PICTURE ONE IS FOR THESE BELOW What is the value of ∠DOB in the following figure?
The measure of an angle is 89°. Find the measure of its supplement.
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Determine if triangles can be formed with the following side lengths:

1.) 4 cm, 7 cm, 10 cm

2.) 24 mm, 20 mm, 30 mm

1: n=17

2: x=24 w=37

Step-by-step explanation:

1st picture: 180-108=72/2=34/2=17=n

2nd Picture: 90+19= 109

109+x+w=180

138+90=228

270-228=52

138+52+90+19=299

360-299=61

x=24 w= 37

d

step-by-step explanation:

the solution is in the picture

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x