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4 years ago

Jacks cow is tied to a beanstalk with a rope 15 ft long what is the area of the circle in which the cow can graze

1 answer:

6 0

The beanstalk is the center of the circle, meaning that the rope is the radius.
We use the equation:
A= $\pi r^2$
A= $\pi *225$
A= 706.86

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How do you solve substitution to solve the sytem x+y=2 -2x+y=2

lord [1]

So you want to make one of the equations equal to one of the placeholders exg y=x+3

so we have
x+y=2 and
-2x+y=2

I chose to make -2x+y=2 equal to y so
-2x+y=2
add 2x to both sides
y=2+2x

subsitute 2+2x for y in x+y=2
x+2+2x=2
add like terms
3x+2=2
subtract 2 from both sides
3x=0
x=0

subsitute x=0 in x+y=2
0+y=2
y=2

x=0
y=2

5 0

3 years ago

Read 2 more answers

(x+5)(x-5) Multiplying special case polynomials

azamat

Answer:

x^2 - 25 ✔

Step-by-step explanation:

(x+5)(x-5)

x(x-5) +5(x-5)

x^2 - 5x + 5x - 25

x^2 - 25

7 0

4 years ago

What is 8 inches converted to feet? Write your answer as a fraction in simplest form

Nata [24]

Answer: 2/3 feet

Step-by-step explanation:

Since there are 12 inches in a foot, 8 inches would be equal to 8/12 of a foot. We can divide the numerator and the denominator by 4.

8/12 = 2/3 feet

7 0

2 years ago

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Craig wants to use an elevator to carry identical packages having the same weight each package weighs 4 pounds and Craig weighs

julsineya [31]

Answer:

He can carry 60 packages

3 0

3 years ago

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Find the Derivative y’ implicitly.

Brums [2.3K]

$e^{x^2y} - e^y = e^y(e^{x^2} - 1) = x$

We should ISOLATE x

$e^y= \frac{x}{e^{x^2} - 1}$

Find the Natural Log of Both Sides to Make the Left Side "y"

$y = ln(\frac{x}{e^{x^2}-1})$

Now, FIND THE DERIVATIVE Using Chain Rule!!!

$y' = \frac{1}{\frac{x}{e^{x^2}-1}} * \frac{(1(e^{x^2}-1) - x(2x*e^{x^2})}{(e^{x^2}-1)^2}= {\frac{e^{x^2}-1}{x}}* \frac{(1(e^{x^2}-1) - x(2x*e^{x^2})}{(e^{x^2}-1)^2} = {\frac{1}{x}}* \frac{(1(e^{x^2}-1) - x(2x*e^{x^2})}{(e^{x^2}-1)} = {\frac{1}{x}}* \frac{(e^{x^2}-1 - 2x^2e^{x^2})}{(e^{x^2}-1)}$

3 0

3 years ago