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kirza4 [7]
2 years ago
10

How do I answer 3 and 4

Mathematics
2 answers:
RSB [31]2 years ago
6 0

Answer:

yo have to think very hard about it

dmitriy555 [2]2 years ago
5 0

sorry, I don't have an answer but I do want to know myself

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What is the coefficient of x^4y^4 in the expansion (x+y)^8?
Ivanshal [37]

Answer:

  C.  70

Step-by-step explanation:

In the expansion of (a + b)^n, the k-th term is ...

  nCk·a^(n-k)b^k . . . . . k = 0 to n; nCk = n!/(k!(n-k)!)

Here, we have n=8, k=4, so the term of interest is ...

  8C4·x^4y^4 = (8·7·6·5)/(4·3·2·1)x^4y^4 = 70x^4y^4

The coefficient of the term is 70.

3 0
3 years ago
Y =1/4x + 3<br> Y = -1<br> Help me
kap26 [50]

Y = 7  

Explication pas à pas:

x est -3 donc -3 et connectez le x.

Y = -1 / 3 (-3) +5.

Y = 1 + 5

Y = 7

7 0
3 years ago
Solve for equation4y+4=3x
Basile [38]

Answer:

Step-by-step explanation:

Switch sides:

3x = 4y+4

Divide both sides by 3:

\frac{3x}{3}=\frac{4y}{3}+\frac{4}{3}

Simplify to give:

x=\frac{4y+4}{3}

5 0
2 years ago
Explain how to estimate 36.8 + 231 two different ways
larisa [96]
You could do 37+230 or 40 + 235
5 0
3 years ago
Find the value of x in the triangle listed here. If you could show me the steps, I would appreciate it.
-Dominant- [34]

Answer:

71°

Step-by-step explanation:

The triangle shown is an isosceles triangle. Isosceles triangles have two equal sides and two equal angles. When all 3 angles are added, it should have a sum of 180°. The tip of the triangle is the part of the triangle with the smallest degree/angle. So the two remaining angles are the same amount.

180°=38°+x+?

180°=38°+71°+71°

Both missing angles are the same degree, and when both are added to 38, it has a sum of 180. x is equal to 71°.

7 0
2 years ago
Read 2 more answers
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