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Studentka2010 [4]
3 years ago
14

Please help I'm almost done the test and need this and one other question ​

Mathematics
1 answer:
PolarNik [594]3 years ago
6 0

Answer:

z=68

Step-by-step explanation:

Use the formula 180\times(n-2) to find the sum of the angles in a polygon, given <em>n</em> sides. This formula tells us the angles of this pentagon must add to 540 (180\times(5-2)=540).

So, we can setup an equation:

70+2z+11+119+z+2z=540

Solve for z:

200+5z=540 Combine like terms

5z=340 Subtract 200

z=68 Divide by 5

Therefore, the value of z = 68.

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The graph shows the function y=3x-1. What are the cordinates of intercepts
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Answer:

y \: intercept  : when \: x = 0 \\ y = (3 \times 0) - 1 =  - 1  \\  =  >  (0, - 1) \\ x \: intercept : when \: y = 0 \\ 0 = 3x - 1 \\ x =  \frac{1}{3}  \\  =  > ( \frac{1}{3} ,0) \\ intercepts : (0, - 1) \: and \:  ( \frac{1}{3} ,0)

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3 years ago
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Alex777 [14]
2/20 is a possibility 
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3 years ago
Read 2 more answers
221/x=17 this is a fraction i am not sure about having to do with algebra please comment on how you figured this one out. please
Gnesinka [82]
Here are the steps to solve this equation:
221/x = 17
221 = 17x
17x = 221
17x ÷ 17 = 221 ÷ 17
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3 0
3 years ago
Please help meeeeeee!
marishachu [46]

Answer:

2x^2+x-1/x^2-1

x^2+11x+18/x^2-11x+18

2x^2-5x+3/x^2+4x+3

Step-by-step explanation:

1.2 and 5

6 0
3 years ago
In 2005, the shabelle river in Somalia rose an estimated 5.25 inches every hour for 15 hours. The increase in water level is rep
Georgia [21]

Answer:

The Given situation is In 2005, the shabelle river in Somalia rose an estimated 5.25 inches every hour for 15 hours.

Increase in water level is represented by the function,f(x)=5.25 x.

or replacing f(x) by y we get ,y= 5.25 x

This is equation of straight line passing through the origin.

As x is number of hours , so x> 0,(0,∞] Which is it's domain.

As x> 0, so Range is those values of y for which x is defined.

x= \frac{y}{5.25},So Range is y>0 i.e (0,∞}

As the function has no breaking point , that is when you plot the graph on coordinate axis there is no breaking point.So , it is everywhere continuous i. e for all values of x.





3 0
3 years ago
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