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3 years ago

Solve for x. 2x = 15 + x A: x = -15 B: x = 15 C: x = -15/2 D: x = 15/2

1 answer:

3 0

2x = 15 + x

First, our goal is to get 'x' to equal something by itself. To do so, we will have to do everything on one side. Let's subtract 'x' from each sides.
$2x - x = 15$

Second, our next step is to subtract '2x - x'. Since 'x' is basically considered (1), it will equal 'x'.
$x = 15$

Answer: $\fbox { x = 15 }$

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How do I find the y intercept in a fraction

Furkat [3]

ANSWER:

Both functions have the same slope

The linear equation does not have a y-intercept

The table and the grahp express an equivalent function

STEP-BY-STEP EXPLANATION:

In order to compare, we must calculate the slope of the table, knowing that the equation in its slope and intercept form is the following:

$\begin{gathered} y=mx+b \\ \text{where m is the slope and b is y-intercept} \end{gathered}$

The formula to calculate the slope is the following:

$m=\frac{y_2-y_1}{x_2-x_1}$

The points are (-6, -9/2) and (4,3), replacing:

$m=\frac{3-(-\frac{9}{2})}{4-(-6)}=\frac{3+\frac{9}{2}}{4+6}=\frac{\frac{15}{2}}{10}=\frac{15}{20}=\frac{3}{4}$

The slope is 3/4

Now, for b

x = 4

y = 3

m = 3/4

replacing:

$\begin{gathered} 3=\frac{3}{4}\cdot4+b \\ b=3-3 \\ b=0 \end{gathered}$

The equation is:

$y=\frac{3}{4}x$

Therefore, the true statements are:

• Both functions have the same slope

• The linear equation does not have a y-intercept

• The table and the grahp express an equivalent function

8 0

9 months ago

You are given f(0) = 1 and g(0) = -2 and g(1) = 3. What is g ∘ f ( 0 ) equal to?

Sergeu [11.5K]

Answer:

g∘f (0) = 1

Explanation:

The composition of the functions f and g represented by g ∘ f ( 0 ) means that g is applied to f(0), i.e f(0) is the input to the function g.

Since f(0) = 1, you are going fo find g(1):

$$ g\circ f(x)=g(f(x)) $\\\\$ g\circ f(0)=g(f(0)) $\\\\$ g\circ f(0)=g(1) $=3$

4 0

3 years ago

hey these are my grades and this weekend is the end of the school year I just need advice on getting my grades up

scZoUnD [109]

Answer:

i dont know much just do ur work correctly

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Show work ASAP!! Please

zepelin [54]

9514 1404 393

Answer:

a) x = -1, x = 4

b) y = x^2 -3x -4

Step-by-step explanation:

a) We observe the x-intercepts are x = -1 and x = 4. These are the solutions to y = 0, which is usually what we want in cases like this.

The solutions are x=-1 and x=4.

b) We know two of the factors are (x +1) and (x -4). There may be an additional constant factor for vertical scaling. One point we can check is the y-intercept.

y = a(x +1)(x -4)

For x=0, this is ...

y = a(1)(-4) = -4a

The y-intercept is y = -4, so we have a=1.

The factored equation is ...

y = (x +1)(x -4)

Multiplying this out gives the equation in standard form:

y = x^2 -3x -4

Additional comment

Your teacher may want the standard form equation to be ...

x^2 -3x -4 = 0

This is the equation of two specific points: x=-1 and x=4. It is not the equation of the graph.

8 0

3 years ago

You walk at a speed of 1.429m/s. How far could you walk in 10 MINUTES? Show your work!

arsen [322]

Answer:

Well the answer is 857.4 meters per minute

Step-by-step explanation:

The reason is because 1.429 times 60= 85.74 That means that you walk 85.74 meters per second. Then that times 10 is 857.4 . Can I get brainliest

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3 years ago