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2 years ago

The sum of a number x and 4 is less than 12 which of the following inequalities represents this statement

Mathematics

1 answer:

blsea [12.9K]2 years ago

5 0

Answer:

x < 8

Step-by-step explanation:

All you need to do is solve the inequality for x, by moving 4 to the right side as I have shown below:

x + 4 < 12

x + 4 - 4 < 12 - 4

x < 8

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The ratio of two side lengths for the triangle is given. What is the value of “q” AB:BC is 3:4

Vera_Pavlovna [14]

Answer:

$q=8.5$

Step-by-step explanation:

The ratio of the side lengths (AB) and (BC) is given. One is also given an expression for the side lengths of each of these sides. Set up a proportion to describe this scenario, then solve using cross products;

$\frac{AB}{BC}=\frac{3}{4}$

Substitute,

$\frac{60}{10q+15}=\frac{3}{4}$

Cross products,

$\frac{60}{10q+15}=\frac{3}{4}$

$(60)(4)=(10q+15)(3)\\\\240=30q+45$

Inverse operations,

$240=30q+45\\\\195=30q\\\\8.5=q$

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