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Ivanshal [37]
2 years ago
9

Can someone please answer this for me

Mathematics
1 answer:
adoni [48]2 years ago
6 0

Answer:

x = -7, A = 65 degrees

Step-by-step explanation:

[It is important to know that in any triangle, the sum of all three angles is equal to 180 degrees]

Therefore,

x + 72 + x + 51 + 71 = 180

2x + 194 = 180 [collect like terms]

2x = -14 [subtract 194 from both sides]

x = -7 [divide both sides by 2]

To find A, we substitute the value of x into x + 72:

A = (-7) + 72

A = 65 degrees.

Hope this helps! :D

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The attendance at a family reunion was 160 people. This was 125% of last year's attendance. How many people attended the reunion
Alex787 [66]
If you would like to know how many people attended the reunion last year, you can calculate this using the following steps:

125% of last year's attendance is 160 people
125% of x is 160
125% * x = 160
125/100 * x = 160     /*100/125
x = 160 * 100 / 125
x = 128 people (last year)

Result: 128 people attended the reunion last year.
4 0
3 years ago
Domain of (x-5)(x+5)
soldier1979 [14.2K]
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3 years ago
In my class we're working with inequalities. I understand the overall concept and have worked through most of the problems, but
Nuetrik [128]
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3 0
4 years ago
PLEASE ANSWER ILL GIVE YOU BRIANLIEST
MariettaO [177]

Answer:

y-intercept = -2

x-intercept = -4

Step-by-step explanation:

y-intercept is the point where x = 0. Hence,

y-intercept = -2

x-intercept us the point where y = 0. Hence,

x-intercept = -4

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3><h3>Peace!</h3>
7 0
3 years ago
If 5x+15y=45 then 6x-18y=?
vovangra [49]
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x+3y=9
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if it was 6x+18y then the answer is 54
if it was 6x-18y, then I don't know the answer
4 0
3 years ago
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