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Ipatiy [6.2K]
3 years ago
8

Find the area of a triangle with sides 13 meters, 12 meters, and 5 meters

Mathematics
1 answer:
pantera1 [17]3 years ago
8 0

Answer: the area is 390

Step-by-step explanation:

you multiply 13 by 12 by 5 which is 780 then divide by 2

which is 390

there fore the area is 390

.w.

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The number of employees per department are normally distributed with a population standard deviation of 198 employees and an unk
cricket20 [7]

Answer:

EBM = +-54.126

Step-by-step explanation:

In this question we have confidence interval to be 80%

The formula to solve this is in the attachment.

Bar X = 1460

Z-alpha/2 = 1.282

Sd = standard deviation = 198 employees

n = 22 departments

After we have inserted all values in to the formula we have:

1460 +-(1.282*198/√22)

= 1460+-(54.12604)

= (1405.87, 1514.126)

The error bounded mean EBM

= +-z-alpha/2 x (sd/√n)

= 1.282 x 198/√22

= 1.282 x 42.22

EBM = +-54.126

6 0
3 years ago
2a+ 4b +30<br><br><br> 16 points
oee [108]

Answer:

2(a+2b+15)

Step-by-step explanation:

hope this helps!

8 0
3 years ago
The perimeter of an equilateral triangle is 63 inches. If the length pf each side is (4x-3), write an equation and find the valu
Nady [450]

Answer:

x = 6

Step-by-step explanation:

Givens

There are 3 sides. All are equal to (4x - 3)

Their sum = 63

Formula

3(4x - 3) = 63

Solution

  • 3(4x - 3) = 63            Divide by 3
  • 12x - 9 = 63               Add 9 to both sides
  • 12x = 63 + 9    
  • 12x = 72                    Divide by 12
  • x = 72/12

x = 6                          Answer  

7 0
3 years ago
Evaluating expressions please help
MAXImum [283]

Answer:

-15

Step-by-step explanation:

-1-7*(2)=-1-14=-15

6 0
2 years ago
-17 rational or irrational
guajiro [1.7K]

Answer:

rational

Step-by-step explanation:

3 0
3 years ago
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