3 years ago

I need help with this problem 30 points up for grabs if you answer.

Mathematics

1 answer:

Rama09 [41]3 years ago

7 0

Answer:

Step-by-step explanation:

13 cm

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A number divided by -3 is -5 what is the number

olga55 [171]

Answer:

+15

Step-by-step explanation:

Let No be x

X÷-(3)=-5

X=+15

Law (-ve times -ve=+ve)

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3 years ago

Are there any limits to the value of Sine, Cosine and Tangent? if so, what are they and why?

worty [1.4K]

With Sine, Cosine, and Tangent there are no limits with the numbers you can use and they can be found on a calculator. When you press one of the 3 it will show up like:

Sine(
Cos(
Tan(

Than just add your number and press enter

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2 years ago

What is the length of diagonal BD in rectangle ABCD if BC=5 and CD=8.

svetlana [45]

I hope this helps you

6 0

3 years ago

Are these correct???

Nutka1998 [239]

Answer:

They are all correct.

Step-by-step explanation:

1/2(b)(h)

1/2(4)(6)

1/2(24)

2. l x w

7 x 5

3. (b)(h)

(8)(4)

8 0

3 years ago

Using mathematical induction prove whether or not the following statement is true for all positive integers n, or show why it is

aniked [119]

Base case: For $n=1$ , the left side is 2 and the right is $2\cdot1^2=2$ , so the base case holds.

Induction hypothesis: Assume the statement is true for $n=k$ , that is

$2+6+10+\cdots+4k-2=2k^2$

We want to show that this implies truth for $n=k+1$ , that

$2+6+10+\cdots+4k-2+4(k+1)-2=2(k+1)^2$

The first $k$ terms on the left reduce according to the assumption above, and we can simplify the $k+1$ -th term a bit:

$\underbrace{2+6+10+\cdots+4k-2}_{2k^2}+4k+2$

$2k^2+4k+2=2(k^2+2k+1)=2(k+1)^2$

so the statement is true for all $n\in\mathbb N$ .

5 0

3 years ago