Can anybody help me with trying to figure out how to do this?

a. Angle A  = 35

As triangle ABD has angle ADB equal to 90°

=> ABD is the right triangle

=> Angle ABD + Angel A = 90°

=> Angel A = 90° - Angel ABD = 90°- 55° = 35°

So Angel A = 35°

b. Angle CBD = 61

As triangle BDC has angle BDC equal to 90°

=> BDC is the right triangle

=> Angle CBD + Angel C = 90°

=> Angel CBD = 90° - Angel C = 90°- 29° = 61°

So Angel CBD = 61°

c. AD = 32.77

As ABD is the right triangle, so that we have the formula:

sin (an angel) = opposite side/ hypotenuse

=> sin angel ABD = AD/ AB

=> AD = sin angel ABD x AB = sin 55° x 40 ≈ 32.77

So AD = 32.77

d. BC = 47.32

As ABD is the right triangle, according to Pythagoras theorem, we have:

=> BD ≈ 22.94

As BCD is the right triangle, so that we have the formula:

sin (an angel) = opposite side/ hypotenuse

=> sin angel C = BD/ BC

=> BC = BD/ sin angel C = 22.94 / sin 29° ≈ 47.32

So BC = 47.32

e.  CD = 41.39

As BCD is the right triangle, according to Pythagoras theorem, we have:

=> CD ≈ 41.39

f. BD = 22. 94 (part d)

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)  

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: