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Nimfa-mama [501]
2 years ago
6

Determine the measure of the seventh interior angle of a heptagon (a seven-sided polygon) if you know the other six measures are

135
129 129 127 131", and 124
Mathematics
2 answers:
o-na [289]2 years ago
8 0

Answer: the answer is 125

Step-by-step explanation:

Lemur [1.5K]2 years ago
7 0

Answer:

125 deg

Step-by-step explanation:

(n - 2)180

n = 7

(7 - 2)180 = 5(180) = 900

900 - 135 - 129 - 129 - 127 - 131 - 124 = 125

Answer: 125 deg

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I need help ASAP middle school work.
Arturiano [62]

Answer:

B

Step-by-step explanation:

For 11  1/2 gallons, he paid $36.80.

We need to find the cost per gallon.

First, converting 11  1/2 gallons to decimal, it is:

1/2 = 0.5

So, 11  1/2  is  11.5 gallons

So, Cost Per Gallon (last week) = \frac{36.80}{11.5}=3.2

There is 5% increase on this $3.20 per gallon. We find 5% of 3.2 and add it to 3.2 to find this week's cost per gallon.

<em>5% = 5/100 = 0.05</em>

<em>0.05 * 3.20 = 0.16</em>

<em>So,</em>

<em>3.20 + 0.16  = $3.36 per gallon</em>

<em />

Cost Per Gallon (this week) = $3.36

To buy 9  1/4 gallons it would take:

3.36*9.25=31.08

<u>Note:</u>  1/4 = 0.25, so 9  1/4 = 9.25

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Correct answer is B

5 0
3 years ago
Nolan draw a right triangle. how many acute angles did he draw
mamaluj [8]
He drew one acute angle
8 0
3 years ago
Identify the slope (m) and y-intercept (b) of each linear equation.<br> 52. 3x+4y=24
nekit [7.7K]

Answer:

Step-by-step explanation:

  [1]    3x - 4y = -24

  [2]    -x - 16y = -52

Graphic Representation of the Equations :

   -4y + 3x = -24        -16y - x = -52  

 

Solve by Substitution :

// Solve equation [2] for the variable  x

 [2]    x = -16y + 52

// Plug this in for variable  x  in equation [1]

  [1]    3•(-16y+52) - 4y = -24

  [1]     - 52y = -180

// Solve equation [1] for the variable  y

  [1]    52y = 180

  [1]    y = 45/13

// By now we know this much :

   x = -16y+52

   y = 45/13

// Use the  y  value to solve for  x

   x = -16(45/13)+52 = -44/13

Solution :

{x,y} = {-44/13,45/13}

8 0
3 years ago
Which ordered pair is a solution to the system?
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all you have to do is see whether both variables of each point meet both contraints:

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5 0
3 years ago
X^2-81 (answer using factoring polynomials)
shepuryov [24]

Answer:

90

Step-by-step explanation:

3 0
3 years ago
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