In a cookie jar 1/4 of the cookies are chocolate chip and 1/2 of the rest are peanut butter. what fraction of all the cookies is peanut butter? draw a fraction model to explain your thinking. then write an expression and solve.

Add the fractions and simplify 1/2+ 1/3

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b