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dedylja [7]
3 years ago
7

What is the value of x? x+15=2x-40

Mathematics
2 answers:
IrinaVladis [17]3 years ago
7 0

Answer:

55 =x

Step-by-step explanation:

x+15=2x-40

Subtract x from each side

x-x+15=2x-x-40

15 = x-40

Add 40 to each side

15+40 = x-40+40

55 =x

andreev551 [17]3 years ago
4 0

Answer:

x = 55

Step-by-step explanation:

x+15=2x-40

take away x from both sides and add 40 on both sides to get the like terms on each side

55 = x

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the slope-intercept form of an equation of the line perpendicular to the graph of x – 3y = 5 and passing through (0, 6).
Leona [35]

Answer:

y = - 3x + 6

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Rearrange x - 3y = 5 into this form

Subtract x from both sides

- 3y = - x + 5 ( divide all terms by - 3 )

y = \frac{1}{3} x - \frac{5}{3}  ← in slope- intercept form

with slope m = \frac{1}{3}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{1}{3} } = - 3

Note the line crosses the y- axis at (0, 6) ⇒ c = 6

y = - 3x + 6 ← equation of perpendicular line

3 0
4 years ago
Find the slope of the graph of the equation at the given point. (If an answer is undefined, enter UNDEFINED.)
juin [17]

Answer:

Undefined.

Step-by-step explanation:

We want to find the slope of the graph of the equation:

\displaystyle x^2 - y^2 = 81

At the point (9, 0).

In other words, we want to evaluate dy/dx when <em>x</em> = 9 and <em>y</em> = 0.

Find dy/dx. We can take the derivative of both sides with respect to <em>x: </em>

\displaystyle \begin{aligned} \frac{d}{dx}\left[ x^2 - y^2\right] = \frac{d}{dx}\left [ 81\right] \\ \\ 2x - 2y \frac{dy}{dx} &= 0 \\ \\ \frac{dy}{dx} = \frac{x}{y}\end{aligned}

Then the slope of the graph at the point (9, 0) will be:

\displaystyle \begin{aligned} \frac{dy}{dx}\Big|_{(9, 0)} &= \frac{(9)}{(0)} \\ \\ &= \text{Und.}\end{aligned}

In conclusion, the slope of the graph at the point (9, 0) is undefined.

7 0
3 years ago
What is the description of one-hundredth of 36?
mafiozo [28]

One – hundredth is fraction that can also be written in decimal form. The fraction form is 1/00, while the decimal form is 0.01. so the description of the one hundredth of 36 can be solved by multiplying it by 0.01

<span>36 x 0.01 = 0.36</span>

4 0
3 years ago
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Given that x = 7.4 m and θ = 31°, work out BC rounded to 3 SF<br>I NEED THIS ANSWER NOW​
Len [333]

Answer:

59.0

Step-by-step explanation:

c=31

b=90

90+31=121

180-121=59

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please mark as brainliest if correct

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5 0
3 years ago
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Write the slope-intercept equation
satela [25.4K]

Answer:

ok so I think it's -3:3

Step-by-step explanation:

hopefully thats right

8 0
3 years ago
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