2 years ago

If 2^x-4=4a^x-6 what is the value of a

1 answer:

4 0

a^x−6=2^x−4/4........ hope this answer helps

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Oshua's mother has a family Christmas gathering at 2:00. Joshua must travel 348 miles to join the festivities. He left his house

gavmur [86]

Answer:

58 miles/hour

Step-by-step explanation:

Given that the family Christmas gathering has been scheduled at 2:00 p.m.,

and Joshua left the house at 8:00 a.m.

So, the total time available in order to arrive on time to attend the Christmas gathering, t=6 hours

The total distance, Joshua has to travel, d= 348 miles.

As average speed= (total distance)/(total time)

So, the average speed of driving = 348/6=58 miles/hour

Hence, Joshua must drive at an average speed of 58 miles/hour in order to arrive on time.

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2 years ago

Which choice is equivalent to the expression √20 + √80

salantis [7]

Answer:

13.41

Step-by-step explanation:

Hope it helps!

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2 years ago

Read 2 more answers

The question is:

saul85 [17]

$f(x) = \sqrt{x+1} \\ y = \sqrt{x+1} \ or \ y^2 = x+1 \ or \ x = y^2 - 1 \\ Therefore, \ f^{-1}(x)=x^2 - 1$

$(fof^{-1})(a) = f(f^{-1}(a))=f(a^2-1) \\ =\sqrt{a^2-1+1}=\sqrt{a^2}=a \\ \\ (f^{-1}of)(a)=f^{-1}(f(a))=f^{-1}(\sqrt{a+1})= \\ (\sqrt{a+1})^2-1 = a+1-1 = a$

Therefore, $(fof^{-1})(a) = (f^{-1}of)(a) = a$

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2 years ago

Helpp pleaseee help graph thinngu

Anna [14]

The guy above did you dirty

6 0

2 years ago

the ratio of pens to pencils om carlo's case is case is 4:5. he has 16 pens. how many pencils does carlos have

chubhunter [2.5K]

Answer:

20 pencils

Step-by-step explanation:

4 pens (4) = 16 pens

5 pencils (4) = 20 pencils

This works because 4/5 and 16/20 are the same ratio, 16/20 isn't simplified..

4 0

2 years ago