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Furkat [3]
3 years ago
9

Solve for x 5x+15=40

Mathematics
2 answers:
Olegator [25]3 years ago
5 0

Answer:

\displaystyle x=5

Step-by-step explanation:

5x+15=40

Subtract 15 on both sides of the equation.

5x+15-15=40-15

5x=40-15

5x=25

Divide 5 into both sides of the equation.

\displaystyle \frac{5x}{5} =\frac{25}{5}

\displaystyle x=5

Nezavi [6.7K]3 years ago
4 0

Answer: x=5

Step-by-step explanation:

5x+15=40\\

subtract 15 on both sides

5x=25

divide 5 on both sides

x=5

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Using polygon STUVW what is m angle U ?
bija089 [108]

Answer:

The m∠ U is 72°.

Step-by-step explanation:

Given:

\angle S = 90\\\angle T = 2x\\\angle U = x\\\angle V = 2x\\\angle W = 90\\

To find :

\angle U = x = ?

Solution:

The sum of the measures of the interior angles of a polygon with 'n' sides is given as

\textrm{sum of the measures of angle of a polygon with 'n' sides} = (n - 1)\times 180

Here we have n = 5 on substituting the values we get

\angle S +\angle T + \angle U +\angle V + \angle W = (5 -2)\times 180\\90 + 2x + x + 2x + 90 = 3\times 180\\5x + 180 = 540\\5x = 540-180\\5x = 360\\x = \frac{360}{5}\\x = 72

Therefore,

m∠ U is 72°.

4 0
3 years ago
Which of the following represents a combination? Select all that apply.
Svetradugi [14.3K]

Answer:

Combinations:

A committee consisting of three members with the same role

Selecting two sandwiches from a menu of 10

Step-by-step explanation:

A combination is a selection of items from a collection, such that the order of selection does not matter.

A permutation is a selection of items from a collection, such that the order of selection matters.

A. The PIN for a bank or credit card - order matters → permutation

B. A committee consisting of three members with the same role - order does not matter → combination

C. A committee consisting of a president, vice president, and secretary - order matters → permutation

D. Final standings in a professional sports league - order matters → permutation

E. Selecting two sandwiches from a menu of 10 - order does not matter → combination

3 0
3 years ago
The domain of f(x) is the set of all real values except 7, and the domain of g(x) is the set of all real values except -3. Which
Maurinko [17]

Answer:

The option is: <em>all real values except x = 7 and the x for which f(x) = -3</em>

Step-by-step explanation:

As the domain of f(x) is the set of all real values except 7. So it can be written as follows:

              Domain of f(x) = { x ∈ R | x ≠ 7}

As the domain of g(x) is the set of all real values except -3. So it can be written as follows:

              Domain of g(x) = { x ∈ R | x ≠ -3}

It is a common rule that the domain of a composite function (gºf)(x) will be the set of those input x in the domain of f for which f(x) is in the domain of g.

So, the option is: <em>all real values except x = 7 and the x for which f(x) = -3</em>

Keywords:  domain, composite function

Learn more domain and composite functions from brainly.com/question/2073574

#LearnwithBrainly

3 0
3 years ago
Y=f(x)=(4)^x find f(x) when x=-1
nexus9112 [7]

when x = -14

f(-1) = 4^-1 = 1 / 4^1 = 1/4

Answer

1/4 or 0.25

4 0
3 years ago
Read 2 more answers
What is the slope of the line given by the following equation? Give an exact number.  -13x 5y=-7
Black_prince [1.1K]
The slope should be 13/5x
8 0
3 years ago
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