2 years ago

I need help - Geometry - 15 points + brainlyist - 1 question -

Mathematics

2 answers:

lara [203]2 years ago

8 0

Answer:

$120 = (15 + 22)x + 4 + 5 \\ 120 - 9 = 37x \\ 111 = 37x \\ x = 111 \div 37 = 3 \\$

$15x + 5 = 3 \times 15 + 5 = 50$

ioda2 years ago

5 0

Answer:

Angle DCB = 60 degrees

Step-by-step explanation:

Line AD = 120

Angle D = 180 - 120 = 60

60 + 15x + 5 + 22x + 4 = 180

69 + 37x = 180

37x = 111

x = 3

15 ( 3 ) + 5 + 22 ( 3 ) + 4 + y = 180

45 + 5 + 66 + 4 + y = 180

50 + 70 + y = 180

120 + y = 180

y = 60

You might be interested in

Put -3x+2y=10 into y=mx+b

Natasha2012 [34]

Answer:

y=3/2x+5

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

5 pounds of apples costs $7.45 . what is the dependent and the independent variables

Vlada [557]

$7.45

5pounds

13.74065 US$

5 0

3 years ago

The perimeter of the scalene triangle is 54.6 cm.

valina [46]

Are you sure it’s a scalene triangle because if you only know one side and all the other sides are different lengths then it’s impossible to computer unless we know angle measures. It would have to be isoceles or we would need angle measures

5 0

3 years ago

Peter has twice as many stickers as Joe. Joe has 40 more stickers than Emily. They have 300 Stickers altogether. How many sticke

GarryVolchara [31]

Answer:

170

Step-by-step explanation:

Equations derived from given info.

P=2J
J=E+40
P+J+E=300

Use some substitution now.

P=2(E+40)
J=E+40
P+J+E=300

Substitute first and second equation into third.

2(E+40)+E+40+E=300
2E+80+E+40+E=300
4E+120=300
4E=180
E=45

Emily has 45 stickers. But we want to know what Peter has.

Use P=2(E+40)

P=2(45+40)
P=90+80
P=170

Peter has 170 stickers.

4 0

3 years ago

Determine whether the triangles are similar by aa , ss , or sas ??

max2010maxim [7]

Answer:

1. AA

2. SSS

3. I´m not sure about this one, I´m sorry

4. Not similar

Step-by-step explanation:

This photo can help you identify!! I hope this helps

4 0

3 years ago