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Write an number sentence to add 6 ones to 21. Write a number sentence to add 6 tens to 21

using the counting principlessome lottery tickets consists of 6 numbers each ranging from 1 to 40. if repeated numbers are permitted, how many different tickets are there?

At a concession stand, 3 hot dogs and 4 hamburgers cost $11.50 ; 4 hot dogs and three hamburgers cost $11.25 Find the cost of one hot dog and the cost of one hamburger. What is the cost of one hot dog ?

Simplify 5a-2 (-3a + b).

the brunch buffet cost the same for each adult. for the family of 8, the total cost $272. how much did it cost per person

John is twice as old as Mary. The sum of their ages is 21. How old is Mary? Let J = John's age and M = Mary's age. Select the system equations that represents the problem. J - 2M = 0 M - 2J = 0 J + M = 21 J = M + 2

A function is defined by f (x) = x/4, what is f (-8)

Find tan θ if sec θ = √26/5 and sin θ < 0.

Why do you think you need to add zero pairs to get the - 1 - tiles to fit in the rectangle?

Could someone explain to me how to find the unit value for something?