All categories

3 years ago

X−7<14 Options: x<7 x>21 x<21 x>7

Mathematics

2 answers:

guajiro [1.7K]3 years ago

6 0

This is a simple equation:

x - 7 < 14

x < 14 + 7

x < 21

→ Many people think that because there is not "=" sign they don't flip the sign of what in this case is -7. But actually, the symbols "<" and ">" act as the equal sign. This rule doesn't apply to positive number, only negative.

Hope it helped,

BioTeacher101

(If you have any questions, feel free to ask them in the comments)

Fantom [35]3 years ago

5 0

x - 7 < 14

To solve, you must isolate the x. Add 7 to both sides

x - 7 (+7) < 14 (+7)

x < 14 + 7

x < 21

x<21, or (C) is your answer

Note: You only flip the signs if you are multiplying or dividing by a negative number

hope this helps

You might be interested in

The owner of a miniature golf course asks you to design the shape of the green section. He has several requirements

liraira [26]

This is my interpretation of the questions answer. If you are thinking of a design ten just make a snake one. Its simple but not hard.

7 0

4 years ago

Which of the following relations is a function?

Gnom [1K]

Answer:

the answer is C

Step-by-step explanation:

5 0

3 years ago

Explain this to me pleaseeeee

Liula [17]

Wow what grade you in??

3 0

3 years ago

The domain of both

Margarita [4]

Answer:

The domain of function $h(x)$ is set of all real numbers.

Domain: (-∞,∞)

Step-by-step explanation:

Given:

$f(x)=x-6$

$g(x)=x+6$

the domain of both the above functions is all real number.

To find domain of :

$h(x)=f(x)g(x)$

Substituting functions $f(x)$ and $g(x)$ to find $h(x)$

$h(x)=(x-6)(x+6)$

The product can be written as difference of squares. $[a^2-b^2=(a+b)(a-b)]$

∴ $h(x)=x^2-36$

The degree of the function $h(x)$ is 2 as the exponent of leading term $x^2$ is 2. Thus its a quadratic equation.

For any quadratic equation the domain is set of all real numbers.

So Domain of $h(x)$ is (-∞,∞)

7 0

3 years ago

You need to buy tissue paper sheets to cushion gifts being placed inside a box. The box is 12 inches wide by 16 inches long. The

Kay [80]

Answer:

Area of tissue paper is 384 square inches.

Step-by-step explanation:

Given:

Length of box = 16 inches.

Width of the box = 12 inches.

We need to find find the area of the tissue paper.

But It is given that the area of the tissue paper sheet is based on twice the length times the width of the box.

Hence Framing in equation form we get;

Area of tissue paper = $2(length\ of \ box \times width \ of \ box)$

Hence Substituting the given values we get;

Area of tissue paper = $2(12\times 16) = 2\times 192 = 384 in^2$

Hence Area of tissue paper is 384 square inches.

7 0

3 years ago