All categories

3 years ago

What is the value of 7!??

Mathematics

2 answers:

jenyasd209 [6]3 years ago

7 0

Answer:

5040

Step-by-step explanation:

just took the test ❤

Ronch [10]3 years ago

5 0

7x6x5x4x3x2x1
= 5040

You might be interested in

What are two ways that you can find the surface area of a prism

3241004551 [841]

Answer:

Step-by-step explanation:

4 0

3 years ago

Sandra is opening a savings account which compounds interest quarterly. Her banker gave her the following function to find the a

anygoal [31]

A ..... Because .....

4 0

3 years ago

What is the nth term?

kumpel [21]

Let $a_k$ denote the kth term of the sequence. Then

$a_k=a_1+d(k-1)$

where d is the common difference between consecutive terms in the sequence and a₁ is the first term.

The sum of the first n terms is

$S_n=\displaystyle\sum_{k=1}^na_k=a_1+a_2+\cdots+a_{n-1}+a_n$

From the formula for $a_k$ , we get

$S_n=\displaystyle\sum_{k=1}^n(a_1+d(k-1))=a_1\sum_{k=1}^n1+d\sum_{k=1}^n(k-1)$

$S_n=\displaystyle na_1+d\sum_{k=0}^{n-1}k$

$S_n=na_1+\dfrac{d(n-1)n}2$

$S_n=\dfrac n2(2a_1-d+dn)$

So we have $d=-5$ , and $2a_1-d=16$ so that $a_1=\frac{11}2$ .

Then the nth term in the sequence is

$a_n=\dfrac{11}2-5(n-1)=\boxed{\dfrac{21-10n}2}$

7 0

3 years ago

Is it ever possible that sin (A+B)=⁡ (A+B)= sin⁡ A+sin⁡ B?

Cloud [144]

Answer:

It will always be the case when A and B are opposites

Step-by-step explanation:

sin(x) = -sin(-x) so ...

sin(A -A) = (A -A) = sin(A) -sin(A) = 0

That is, the given expression is true when B=-A.

3 0

3 years ago

Find Arc PR Please help and give explanation

garri49 [273]

Arc PR is 156 degrees. Since both angles are are making the forming arc they should be congruent. You can put (5x+23)=(9x-21) which is x=11.
Then you plug in 11 into your equation; 5(11)+23=78.
Since the vertex is on the outside of the circle then the arc is forms is 2 times the value of the angle.
78(2)=156

8 0

3 years ago