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Keith_Richards [23]
2 years ago
7

I really need help on this question.!

Mathematics
1 answer:
IrinaVladis [17]2 years ago
4 0

Answer:

b = 135 \\ a + c = 45(ie \: 180 - 135)  \\ a =  \frac{45}{2}  \\ a = 22.5

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What is the value of a in the equation 38+ B equals 54 would b equals nine
Igoryamba

Answer:

If you want to know what b is then it is 16

Step-by-step explanation:

38 + b = 54

54- 38 = 16

38 + 16= 54

4 0
3 years ago
Suppose M is the midpoint
AysviL [449]

x   =   9

Since M is the midpoint of XY:

XM   =   MY

XM =  2x  +  11

MY  =  5x  -  16

2x  +  11   =  5x  -  16

5x  -  2x   =  11  +  16

3x    =   27

x    =  27/3

x   =   8

Learn more here: brainly.com/question/18315903

6 0
2 years ago
2 questions here:
solmaris [256]
<span>1. Make y the subject 
a) 4y=12x+18
y = 3x + 4.5

b) 2x=7-3y
3y = -2x + 7
y = -2/3x + 7/3

2.
a) what is the equation of the line which passes through both (-2,-4) and (6,16)

slope = (16 + 4)/(6 +2) = 20/8 = 2.5
y = mx + b
-4 =2.5(-2) +b
-4 = -5 +b
b = 1

equation
y = 2.5x + 1


b) what is the equation of the line perpendicular to y= 1/2X + 7 passing through point (3,9)

</span>y= 1/2X + 7
slope = 1/2

slope of line perpendicular = -2

passing through point (3,9)

y = mx + b
9 = -2 (3) + b
b = 15

equation

y = -2x + 15

6 0
3 years ago
Read 2 more answers
each year a tree grows 26 cm. after 4.5 years the tree is 292 cm. how tall was the tree when he moved into the house
jeka57 [31]
26×4=104
292-104=188
26÷2=13
188-13=175cm

the tree was 175cm when he moved in
7 0
3 years ago
Maggie wants to know how many students in her school enjoy watching sports on TV. She asks all 25 students in her math class and
RSB [31]
No, it is not a valid inference because her classmates do not make up a random sample of the students in the school.
6 0
3 years ago
Read 2 more answers
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