All categories

3 years ago

I really need help with this

Mathematics

1 answer:

Len [333]3 years ago

7 0

Answer:

Step-by-step explanation:

I recall seeing this question. If I'm wrong, let me know.

You might be interested in

The length of a day on Earth is 24 hours. The length of a day on Mercury is 58 2/3 times the length of a day on earth. The lengt

Blizzard [7]

Answer:

Roughly about 1,407.

Step-by-step explanation:

Simply multiply 24 times 58 2/3

3 0

4 years ago

Find the coefficient of x^8 in the expansion of (x^2-2/x)^7

Nady [450]

Answer:

So, the coefficient of x8 in the given expansion will be 210.

Step-by-step explanation:

We know,

General term in (x+a)n is given by,

Tr+1=C(n,r)xn−rar

∴ General term in (x2−1x)10 ,

Tr+1=C(10,r)(x2)10−r(−1x)r

⇒Tr+1=(−1)rC(10,r)x20−2rx−r

Now, we have to find the term having coefficient x8.

∴20−2r−r=8⇒r=4

So, T5 will have coefficient x8.

∴T5=(−1)4C(10,4)x8

⇒T5=10⋅9⋅8⋅74⋅3⋅2⋅1x8

⇒T5=210x8

5 0

3 years ago

Determine the equation of the graph, and select the correct answer below.

Alinara [238K]

Answer:

The equation of the parabolic function is :

$y=(x-1)^2-3$

Step-by-step explanation:

The standard equation of a parabola is given by:

$y=a(x-h)^2+k$

where $(h,k)$ represents the vertex of the parabola.

From the graph shown in figure we can find the vertex of the parabola which is the minimum point of parabola and lies st point $(1,-3)$

So, we can say:

$(h,k)\rightarrow (1,-3)$

Plugging in the values of vertex in standard equation of parabola,

$y=a(x-1)^2+(-3)$

Simplifying the equation:

$y=a(x-1)^2-3$

We can find value of $a$ by plugging in a point from the graph.

Using point (0,-2) which lies on graph.

Plugging in the given point.

$-2=a(0-1)^2-3$

$-2=a-3$

Adding 3 to both sides.

$-2+3=a-3+3$

$1=a$

∴ $a=1$

Plugging in $a=1$ , the equation of parabola can be written as:

$y=(x-1)^2-3$

3 0

3 years ago

2/3x+1/3y=2<br> Graph the linear equation

tresset_1 [31]

Answer:

The Graph below

3 0

3 years ago

Whats the probability of getting a red ace in a deck of cards?

posledela

2/52 which is 1/26 ..hope it helped

4 0

3 years ago

Read 2 more answers