All categories

2 years ago

Which of the following is the equation of a direct variation that has a constant of variation equal to - 1/2?

Mathematics

1 answer:

Sliva [168]2 years ago

3 0

The answer of the question is c

You might be interested in

If 3x+y = 7, what is the value of x/y? SOMEONE HELP I NEED IT QUICK!! plsss

andrey2020 [161]

Answer:

x=2 y=1

Step-by-step explanation:

3 times 2 =6

plus 1 = 7

8 0

2 years ago

CAN SOMEONE HELP ME ASAP???? Find the gradient of the line 2y = -10x + 1

Mice21 [21]

Answer:

Gradient = -5

Step-by-step explanation:

The gradient of a line is the slope of the line.

The standard form of the line equation is y = mx + b

where m is the slope ( or gradient) b is the y - intercept.

Given :

2y = -10x + 1

$y = -\frac{10}{2} x + \frac{1}{2}\\\\y = -5x + \frac{1}{2}\\\\Therefore , \ gradient \ is \ -5$

4 0

2 years ago

Read 2 more answers

How to solve to system y=x^2-2 y=2x+1

vovikov84 [41]

Answer:

the solutions are (3, 7) and (-1, -1)

Step-by-step explanation:

Insert the " = " symbol between the two equations, obtaining:

y = x^2 - 2 = y = 2x + 1

Then x^2 - 2 = 2x + 1, or

x^2 - 2x - 3 = 0, and this can be factored into (x - 3)(x + 1) = 0.

Thus, the x values that satisfy this system are {-1, 3}.

Use y = 2x + 1 to find the corresponding y values:

y = 2(-1) + 1 = -1

and

y = 2(3) + 1 = 7

Then the solutions are (3, 7) and (-1, -1)

7 0

3 years ago

Find the work done by force dield f(x,y)=x^2i+ye^xj on a particle that moves along parabola x=y^2+1 from(1,0) to (2,1)

NemiM [27]

Call the parabola $P$ , parameterized by $\mathbf r(y)=\langle y^2+1,y\rangle$ with $0\le y\le 1\rangle$ . Then the work done by $\mathbf f(x,y)$ along $P$ is

$\displaystyle\int_P\mathbf f(x,y)\cdot\mathrm d\mathbf r=\int_{y=0}^{y=1}\mathbf f(x(y),y)\cdot\dfrac{\mathrm d\mathbf r(y)}{\mathrm dy}\,\mathrm dy$
$=\displaystyle\int_0^1\langle(y^2+1)^2,ye^{y^2+1}\rangle\cdot\langle2y,1\rangle\,\mathrm dy$
$=\displaystyle\int_0^1(2y^5+4y^3+2y+ye^{y^2+1})\,\mathrm dy=\frac73-\frac e2+\frac{e^2}2$

8 0

3 years ago

Which of the following are irrational numbers? 3.14 √ 5 0.3333 √ -4 1/9

Galina-37 [17]

Answer:

√ -4

Step-by-step explanation:

all square roots of negative numbers are irrational

6 0

3 years ago