Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. Choose the correct answer for the unit tangent vector of:1) (sin t)j + (cost)k2) (- cos t)j + (sin t)k 3) (sin 2t)j +(cos 2t)k 4) (-cos 2t)j + (sin 2t)k

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Which graph represents the given linear function 4x+2y=3