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cupoosta [38]
3 years ago
6

X - (7) = 13 help please

Mathematics
2 answers:
Bond [772]3 years ago
7 0

Answer:

x=20

Step-by-step explanation:

inverse operation

add 7 to both sides

x=20

frutty [35]3 years ago
5 0

Answer: x=20

Step-by-step explanation:  x-20 = 0  

 Add  20  to both sides of the equation :  

                     x = 20

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M = -7 and it passes through the point (0,4)
Alla [95]

Answer:

Y = -7x + 4

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
If xy + y² = 6, then the value of dy/dx at x= -1 is<br>​
mylen [45]

Hi there!

\large\boxed{\text{At (-1, -2), }\frac{dy}{dx} = -\frac{2}{5}}}

\large\boxed{\text{At (-1, 3), }\frac{dy}{dx} = -\frac{3}{5}}}

We can calculate dy/dx using implicit differentiation:

xy + y² = 6

Differentiate both sides. Remember to use the Product Rule for the "xy" term:

(1)y + x(dy/dx)  + 2y(dy/dx) = 0

Move y to the opposite side:

x(dy/dx) + 2y(dy/dx) = -y

Factor out dy/dx:

dy/dx(x + 2y) = -y

Divide both sides by x + 2y:

dy/dx = -y/x + 2y

We need both x and y to find dy/dx, so plug in the given value of x into the original equation:

-1(y) + y² = 6

-y + y² = 6

y² - y - 6 = 0

(y - 3)(y + 2) = 0

Thus, y = -2 and 3.

We can calculate dy/dx at each point:

At y = -2: dy/dx = -(-2) / -1+ 2(-2) = -2/5.

At y = 3: dy/dx = -(3) / -1 + 2(3) = -3/5.

5 0
3 years ago
Brainlyst if u are right
Fudgin [204]

Answer:

<h3>              D. (2, 7)</h3>

Step-by-step explanation:

The solution is the coordinates of the point (p,n) of intercept of lines described by given equations.

7 0
2 years ago
Is a positive integer raised to a negative power always positive
Evgesh-ka [11]

Answer:

Yes

Step-by-step explanation:

Many students gets confused with these exponential problems, they often get misguided but understand that there is nothing to be confused of.

When you have a negative number, you just take the reciprocal of the whole exponent number.

What is a reciprocal?

Let's take an integer for example, let's take the number 3.

The reciprocal for 3 is (1/3)

Let's take an other number, let's take 2/3

The reciprocal for 2/3 is (3/2)

In conclusion, we just reverse the denominator and the numerator or just switch it.

We take 3 as (3/1) and that is the reason, the reciprocal would be (1/3)

Now, coming to the negative integers. Taking an example:

(2)⁻¹

This would be become (1/2¹) = (1/2)

Hence, the result of a negative integer is positive but would be a fraction.

Hope I helped!


3 0
3 years ago
6. Sales associates at a local clothing
RSB [31]

Answer:

ask the internet this question sorry not being rude its becausd no ones answered it

6 0
3 years ago
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