identity

Step-by-step explanation:

4 0
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