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allsm [11]
3 years ago
10

Question 3

Mathematics
1 answer:
insens350 [35]3 years ago
6 0
I think it is the 3 one
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Assignment due soon! Need help
Natali [406]
Answer: 30°

Step by step explanation:
1) Supplementary angles add up to 180°
2) (2x+10)+(5x-40)=180
3) solve for x
4) x=30
6 0
3 years ago
What is the sum of (8b+7)+(6x-4)+(5c+8)?????
34kurt

Answer:

8b + 6x + 5x + 18

Step-by-step explanation:

8b + 7 + 6x + 4 + 5c + 8

8b + 6x + 5x + 18

Answer:  8b + 6x + 5x + 18

8 0
3 years ago
Read 2 more answers
Jen Butler has been pricing​ Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $ 132.
laiz [17]
Let a=price of adult ticket
let c=price of a child's ticket
start out by writing the following system of equations:
3a+4c=132
2a+3c=94
then, multiply the first equation by 2, and the second equation by 3 to get the following system of equations:
6a+8c=264
6a+9c=282
subtract the like terms to get the following equation:
-c=-18
divide both sides by -1 to get rid of the negative to get the price of a child's ticket to be $18. to find the price of an adult ticket, pick one of the original equations to substitute the 18 in for c to find a. for example:
2a+3c=94
2a+3(18)=94
2a+54=94
-54 -54
2a=40
2 2
a=20

or if you decide to use the other equation:
3a+4c=132
3a+4(18)=132
3a+72=132
-72 -72
3a=60
3 3
a=20
either way, you still get an adults ticket to be $20 and a child's ticket to be $18.
8 0
3 years ago
A ray that contains a point that is equidistant from both sides of the angle. *
seraphim [82]
<span>Consider a angle â BAC and the point D on its defector Assume that DB is perpendicular to AB and DC is perpendicular to AC. Lets prove DB and DC are congruent (that is point D is equidistant from sides of an angle â BAC Proof Consider triangles ΔADB and ΔADC Both are right angle, â ABD= â ACD=90 degree They have congruent acute angle â BAD and â CAD( since AD is angle bisector) They share hypotenuse AD therefore these right angle are congruent by two angle and sides and, therefore, their sides DB and DC are congruent too, as luing across congruent angles</span>
3 0
3 years ago
I need help please!!!
ludmilkaskok [199]

Answer:

x ≥ -1

Step-by-step explanation:

the red fully circle in -1 show that -1 is include

8 0
3 years ago
Read 2 more answers
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