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Vaselesa [24]
3 years ago
8

Suppose we want to choose a value of x within 3 units of 11. [This means a value of x that is less than 3 units away from 11.] T

hink about some values of x that meet this constraint. Write an inequality that represents all values of x that meet this constraint. On the number line below, represent all values of x that meet this constraint.

Mathematics
2 answers:
Dahasolnce [82]3 years ago
5 0

Answer:

(a) [8, 14]

(b)  8 \leq x \leq 14

(c)See attachment

Step-by-step explanation:

We want to choose a value of x within 3 units of 11.

(a)Now, 11-3=8 and 11+3=14

The possible values of x ranges is in the closed interval [8,14]

(b) Since x is within 3 units of 11., we have:

|11-x|\leq3

Solving the absolute inequality

-3 \leq 11-x \leq 3\\$In $ -3 \leq 11-x\\ x \leq 11+3\\x \leq 14\\\\$In $ 11-x \leq 3\\ 11-3 \leq x\\8 \leq x\\$Therefore,an inequality that represents all values of x that meet this constraint is:$\\8 \leq x \leq 14

(c)To draw the number line, we use a closed dot since we have the less than or equal to sign.

Crank3 years ago
4 0

Answer:

A. x ± 3 < 11

B.  x < 14

C. See the attachment

Step-by-step explanation:

A. Since the value of x is less than 3 units away from 11, we represent it in inequality form as x ± 3 < 11.

B. We now solve this inequality to obtain the values of x which satisfy the constraint.

So, x ± 3 < 11.

x + 3 < 11   and x - 3 < 11

x < 11 - 3  and x < 11 + 3

x < 8  and x < 14

Combining both inequalities,

x < 14

So for x to be less than 3 units away, x must be less than 14.

C. Find the representation on the number line in the attachment.

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