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Gelneren [198K]
3 years ago
10

Find the value of x (really need help with this)

Mathematics
1 answer:
qwelly [4]3 years ago
4 0

Answer:

x=-7

Step-by-step explanation:

The sum of the angles of a triangle are 180 degrees

40 + x+57 + 90 =180

Combine like terms

187 +x = 180

Subtract 187 from each side

187-187 +x = 180-187

x = -7

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5. Select All equations that have a solution of 2"
Pachacha [2.7K]

Answer:

none of these have a solution of 2.

Step-by-step explanation:

4x+ 15 = 27

x=3

x + 6 =3

x = 3

2(x+5)=18

x = 4

x + 9 = 6

x = -3

if my understanding of what the equations are supposed to be please let me know what they are supposed to be, because with the way they are typed it is hard to tell :)

6 0
3 years ago
If you travel 1000 feet in 5 minutes, what is your speed in feet per minute?
Ilia_Sergeevich [38]

Answer:

200 feet per minute

Step-by-step explanation:

1000 / 5 gives us the feet per minute

200 feet per minute

Answer:  200 feet per minute

4 0
3 years ago
Describe a scenario where the function value exists at x=c, but the limit does not exist.
Vikki [24]

The scenario can be described using a piecewise function like:

f(x) = 1/x                  if  x < c.

f(x) = x                    if   x = c

f(x) = 1/(x + 73)       if x > c.

<h3>When the value exists but the limit does not?</h3>

Remember that the limit only exists if the limit from left and the limit from the right give the same value.

Then, we can just define a piecewise function of the form:

f(x) = 1/x                  if  x < c.

f(x) = x                    if   x = c

f(x) = 1/(x + 73)       if x > c.

Clearly, this is not a continuous function.

Notice that:

f(c) = c.\\\\ \lim_{x \to c^{-}} f(x) = 1/c\\\\ \lim_{x \to c^{+}} f(x) = 1/(c + 73)

So the limits from left and right are different, then:

\lim_{x \to c^{}} f(x)

Does not exist.

If you want to learn more about limits:

brainly.com/question/5313449

#SPJ1

6 0
2 years ago
Use substitution to solve the system of linear equations. In your final answer, include all of your work. y = -3x + 4 and x + 1/
FrozenT [24]

Answer:

y = -3x +4

Step-by-step explanation:

Using the expression for y, we can substitute that into the second equation:

... x + (1/3)(-3x +4) = 4/3

... 4/3 = 4/3 . . . . . simplify (True for any value of x.)

<em>These equations are dependent and have an infinite number of solutions</em>.

8 0
3 years ago
Read 2 more answers
Write 16t^1/5 in radical form​
nignag [31]

\bf ~\hspace{7em}\textit{rational exponents} \\\\ a^{\frac{ n}{ m}} \implies \sqrt[ m]{a^ n} ~\hspace{10em} a^{-\frac{ n}{ m}} \implies \cfrac{1}{a^{\frac{ n}{ m}}} \implies \cfrac{1}{\sqrt[ m]{a^ n}} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ 16t^{\frac{1}{5}}\implies 16\sqrt[5]{t^1}\implies 16\sqrt[5]{t}

7 0
3 years ago
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