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2 years ago

What’s the answer to #3?

Mathematics

1 answer:

Neporo4naja [7]2 years ago

7 0

Answer:

Step-by-step explanation:

because the letters match up for the sides of each triangle

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Find an explicit formula for the following sequence, an which starts with a1=2/3. 2/3,3/4,4/5,5/6,…

Flura [38]

Answer:

Step-by-step explanation:

a1=2/3

sequence is 2/3,3/4,4/5,...

for numerator a1=2

d=3-2=1

numerator of nth term=a1+(n-1)d=2+(n-1)×1=2+n-1=n+1

denominator = 1 more than numerator=n+1+1=n+2

so an=(n+1)/(n+2)

or for denominator a1=3,d=4-3=1

denominator of nth term=3+(n-1)×1=3+n-1=n+2

an=(n+1)/(n+2)

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2 years ago

How many solutions can be found for the linear equation? 4(x + 5) - 5 = 8x + 18 2

Elena L [17]

Answer:

$4x + 20 - 5 = 0 \\ 4x + 15 = 0 \\ 4x = - 15 \\ x = - \frac{15}{4}$

Step-by-step explanation:

$8x + 18 = 0 \\ 8x = - 18 \\ x = - \frac{18}{8} \\ x = - \frac{9}{4}$

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2 years ago

Help what’s the answer???

Alex777 [14]

The answer is 64!!

Hope this helps!

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2 years ago

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What is 44.2 rounded to the nearest whole number?

tatuchka [14]

44 is the number rounded

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2 years ago

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Which of the following polynomials is the expansion of (x - y)4? x4 - x3y + x2y2 - 2xy3 + y4 x4 -2x3y3 + y4 x4 - 2x3y + x 2y 2 -

sammy [17]

Answer:

$(x-y)^4=x^4-x^3y+6x^2y^2-4xy^3+y^4$ .

Step-by-step explanation:

We want to find the polynomial that will result from expanding:

$(x-y)^4$ .

Recall that we can use the Pascal's triangle to obtain the coefficient as:

1 4 6 4 1

Also note how the negative sign is going to alternate.

The power of x will decrease from left to right while the power of y increases from left to right

The expansion then becomes:

$(x-y)^4=x^4-x^3y+6x^2y^2-4xy^3+y^4$ .

7 0

2 years ago