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3 years ago

13

How do you use a scientific calculator?

1 answer:

egoroff_w [7]3 years ago

8 0

Try to start by reading the manual it came with. If it didn't come with a manual, then your teacher in school will teach you how to use it for specific commands. Otherwise it's just like using a regular calculator but with the ability to do more things, what do you need to know on it?

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Question 9 - (3 marks available)

finlep [7]

Answer: a) 1,600

b) 35,000

c) 120,000

<u>Step-by-step explanation:</u>

First, round each number to one significant digit (the first digit).

Then multiply them.

a) 17 --> rounds to 20

82 --> rounds to 80

20 x 80 = 2 x 8 with two zeros

= 1 6 0 0

b) 54 --> rounds to 50

671 --> rounds to 700

50 x 700 = 5 x 7 with three zeros

= 3 5 0 0 0

c) 207 --> rounds to 200

643 --> rounds to 600

200 x 600 = 2 x 6 with four zeros

= 1 2 0 0 0 0

6 0

2 years ago

FIND PR.PLS HELP BRAINLIEST...

slega [8]

Answer:

6.2 units.

Step-by-step explanation:

We are given two angles and an opposite corresponding side. To solve for an unknown side, we can use the law of sines.

$\frac{8}{sin(90)}=\frac{x}{sin(180-39-90)}=\frac{x}{sin(51)}$

Cross multiplying and solving will get you this:

$x=\frac{8(sin(51))}{sin(90}$

Which can simplify to:

$x=8(sin(51))$

Which putting into a calculator gets you:

$x=6.2$

So the line PR is 6.2 units long.

6 0

3 years ago

Please help a picture of the problem is attached plz no trolls

Dmitry [639]

3r+1w=5
5r+1w=80

System of equations :)

3 0

2 years ago

T F IfA and B are similar matrices, then AT=BT

muminat

Answer:

Step-by-step explanation:

We know that for two similar matrices $A$ and $B$ exists an invertible matrix $P$ for which

$[tex]B = P^{-1} AP$ [/tex]

∴ $B^{T} = (P^{-1})^{T} A^{T} P^{T} \\$

Also $P^{-1}P = I\\$

and $(P^{-1})^{T} = (P^{T})^{-1}$

∴ $(P^{-1})^{T}P^{T} = I$

so, $B^{T} = (P^{-1})^{T} A^{T} P^{T} = (P^{T})^{-1}A^{T} P^{T}\\B^{T} = A^{T} I\\B^{T} = A^{T}$

7 0

3 years ago

Which value would make the inequality true?

nata0808 [166]

Answer:

51

Step-by-step explanation:

Hope this helps. . .

5 0

1 year ago

Read 2 more answers