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mr_godi [17]
4 years ago
14

What does x equal in 3x + 5 = -7

Mathematics
1 answer:
Stolb23 [73]4 years ago
6 0

Answer:-4

Step-by-step explanation:

Subtract 5 from each side, which leaves you with 3x=-12. Then divide each side by 3. Then that leaves you with x=-4

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Divide using a common factor of 3 to find an equivalent fraction for
fgiga [73]
3/12 = (3÷3)/(12÷3) = 1/4
4 0
3 years ago
What is the domain of f(x) = 2^x?
hammer [34]

The given function has no undefined points nor domain constraint. Thus, the domain is: -\infty \: < x < \infty.

<h3>Domain and Range</h3>

The domain of a function is the set of input values for which the function is real and defined. In the other words, when you define the domain, you are indicating for which values x the function is real and defined. An example, there is a restriction for the domain of fractions. The variable x in the denominator should be different of zero.

While the domain is related to the values ​​of x, the range is related to the possible values ​​of y that the function can have.

In this question, the function 2^x has no undefined points nor domain constraint. Therefore, the domain is: -\infty \: < x < \infty

Learn more about  the domain here:

brainly.com/question/10197594

#SPJ1  

3 0
2 years ago
Donatello starts with a marble cube of side length $10.$ He then slices a pyramid off each corner, so that in the resulting poly
prohojiy [21]

Answer:

The length of each side of the polyhedron, s is 4.142 or

= 10(\sqrt{2}-1)

Step-by-step explanation:

If we take the distance of the length of the side of the cube where Donatello make the cut to the corner of the cube as x we get the side of length each polyhedron as

\sqrt{x^2 + x^2} = \sqrt{2x^2} =x\sqrt{2}

x·√2 because we have an hy

Therefore, the original cube had sides of length

10 = 2·x + x·√2

Solving for x we get

x = \frac{10}{\sqrt{2}+2 }

Therefore the length of s is x·√2 which gives

s = x\sqrt{2}  = \frac{10}{\sqrt{2}+2 }\sqrt{2} = 10\sqrt{2} -10 = 10(\sqrt{2}-1) = 4.142

The length of each side of the polyhedron, s = 4.142.

3 0
4 years ago
5 x(4 - 83 ÷ 1 x 9)+ 3+8
nekit [7.7K]

The answer is..........

-3704

7 0
3 years ago
Read 2 more answers
Plz help with graph polynomial
djverab [1.8K]

Answer:

(x + 1 ) is a factor

Step-by-step explanation:

Given a polynomial with roots x = a, x = b , then the corresponding factors are

(x - a) and (x - b)

From the graph

The roots are x = - 1 and x = 4 , thus factors are

(x - (- 1)) and (x - 4) , that is

(x + 1) and (x - 4)

(x + 1) is the required factor

7 0
3 years ago
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