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Ipatiy [6.2K]
3 years ago
9

A certain building has a triangular shaped face to link up of the sides of the triangular base or 145 feet 257 feet in 290 feet

five find the area of the base of the building
Mathematics
1 answer:
attashe74 [19]3 years ago
3 0

Answer:

18617.66 ft^2

Step-by-step explanation:

sides of triangular base

a=  145ft  ,

b = 257ft ,

c =  290ft

<u>calculate the area of the base  </u>

The base is a scalene triangle hence the area is calculated as follows

s = ( a + b + c ) / 2

  = ( 145 + 257 + 290 ) / 2 = 346

Area of triangle = \sqrt{s(s-a)(s-b)(s-c)}  = \sqrt{346(201)(89)(56)}

                          = 18617.66 ft^2

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If (x+yi)+6i=2, what is x+y
sergiy2304 [10]

Answer:

-4

Step-by-step explanation:

(x+yi)+6i=2

Set the real terms equal

x =2

Set the imaginary parts equal

y +6 = 0

Subtract 6 from each side

y+6-6=0-6

y = -6

We want to find x+y

2-6

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6 0
4 years ago
Resuelve el siguiente sistemas de ecuaciones por el método
marishachu [46]

Answer:

x=10 and y=12

Step-by-step explanation:

To solve this quadratic equation we will use two method

1. Elimination method

2. substitution method

first of we use elimination method

we either eliminate x or y

we will be eliminating y

83x-20y=590..........(eq1)

60x+18y=816...........(eq2)

y will be eliminated by multiplying

(eq1) by 9

(eq2) by 10

which will give

747x-180y=5310.........(eq3)

600x-180y=8160.........(eq4)

see that y has the same value that is (-180y and +180y)

so to eliminate y completely you have to add eq1 and eq2 because if you don't add them together you wont eliminate y

747x-180y=5310

+

600x+180y=8160

=

1347x+0=13470

1347x=13470

x=13470/1347

x=10

Now to find y we use substitution method ie put x=10 in any of the equation above(eq1,eq2,eq3, eq4) you will get the same answer

eq1

83x-20y=590..... where (x=10)

83(10)-20y =590

830-20y=590

like terms

-20y=590-830

-20y= -240

divide both sides with -20

y= -240/-20

y=12

OR

eq2

60x+18y=816..... where x=10

60(10)+18y=816

600+18y=816

like term

18y=816-600

18y=216

y=216/18

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or eq3 or eq4 you will still get the same answer......

7 0
3 years ago
Please help! This boxed is packed with cubes that measure on cubic foot.
Vsevolod [243]

Answer:

Volume of Cuboid = 72 cubic feet

Step-by-step explanation:

Using 1 cubic foot as standard

Given:

Length of given cuboid = 6 feet

Width of given cuboid = 3 foot

Height of given cuboid = 4 foot

Find:

Volume of Cuboid

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Volume of Cuboid = Length of cuboid x Width of cuboid x Height of cuboid

Volume of Cuboid = (6)(3)(4)

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3 0
3 years ago
To get on the top players’ list, Don needs to have a minimum average score of 225 after playing four games. His scores on his fi
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First, identify the formula you will use.

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5 0
3 years ago
Read 2 more answers
700 – 35w = 450 + 15w
mihalych1998 [28]

Answer:

5

Step-by-step explanation:

700-35w=450+15w

Subtract 15 from -35

700-50w=450

Subtract 700 from 450

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divide -250 by -50w

answer is 5

6 0
4 years ago
Read 2 more answers
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