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3 years ago

How do you answer the equation -4r+11=4(1-r)+7?

Mathematics

1 answer:

kow [346]3 years ago

3 0

Answer:

Any value of

makes the equation true.

All real numbers

Interval Notation:

(-Any value of

makes the equation true.

All real numbers

Interval Notation:

( ∞ ,∞ )

Step-by-step explanation:

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Answer the questions to determine if events N and V independent. Round your answers to the nearest hundredth. P(N|V) = P(N) = Ar

Over [174]

Answer:P(N|V) = 0.62

P(N)=0.59

Not independent

Step-by-step explanation:

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3 years ago

Ann took a taxi home from the airport. The taxi fare was

Zinaida [17]

Answer:

She would have traveled 21 miles, because it you multiply 2.1 by 21 you get 44.1 and then Ann gave a $5 tip so that would bring it up to $49.10.

Step-by-step explanation:

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3 years ago

meteroloogist track severe stoms using Doppler radar. A polar grid is used to measure distances as the storms progress. If the c

FinnZ [79.3K]

Answer:

$(x-h)^2+(y-k)^2= (r+ 40 )^2$

Step-by-step explanation:

It is given that a meteorologist is using a Doppler radar to find out the distance of the storm as it passes using a polar grid.

The origin of the radar screen is its center.

And the distance between each ring is 10 miles from the center.

So let :

r = radius

h and k = be the coordinates of the center.

So the equation of a circle is :

$(x-h)^2+(y-k)^2= r^2$

Now the equation of the fourth circle when the radius changes by 10 miles is :

$(x-h)^2+(y-k)^2= (r+ 40 )^2$

5 0

3 years ago

Log3 (x squared + 7x + 21) = 2

Nezavi [6.7K]

Step-by-step explanation:

log <base a> b = x

means

a^x = b

3^2 = x^2+7x+21

x^2 + 7x + 21 - 9 = 0

x^2 + 7x + 12 = 0

(x+3)(x+4)

x = -3 or -4

3 0

3 years ago

Can anyone help me<br> Please and thankyou? Been struggling for 20minutes

schepotkina [342]

There is an app that will help for these types of questions called, "Showmath."

5 0

3 years ago

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