Ask question

Ask question

All categories

goldfiish [28.3K]

3 years ago

9

Find the surface area of the equilateral triangular pyramid.

2 answers:

Mrac [35]3 years ago

8 0

The answer is 228. hoped this helped

11Alexandr11 [23.1K]3 years ago

5 0

Area = 3 * 1/2 * 10 * 12 + 1/2 * 12 * 8 = 180 + 48 = 228 answer

You might be interested in

Solve for y.<br><br> A. 90°<br> B. 115°<br> C. 108°<br> D. 130°

Mademuasel [1]

A) 90 degrees. Because it is

4 0

1 year ago

Read 2 more answers

Find the value of X

Aloiza [94]

The value of x would be 7

7 0

3 years ago

Study island, Please help? tysm!

9966 [12]

66 CUBIC INCHES ❤️❤️❤️❤️

5 0

3 years ago

Arman, Narek and Areg are brothers. Arman's age is five times as much as Areg's age and Narek is 12 years elder than Areg. If Na

Bumek [7]

Armans age : x
Aregs age: y

X = 5y
(15 - 12) = y. They said narek is 12 years older than areg so you deduct 12 years from nareks age which is 15.

So therefore y = 3. So Areg is 3 years old.

Since we know that y = 3
X = 5(3)
X = 15

So therefore Arman is 15 years and Areg is 3 years.

4 0

2 years ago

The speed of an elevator varies inversely with the weight it carries. If the elevator rises at 10 feet per second when it carrie

777dan777 [17]

Answer:

$8\frac{ft}{sec}$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

Let

x-----> the speed of the elevator

y----> the weight it carries

so

$y*x=k$

<em>Find the constant k</em>

For x=10 ft/sec, y=400 lb

substitute

$k=10*400=4,000$

The equation is

$y*x=4,000$

Find the speed for y=500 lb

substitute in the equation

$500*x=4,000$

$x=4,000/500=8\frac{ft}{sec}$

5 0

3 years ago