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Alexandra [31]
3 years ago
11

X+10=2x-4 what does x=

Mathematics
2 answers:
irinina [24]3 years ago
5 0

Answer:

x = 14

Step-by-step explanation:

x + 10 = 2x - 4

x + 10 - 10 = 2x - 4 - 10

x = 2x - 14

x - 2x = 2x - 2x - 14

- x = - 14

- x ÷ - 1 = - 14 ÷ - 1

x = 14

kobusy [5.1K]3 years ago
4 0
X=14

Step by Step

x+10=2x-4
-x. -x

10=x-4
+4. +4

x=14
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The correct ordered pair 2y + 4x equals 18 2y - 3x equals 4
Julli [10]

Answer:

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Step-by-step explanation:

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4 years ago
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If f(x) varies directly with x and f(x) = 40 when x = 8, find the value of f(x) when x = 2.
Mars2501 [29]

For this case we have a direct variation of the form:

f (x) = kx

Where "k" is the constant of proportionality. To find it, we use the following data:

f (x) = 40\ and\ x = 8

Substituting:

40 = k * 8

Clearing the value of k:

k = \frac {40} {8}\\k = 5

Thus, the direct variation is given by:

f (x) = 5x

Forx = 2 we have:

f (2) = 5 * 2\\f (2) = 10

Answer:

The value of the direct variation for x = 2is: f (2) = 10


7 0
3 years ago
2 Select the correct answer. What is the inverse of function ? F(x)=10/9x+11 A.f-1(x)=9x-99/10 B.f-1(x)=9/10x+11 C.f-1(x)=9x+11/
Lilit [14]

Consider f(x)=y.

\begin{gathered} f(x)=y \\ x=f^{-1}(y) \end{gathered}

Simplify the equation f(x)=y to obtain the value of x in terms of y.

\begin{gathered} f(x)=y \\ \frac{10}{9}x+11=y \\ \frac{10}{9}x=y-11 \\ 10x=9y-99 \\ x=\frac{9y-99}{10} \end{gathered}

So inverse of function is,

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Correct nswer is A part.

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1 year ago
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Alisiya [41]

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3 years ago
Given an equation: y=3x-2, write an equation of a parallel line that includes the point (1,5)
Nuetrik [128]

Answer:

y = 3x + 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

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y = 3x - 2 ← is in slope- intercept form

with slope m = 3

Parallel lines have equal slopes , then

y = 3x + c ← is the partial equation

To find c substitute (1, 5 ) into the partial equation

5 = 3 + c ⇒ c = 5 - 3 = 2

y = 3x + 2 ← equation of parallel line

7 0
3 years ago
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