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4 years ago

A quadratic equation set equal to zero that has a double root. Explain what this means and describe the quadratic.

Mathematics

1 answer:

uysha [10]4 years ago

3 0

Answer:

Step-by-step explanation:

A double root occurs when the discriminant of a quadratic function is 0. The two resulting roots are real. The graph of the parabola touches the x-axis in just one place.

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Geometry please answer

nika2105 [10]

Answer: 8

Step-by-step explanation:

$\frac{180(n-2)}{n}=135\\180(n-2)=135n\\180n-360=135n\\-360=-45n\\n=\boxed{8}$

3 0

2 years ago

For the funtion f(x)= (x+7)^5, Find f^-1 (x)

quester [9]

Answer:

The inverse of function $f(x)= (x+7)^5$ is $\mathbf{f^{-1} (x)=\sqrt[5]{x}+7}$

Option A is correct option.

Step-by-step explanation:

For the function $f(x)= (x+7)^5$ , Find $f^{-1} (x)$

For finding inverse of x,

First let:

$y=(x+7)^5$

Now replace x with y and y with x

$x=(y+7)^5$

Now, solve for y

Taking 5th square root on both sides

$\sqrt[5]{x}=\sqrt[5]{(y+7)^5}\\\sqrt[5]{x}=y+7\\=> y+7=\sqrt[5]{x}\\y=\sqrt[5]{x}-7$

Now, replace y with $f^{-1} (x)$

$f^{-1} (x)=\sqrt[5]{x}+7$

So, the inverse of function $f(x)= (x+7)^5$ is $\mathbf{f^{-1} (x)=\sqrt[5]{x}+7}$

Option A is correct option.

6 0

3 years ago

500g out of 8kg in percentage

Crank

Answer:

this is the answer and the work btw I just took a screenshot this I have way better handwriting

3 0

3 years ago

HELP ME ASAP I HAVE SO MANY QUESTIONS THAT WILL SAY THIS BUT HELP MEEE!!!(timed!!)

tester [92]

Answer:

1. $8.30

Step-by-step explanation:

so 3 hats were purchased and each cost 15.50 so

15.50*3=46.50

and the rest of the 96.30 is 6 keychains so

96.30-46.50=49.80

and there is 6 keychains

49.80/6=8.30

Each key chain was $8.30

Claire's answer is unreasonable because when we got the price of the keychains all together in Claire's mind the total for the keychains would be $4.98, which we clearly got the total for the keychains at $49.80.

8 0

3 years ago

Read 2 more answers

In a relay race, the probability of the galaxy team winning is 22%. in another unrelated relay race, the probability of the kome

lina2011 [118]

We know that
the probability of the Galaxy team winning is 22%------> 0.22
the probability of the Galaxy team losing is 100%-22%----> 78%-----> 0.78

the probability of the Komets team winning is 47%------> 0.47
the probability of the Komets team losing is 100%-47%----> 53%-----> 0.53

therefore
the probability of the comets losing their race and the galaxy winning theirs is
0.53*0.22=0.1166------> 11.66%

the answer is
11.66%

4 0

3 years ago