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2 years ago

Which of the following value of x make this equation true? 2x + 3 = 11 x = x = 3 x = 4 x = 8

Mathematics

1 answer:

AlekseyPX2 years ago

8 0

Answer:

x = 4

Step-by-step explanation:

1) Substitute the given x values, by substitution you replace x with the numbers provided. We do this because since the numbers are already given you are to find the correct value of y.

2) Plug in the numbers provided.

Start with x = 3

2(3) + 3 = 11

2 * 3 = 6

6 + 3 = 9

x = 3 is not a correct choice

2) Use the second option and determine if the second option is correct.

x = 4

2(4) + 3 = 11

4 * 2 = 8 + 3 = 11

This option is correct because the value of x makes the equation true.

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2 years ago

Ricardo lost 6 golf balls while playing yesterday he bought a box of twelve golf balls and lost 4 on the course today he now has

umka2103 [35]

16 balls.

Let's call x the total number of golf balls that Ricardo had before he lost the first 6 balls. (x - 6).
Then he bought 12 more and lost 4 so basically 12 - 4 = 8
Add that to the equation: (x-6) + 8
And now that he has 18 golf balls at end of the second day the total must add to 18.

Full equation: (x-6) + 8 = 18

(x-6) + 8 = 18
(x-6) = 18 - 8 <-- Transpose
(x-6) = 10
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3 years ago

Help please im marking brainliest

Strike441 [17]

The surface area of the triangular prism is of 140 cm².

<h3>What is the surface area of a prism?</h3>

It is the sum of the areas of all faces of a prism. In this problem, the prism has these following faces:

One rectangle of dimensions 8 cm and 6 + 4 + 5 = 15 cm.

Two right triangles with sides 4 cm and 5 cm.

For a rectangle, the area is given by the multiplication of the dimensions, hence:

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Then the surface area of the prism is:

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1 year ago

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kvasek [131]

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2 years ago

Read 2 more answers

What are the coordinates of the hole in the graph of the function f(x) ?

Vinvika [58]

ANSWER

$(3, \infty )$

EXPLANATION

The given function is

$f(x) = \frac{ {x}^{2} - 9}{x - 3}$

When we plug in x=3 into this function, we obtain,

$f(3) = \frac{0}{0}$

This means that the function is discontinuous at x=3.

We need to simplify the function to obtain,

$f(x) = \frac{(x - 3)(x + 3)}{(x - 3)}$

This implies that,

$f(x) = x + 3$

The graph this function is a straight line that is continuous everywhere.

To graph

$f(x) = \frac{ {x}^{2} - 9}{x - 3}$
we draw the graph of

$f(x) = x + 3$
and leave a hole at x=3.

See diagram in attachment.

Hence the coordinates of hole is

$(3, \infty )$

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2 years ago