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Gelneren [198K]
3 years ago
11

Find the surface area of a triangular pyramid.

Mathematics
1 answer:
rusak2 [61]3 years ago
6 0

Answer:

91in^2

Step-by-step explanation:

SA of base =  7x7 = 49in^2

SA of each triangle = 1/2 x 7 x 3 = 10.5in^2

SA of all 4 triangles = 10.5 x 4 = 42in^2

SA Total = 49 + 42.= 91inch^2

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Daniel started a video game with 30 tokens. He earned 8 more tokens 0/10
WINSTONCH [101]

Answer:

2x(30+8-6)-20

Step-by-step explanation:

7 0
3 years ago
the number of states that entered the union in 1889 was half the number of states "s" that entered in 1788. which expression sho
blondinia [14]

Answer:

x = s/2

Step-by-step explanation:

● s states have joined the union in 1788

● half of s have joined in 1889

Let x be the number of states that have joined in 1889

● x = (1/2)× s

● x = s/2

3 0
3 years ago
Agatha is five times older than her son bob. three years ago she was nine times older. how old is agatha?
Naya [18.7K]
Write an equation system based on the problem
"Agatha is five times older than her son, Bob" could be written as:
  a = 5b.......(first equation)
"Three years ago, she was nine times older" could be written as:
  a - 3 = 9(b - 3)......(second equation)

Solve the equation system
To find the value of b, substitute 5b as a to the second equation
a - 3 = 9(b - 3)
5b - 3 = 9(b - 3)
5b - 3 = 9b - 27
5b - 9b = -27 + 3
-4b = -24
   b = -24/-4
   b = 6
Her son, Bob, is 6 years old

To find Agatha's age, substitute the value of b to the first equation
a = 5b
a = 5 × 6
a = 30
Agatha is 30 years old
4 0
3 years ago
‼️What’s the answer‼️
olasank [31]

Answer:

your answer is

Supplementery Angle;X=62

8 0
3 years ago
Plzz help I'LL GIVE BRAINLIEST AND 100 POINTS
Paul [167]

Answer:

6th graders have more participators in extracurricular activities than 4th graders.

There are more 6th graders than 4th graders that participate in extracurricular activities.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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