.4 A store sells two sizes of mattresses: queen and king. It buys q queen mattresses at x dollars each, and k king mattresses at z dollars each. For each situation, write an equation solved for the given quantity. The equations may contain more than one variable; you may not get a numeric answer. a) The number of queen mattresses the store can purchase if it spends a total of $50,000 on mattresses and buys 40 king mattresses for $400 each.

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step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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answer:

a=9

step-by-step explanation: lmk if you need a explanation

answer: list the statements and i will follow up!

step-by-step explanation: