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liubo4ka [24]
3 years ago
6

GEOMETRY PLEASE HELP!!! What is the surface area of the square pyramid shown if the height is 15 m?

Mathematics
1 answer:
Sindrei [870]3 years ago
4 0

Answer:

The answer is 180 cm.......

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What is the equation of the quadratic graph with a focus of (3,4) and a drirectrix of y =8
Pie

check the picture below.  So the parabola looks more or less like so.


bearing in mind that the distance "p" is the same from the vertex to the directrix or the focus point, so the vertex is therefore half-way between those two fellows, now, from 3,4 up to y = 8, there are 4 units, and the vertex is half-way, thus is at y = 6, and x = 3, (3, 6) as you see there in the picture.

the parabola is vertical, meaning the squared variable is the "x", and is opening downwards, meaning the "p" distance is negative, so since "p" is 2 units, then p = -2.


\bf \textit{parabola vertex form with focus point distance}
\\\\
4p(y- k)=(x- h)^2
\qquad
\begin{array}{llll}
vertex\ ( h, k)\\\\ p=\textit{distance from vertex to }\\
\qquad \textit{ focus or directrix}
\end{array}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\begin{cases}
h=3\\
k=6\\
p=-2
\end{cases}\implies 4(-2)(y-6)=(x-3)^2\implies -8(y-6)=(x-3)^2
\\\\\\
y-6=\cfrac{(x-3)^2}{-8}\implies \blacktriangleright y=-\cfrac{1}{8}(x-3)^2+6 \blacktriangleleft

8 0
3 years ago
Find the length of the missing side <br>The length of the missing side is​
givi [52]

Answer:

52 m

Step-by-step explanation:

a^2 + b^2 = c^2

a^2 + 39^2 = 65^2

a^2 + 1521 = 4225

4225 - 1521 = 2704

Square root of 2704 = 52

7 0
3 years ago
Read 2 more answers
I just need help on this.​
Vladimir79 [104]

3/5

Since 3 is also 3/1 and 3/1 × 1/5 = 3/5

3 0
3 years ago
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Use the expression 5(6 + 4x) to answer the following: Part A: Describe the two factors in this expression. (4 points) Part B: Ho
Nikolay [14]

Answer:

Part A: The two factors are 6 and 4x. Part B: Question is confusing Part C: The coefficient of the variable is 4.

Step-by-step explanation:

Factors are what gets multiplied to give a product, therefore, 6 and 4x are the products as they are both being multiplied by 5. I don't understand what you are asking for part b. Part C, the coefficient is any number that is multiplied with the variable next to in. For example, in 16x, 16 is the coefficient and x is the variable. In 9y, 9 is the coefficient and y is the variable.

7 0
2 years ago
Find the area of the rectangle ​
tia_tia [17]

Answer:

\frac{6}{7} yd^{2}

Step-by-step explanation:

Area is the width (6/7 yd) multiplied by the height (1 yd).

6/7 x 1 = 6/7 yd^{2}

3 0
2 years ago
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