Help?????????????????

Mathematics

1 answer:

mr Goodwill [35]3 years ago

5 0

Answer:

$1)-\sqrt{2.25} = - \sqrt{225 \times {10}^{ - 2} } \\ = -\sqrt{225} \times \sqrt{ {10}^{ - 2} } \\ =- 15 \times {10}^{ - 1} =- 1.5 = -\frac{3}{2} \\ 2) -\frac{3}{2} = -1.5 \\ thank \: you$

You might be interested in

Which speed is the fastest?

Schach [20]

Answer:

C, 180 miles/ 3 hours

Step-by-step explanation:

C is the correct answer because you need to find the unit rate of all of the numbers.

A. = 30 mph

B. = 45 mph

C. = 60 mph

D. = 40 mph

Therefore, C is the fastest.

4 0

3 years ago

HELP PRECALC NEED IN PROOF FORM

Vinil7 [7]

Hello, please consider the following.

We know the following, right ?

$(\forall a, b \in \mathbb{R}) \left( sin(a+b)=sin(a)sin(b)+cos(a)cos(b) \right)$

So, here, it gives.

$Asin(\omega t+\phi)=Asin(\phi){\sf \bf sin(\omega t)}+Acos(\phi){\sf \bf cos(\omega t)}\\\\=c_2{\sf \bf sin(\omega t)}+c_1{\sf \bf cos(\omega t)}\\\\\text{ *** where }c_2=Asin(\phi) \text{ and } c_1=Acos(\phi) \text{ ***}$