∠BDC=30, so ∠CBD + ∠BCD=180-30=150
ΔDBC is isosceles, so ∠CBD=∠BCD=half of 150=75
∠ABC=∠ABD-∠CBD=155-75=80
ΔABC is isosceles, so ∠ABC=∠ACB=80
∠BAC=180-80-80=20

7 0

4 years ago

A recipe calls for 3 3/4 cups of milk. If the recipe is doubled, how much milk is needed?

denpristay [2]

Initially, milk needed = 3 3/4 = 15/4

If it doubles, 15/4 * 2 = 30/4 = 15/2 in fraction form

OR 7.5 in decimal form

OR 7 1/2 in mixed form

5 0

4 years ago

This is dividing monomials and I’m really struggling!!

Natalija [7]

Answer:

$\frac{3 {a}^{4} {b}^{2} + 6 {a}^{2} }{3 {a}^{2} }$

$= \frac{3 {a}^{4} {b}^{2} }{3 {a}^{2} } + \frac{6 {a}^{2} }{ 3{a}^{2} }$

${a}^{2} {b}^{2} + 2$

<h3>Option A</h3>

6 0

3 years ago