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MakcuM [25]
3 years ago
15

In a group of​ bird-watchers, 4 out of every 5 people have seen a bald eagle. What percent of the​ bird-watchers have not seen a

bald​ eagle
Mathematics
1 answer:
Andreas93 [3]3 years ago
4 0

Answer:

20%

Step-by-step explanation:

4/5=.80

1-.80=.20

.20=20%

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1/2(8a+200b)<br><br> Is the answer 4a+100b?
kaheart [24]

Answer:

you are correct it is, 4a+100b

Step-by-step explanation:

4 0
2 years ago
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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
Trials in an experiment with a polygraph include 96 results that include 22 cases of wrong results and 74 cases of correct resul
german
Yeh soo the answer should be D
8 0
3 years ago
HELP.
wolverine [178]

Answer:

x=8

Step-by-step explanation:

5 0
3 years ago
I need help finding y
kolezko [41]

to solve for y, we must multiply by t on both side to get ride of the t in the denominator. By doing this, we will get:

{t}^{3}

on the right side.

Subtracting 3, and we have successfully isolated y.

It would be impossible to get a quantitative value for y if we don't know the value of t.

4 0
3 years ago
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