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3 years ago

6

The ratio of students packing lunch to those buying lunch is 2 : 9. The number of students buying lunch is how many times the nu

mber of students packing lunch?

1 answer:

DedPeter [7]3 years ago

4 0

Answer:

4.5 times

Step-by-step explanation:

Packing to Buying is 2:9

Therefore, Buying to Packing will be 9:2.

9/2 = 4.5

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3 years ago

Factor x3 – 7x2 – 5x + 35 by grouping. What is the resulting expression?

Aliun [14]

Answer:

$(x-7)(x-\sqrt{5})(x+\sqrt{5})$

Step-by-step explanation:

The given expression is

$x^3-7x^2-5x+35$

Factor the first two and the last two.

$x^2(x-7)-5(x-7)$

$(x-7)(x^2-5)$

Apply difference of two squares to the leftmost factor.

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