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icang [17]
3 years ago
12

The base edge of the regular triangular pyramid is b=10 cm and altitude of the base hb ≈ 8.66 cm. The slant height of the pyrami

d is k=8 cm. Find: a Lateral area of the pyramid
Mathematics
1 answer:
faust18 [17]3 years ago
8 0

Answer:

Lateral Area: 120                                                                                    

Surface Area: 163.3

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Is 8.54 rational i am stuck and cant find answers
mina [271]
Yes 8.54 as rational number because in can be written as 854/100
5 0
3 years ago
Read 2 more answers
Please help meeeeeee.
ruslelena [56]
The perimeter represents the amount of wood needed and the area represents the amount of class needed.  

so 2*(2/3) +  2(2) = 4/3 + 4= 4 4/3 or 5 1/3 wood is needed for the border.

for the mirror, you will need the area= 4/3 * 2 = 8/3 sq yds or 2 2/3 sq yards is needed.

6 0
3 years ago
Write an experission that representes the difference of y and 32.plus the product of y and 4​
pentagon [3]

Answer: y-32+4y

Step-by-step explanation:

y-32: the difference of y and 32. +4y : <u>plus the product of y and 4​</u>

7 0
2 years ago
What is the answer for this question
Aliun [14]
-1/2 / 3/4 =

The first step is to flip the second fraction and change division to multiplication. Then multiply straight across.

-1/2 x 4/3 = -4/6

In simplified form:
-4/6 = -2/3
8 0
3 years ago
Complete each statement in the steps to solve x2 – 6x – 7 = 0 using the process of completing the square. Isolate the constant b
Tomtit [17]
"Isolate the constant by adding 7 to both sides of the equation."
This step separates the non-squareable 7 and the squareable x^2 - 6x .

"Add 9 to both sides of x^2 - 6x = 7 to form a perfect square trinomial while keeping the equation balanced."
After separating the non-squareable, add the number which makes the first or left side a perfect square trinomial. The formula to find the number is: c =  {\frac{b}{2}  }^{2} .
When we plug the values: c =  { \frac{ - 6}{2} }^{2}
Simplify: c =  {( - 3)}^{2}  = 9

"Write the trinomial x^2 - 6x + 9 as (x - 3) squared."
When you factor x^2 - 6x + 9 , you will get (x - 3) \times (x - 3) .

"Use the square root property of equality to get x - 3 = ±  \sqrt{16} ."
The 16 is coming from the part when we add 9. We needed 9 on the left side for a perfect square, but to protect the balance of the equality, we need to add 9 to the right side too. When we add 7 and 9, we got 16, and that is where it came from.

"Isolate the variable x to get solutions of -1 and 7."
To isolate x we branched the plus-minus sign:
x - 3 = 4 \: \:  \:  x = 4 + 3 = 7 \\  \\ x - 3 =  - 4 \:  \:  \: x =  - 4 + 3 =  - 1
8 0
2 years ago
Read 2 more answers
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