6th grade math , help me please

See explanation.

Step-by-step explanation:

a) Simply divide the number of triangles by the number of paralellograms.

3/6

b) 3/6 is equal to 1/2.

1/2

c) Multiply 2 by 10 to get 20. Now, you also have to multiply 1 by 10.

10/20

d) There are three shapes for every instance of the ratio. Divide 90 by 3.

30

Hope this helped!

r and t.

both are 64 degrees.

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -