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kkurt [141]
3 years ago
12

What is (4-x^2)(4-x^2) ?

Mathematics
1 answer:
Studentka2010 [4]3 years ago
4 0

Answer:

x^4 - 8 x^2 + 16

Step-by-step explanation:

Use formula (a-b)^2 = a^2-2ab+b^2

now a=4 b=x^2, plug in

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Can u pls help me with this question
ziro4ka [17]

Step-by-step explanation:

I am not sure bout this question sry

you reap what you sow ;)

6 0
3 years ago
What is the probability of landing on a multiple of 3 in a twenty-sided die?
scoray [572]

Answer:

1by 20

Step-by-step explanation:

no of digit by no of sides

5 0
3 years ago
Find the percent of change on an item that was $44 and now costs $66.
iVinArrow [24]

Answer:

33.3%

Step-by-step explanation:

the increase in price was $22.  Find the ratio

$22

-------

$66

which comes out to 0.33333, or 33.3%.

The percent change in the price of the item is 33.3%.

4 0
3 years ago
A pilot flew a 400-mile flight in 2.5 hours flying into the wind . Flying the same rate and with the same wind speed, the return
k0ka [10]

Answer:

20

Step-by-step explanation:

pilot flew a 400-mile flight in 2.5 hours flying into the wind . Flying the same rate and with the same wind speed, the return trip took only 2hours with a tailwind

The speed can be defined as the ratio distance over time, but in this case the pilot is flying at the speed of the plane as well of speed of the wind. We can denote speed of plane as "s" and speed of the wind as "k"

Then the speed of the plane=(s-k) this is because it is moving in the opposite direction of the wind.

But From the question, the plane distance=400mile and the corresponding time =2.5 h

Then the speed of the plane=(s-k) =400mile/2.5

=160mph

By the time it return from trip, the speed the plane flew with is (s+k) because the wind is at the rear.

From the question, the plane distance=400mile and the corresponding time =2 h

Then (s+k)= (400/2)

(s+k)=200mph

8 0
3 years ago
Excuse me but can someone help me with this I have to do it before tomorrow
Vedmedyk [2.9K]

Answer:

8)  Onaje is correct

9a) answers could be:  3(6y) or 4y + 6y + 8y  or 2(2y + 3y + 4y)

 b) all answers simplify to be 18y

Step-by-step explanation:

Paula is not correct because 16t + 9t ≠ 16 + 9 + 2t

16t + 9t only equals 25t

4 0
3 years ago
Read 2 more answers
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