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RSB [31]
3 years ago
15

98 POINTS AVAILABLE

Mathematics
2 answers:
Elis [28]3 years ago
7 0

1st question:

The formula for area of a triangle given 3 side lengths is A = √(s(s-a)(s-b)(s-c))

where s = (a+b+c)/2

s = (50 + 45 + 25) /2 =  120/2 = 60

Area = √(60(60-50)(60-45)(60-25)

Area = √(60*10*15*35)

Area = √315000

Area = 561.25

Rounded to nearest whole number = 561 square meters.

2nd question:

b. Increasing the number of trapezoids increases the accuracy of the area calculation

c. The area of all the trapezoids can be added together to find the area under the curve.

Helga [31]3 years ago
4 0

Answer:

how do i exit

Step-by-step explanation:

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Area =hb
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Bingo uses the numbers 1-75. If you randomly select a number, what is the probability it will not be a multiple of ten? Explain
ValentinkaMS [17]

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7 0
4 years ago
AB describes a line.
Fynjy0 [20]

Answer:

y = 3x + 12

Step-by-step explanation:

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Here m = 3 , then

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3 0
3 years ago
2x+4y+2z= -8<br> 5y-2z= 0<br> 4z= -20
kondaur [170]

Answer:

The given solution for the system is x = 5, y = -2 and z = -5

Step-by-step explanation:

Here, the given set of equations are:

2 x + 4 y +2 z = -8

5 y- 2 z = 0

4 z = -20

Now, simplifying each question one by one ,we get:

Simplifying third equation for the value of z:

4 z = -20 ⇒ z  = -20 / 4 = - 5

or, z =  -5

Simplifying second equation for the value of y:

Substitute the value of z  = -5 in (2) , we get

5 y- 2 z = 0    ⇒ 5 y - 2(-5)  = 0

or, 5 y + 10 = 0

or, 5 y = -10

or, y  =  -10/5 = -2

⇒ y = -2

Simplifying first equation for the value of x:

Substitute the value of z  = -5 and y  = -2 in (1) , we get

2 x + 4 y + 2 z = -8  ⇒ 2 x + 4 (-2) + 2 (-5) = -8

or,  2 x - 8 - 10 = -8

or, 2 x = 10

x = 10 / 2  = 5, or x  = 5

Hence, the given solution for the system is x = 5, y = -2 and z = -5

7 0
3 years ago
If C + 10 equals 17 what is C + 5​
mihalych1998 [28]

Answer:

The answer is 12, subtract 17 from 10 to get 7, then add 7 to 5

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