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3 years ago

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Mathematics

2 answers:

kumpel [21]3 years ago

6 0

Answer:

Step-by-step explanation:

steposvetlana [31]3 years ago

3 0

Answer:

$\boxed{n = -13 - 4i}$

Step-by-step explanation:

$\text{Assuming } i=\sqrt{-1}$

$(13 + 4i) + n = 0$

$n = -(13 + 4i)$

$\boxed{n = -13 - 4i}$

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Find the perimeter of a rectangle with a length of 12 feet and a width of 6 feet.

jeka57 [31]

Perimeter= 2 ( length + width)
2×(12+6)
2×18
=36

3 0

3 years ago

E=mc

lara [203]

Answer:

Step-by-step explanation:

Divide both sides of the equation by c²

5 0

3 years ago

?? So lost with this

labwork [276]

Answer:

$A)\ 1,\ -1,\ -3\\\\B)\ d=-2\\\\C)\ \left\{\begin{array}{ccc}a_1=11\\a_n=a_{n-1}-2\end{array}\right\\\\D)\ f(n)=-2n+13$

Step-by-step explanation:

It's an arithmetic sequence.

9 = 11 - 2

7 = 9 - 2

5 = 7 - 2

3 = 5 - 2

A) next three terms: 3 - 2 = 1, 1 - 2 = -1, -1 - 2 = -3

B) Common difference = -2

C) Recursive Function:

$\left\{\begin{array}{ccc}a_1=11\\a_n=a_{n-1}-2\end{array}\right$

D) Explicit Function:

$f(n)=a_1+(n-1)d$

a₁ - first term

d - common difference

Substitute a₁ = 11 and d = -2:

$f(n)=11+(n-1)(-2)=11-2n+2=-2n+13$

4 0

3 years ago

The ratio of apples to dollars is 4:5. How many apples can you buy for $35

almond37 [142]

<span> The ratio of apples to dollars is 4:5. How many apples can you buy for $35 = 28 apples</span>

3 0

3 years ago

Read 2 more answers

Expand and combine like terms.<br><br> (2x3 + 4x5)2 =

Kisachek [45]

Answer:

Step-by-step explanation:

(2x3 = 6

4x5 = 20)

(6+20) = (26)

(26)2 = 52

=52

3 0

3 years ago