Because this may not be the question you want, I'll omit the first step which should be done with latex. The key to all of these except C is to invert the second fraction (turn the second fraction upside down) and multiply.

$\dfrac{6}{5} * \dfrac{-2}{3}$

=(6*-2) / (5*3) = - 12/15 = -4/5

$\dfrac{7}{4} *\dfrac{5}{3}$

= (7*5) / (4*3) = 35 / 12 = 2 11/12

Impossible to do 4/0 cannot be done.

$\dfrac{-2}{3} /\dfrac{-5}{4}=\dfrac{-2}{3} *\dfrac{-4}{5}$

= (-2*-4)/(3*5) =

8/15

4 0

4 years ago

What is the value of x in this figure?

slega [8]

Check the picture below.

$\bf 10\cdot \stackrel{cos(30^o)}{\cfrac{\sqrt{3}}{2}}=x\implies 5\sqrt{3}=x$

5 0

3 years ago

8th grade algebra! please help. 20 points. due in 10 minutes. question is in the picture.

satela [25.4K]

Answer:

Step-by-step explanation:

.45y+.3(0) = 3.6

y=8

8 does not equal 12

8 0

3 years ago