All categories

3 years ago

TIME REMAINING

Mathematics

1 answer:

marta [7]3 years ago

8 0

the answer of this question is (-2,2)

You might be interested in

Find Slope please;( I really need help

Alik [6]

Answer:

number two

Step-by-step explanation:

3 0

3 years ago

What is the equivalent ratio of 9 to 12?

liraira [26]

Answer:

3:4

Step-by-step explanation:

divide 9 by 3 and 12 by 3

7 0

4 years ago

Read 2 more answers

Ana deposits $1,500 in a savings account that earns 4% interest annually. Which of the following equations models the amount of

Naddika [18.5K]

Answer:

B is the correct answer A=1500(1.04)^5

5 0

3 years ago

Read 2 more answers

Find the sum: 4+(-11)

Elden [556K]

Answer:

-7

Step-by-step explanation:

4 + (-11)

=> {since, positive x negative = negative}

=> 4 - 11

=> -7

3 0

2 years ago

Read 2 more answers

Find the equation of the tangent of x^2- xy + y^2 =7 at (-1, 2)

Citrus2011 [14]

Answer:

It is 3y = 4x + 10

Step-by-step explanation:

Let's first get the slope of the curve.

[ slope is the derivative of the equation ]

${x}^{2} - xy + {y}^{2} = 7$

introduce dy/dx :

$\frac{d}{dx} ( {x}^{2} - xy + {y}^{2} ) = \frac{d}{dx} (7) \\ \\ 2x - (y + \frac{dy}{dx} ) + 2y \frac{dy}{dx} = 0$

make dy/dx the subject:

$2x - y - \frac{dy}{dx} + 2y \frac{dy}{dx} = 0 \\ \\ 2y \frac{dy}{dx} - \frac{dy}{dx} = y - 2x \\ \\ \frac{dy}{dx} (2y - 1) = y - 2x \\ \\ \frac{dy}{dx} = \frac{y - 2x}{2y - 1}$

At point (-1, 2):

$\frac{dy}{dx} = \frac{2 - 2( - 1)}{2(2) - 1} \\ \\ slope = \frac{4}{3}$

but a tangent has the same slope as the curve:

$y = mx + c$

m is the slope

c is the y-intercept

At (-1, 2):

$2 = ( - 1 \times \frac{4}{3} ) + c \\ \\ c = 2 + \frac{4}{3} \\ \\ c = \frac{10}{3}$

equation:

$y = \frac{4}{3} x + \frac{10}{3} \\ \\ { \boxed{3y = 4x + 10}}$

8 0

3 years ago

Read 2 more answers