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jonny [76]
3 years ago
10

Q # 6 please multiply help

Mathematics
1 answer:
Mkey [24]3 years ago
3 0
This is a problem of Difference-of-squares. We know that for a difference of squares a^2-b^2 the factorization is given by:

(a-b)(a+b)

To learn this you need to remember that a <em>difference</em> means <em>subtraction.</em> So applying those concepts we can solve this problem step by step.

Applying distributive property:

(2n)(2n-2)+2(2n-2)

Applying distributive property again:

4n^2-4n+4n+4

Simplifying:

4n^2-4

<em>The correct answer is C</em>
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I need help with question 3 so if you can take a little bit of your time to help that will be great :)
zhannawk [14.2K]
Part A equals 5

part B equals 1/2 and 1 hour

part C equals you just have to add all the times together where the dots are
8 0
3 years ago
"An airplane ends up 540 miles and 20 degrees north of east from its departure point. If there was a steady wind of 30 mph from
Olenka [21]

Answer:

vr = 540

vp = 486.22 j + 205.9 j

Theta  = 22.95

Step-by-step explanation:

The resultant velocity vr = vp + vw

vp = vector velocity of plane and

vw = vector velocity of wind

vr = vector resultant velocity

in one hour the plane travels 540 miles and hence the speed is 540 mph

Hence vr = 540

vp = 486.22 j + 205.9 j

Theta

= tan^{-1}\frac{205.9}{486.22} \\= 22.95

3 0
3 years ago
A clothing store is raising the price of all its sweaters by $3.00. Write a expression that could be used to find the new prices
ehidna [41]
Y=d-3. Y is equal to the cost of the sweaters before the price was raised. D represents the price of the sweaters after the price jump. The three is how much the sweater price was raised by. Say the new price of the sweaters are $29.99 each. You would plug in 29.99 for d. y=29.99-3. The new price of the sweaters would be $26.99 (this is just a sample problem)
8 0
3 years ago
1. If one stick of butter costs $0.55, what is the price for 8 sticks of butter?
lana [24]

Answer:

1. $4.40

2.  $13

3. $270

3 0
3 years ago
Read 2 more answers
X+y=5 and x-3y=3 linear equation I don't get an answer that makes sense
ddd [48]
If you want it to be y=mx+b form then the equations should look like this: y=x+5 and y=-1/3x+1.
3 0
3 years ago
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