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Dimas [21]
3 years ago
10

I have NO IDEA how to do these:

Mathematics
2 answers:
kirill [66]3 years ago
7 0
1) C. 100

a pentagon has 540 degrees 

130 + 130 + 90 + 90 + x = 540
440 + x = 540 
x = 100

2) C. 169

a hexagon has 720 degrees

151 + 135 + 115 + 75 + 75 + x = 720
551 + x = 720
x =169



Rudik [331]3 years ago
5 0
The first is c! im still trying to figure out the second 
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Nimfa-mama [501]

Answer:

y=12

Step-by-step explanation:

This equation cannot be simplified further.

Hope this helped! :)

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Determine how many solutions each equation has without using inverse operations. Explain your reasoning for each.
GuDViN [60]

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  an infinite number

Step-by-step explanation:

The left side of the equation is a restatement of the right side of the equation. It is true for all values of x. There are an infinite number of solutions.

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4 years ago
Which expression is equivalent to – 12 + (-4/5) + 31 and includes the correct justification for the equivalence?
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Step-by-step explanation:

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3 years ago
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Flauer [41]

Answer:

\large\boxed{\dfrac{15}{60}=\dfrac{5}{20}=\dfrac{3}{12}=\dfrac{1}{4}}

or

\large\boxed{\dfrac{15}{60}=\dfrac{30}{120}=\dfrac{45}{180}=\dfrac{60}{240}}

Step-by-step explanation:

Divide the numerator and the denominator by the same number:

\dfrac{15}{60}\\\\=\dfrac{15:5}{60:5}=\dfrac{3}{12}\\\\=\dfrac{15:3}{60:3}=\dfrac{5}{20}\\\\=\dfrac{15:15}{60:15}=\dfrac{1}{4}\\\vdots

or

Multiply the numerator and the denominator by the same number:

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7 0
3 years ago
Read 2 more answers
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Marysya12 [62]
A translation of 2 units up will increase the y coordinate by 2 units and a translation by 5 units to the left will decrease the x coordinate by 5. Hence after these translations point (2,2) becomes 

<span>(2 - 5 , 2 + 2) = (-3,4) </span>

When point (-3,4) is reflected in the x axis, its y coordinate changes sign and point (-3 ,4) becomes 

<span>(-3,-4)</span>
5 0
3 years ago
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