There are only red buttons, yellow buttons and orange buttons in a jar. the number of red buttons, the number of yellow buttons and the number of orange buttons are in the ratio 7 : 4 : 9 work out what percentage of the buttons in the jar are orange

45%

Step-by-step explanation:

Add 7,4, and 9. You will get 20, then since they are asking for orange, divide 9 by 20, you will get 0.45 or 45%.

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(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180