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kompoz [17]
3 years ago
12

Round 0.0695712 to 1 significant figure

Mathematics
1 answer:
lys-0071 [83]3 years ago
4 0

It would be 7x10^-2

That number would be rounded to 0.07

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1.95 is 1.5% of what number?
stiks02 [169]

Hello there, to answer your question...

<h2>1.95 is 1.5% of 130.</h2><h2 />

I hope the information I provided has helped.

4 0
3 years ago
Read 2 more answers
If
baherus [9]

Answer:  see proof below

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

Given: cos 330 = \frac{\sqrt3}{2}

Use the Double-Angle Identity: cos 2A = 2 cos² A - 1

\text{Scratchwork:}\quad \bigg(\dfrac{\sqrt3 + 2}{2\sqrt2}\bigg)^2 = \dfrac{2\sqrt3 + 4}{8}

Proof LHS → RHS:

LHS                          cos 165

Double-Angle:        cos (2 · 165) = 2 cos² 165 - 1

                             ⇒ cos 330 = 2 cos² 165 - 1

                             ⇒ 2 cos² 165  = cos 330 + 1

Given:                        2 \cos^2 165  = \dfrac{\sqrt3}{2} + 1

                              \rightarrow 2 \cos^2 165  = \dfrac{\sqrt3}{2} + \dfrac{2}{2}

Divide by 2:               \cos^2 165  = \dfrac{\sqrt3+2}{4}

                             \rightarrow \cos^2 165  = \bigg(\dfrac{2}{2}\bigg)\dfrac{\sqrt3+2}{4}

                             \rightarrow \cos^2 165  = \dfrac{2\sqrt3+4}{8}

Square root:             \sqrt{\cos^2 165}  = \sqrt{\dfrac{4+2\sqrt3}{8}}

Scratchwork:            \cos^2 165  = \bigg(\dfrac{\sqrt3+1}{2\sqrt2}\bigg)^2

                             \rightarrow \cos 165  = \pm \dfrac{\sqrt3+1}{2\sqrt2}

             Since cos 165 is in the 2nd Quadrant, the sign is NEGATIVE

                             \rightarrow \cos 165  = - \dfrac{\sqrt3+1}{2\sqrt2}

LHS = RHS \checkmark

4 0
3 years ago
The measure of angle 1 is 130°.
eimsori [14]

Answer:

The angle opposite angle 1

Step-by-step explanation:

Opposite angles have the same degree when two lines intersect because they are vertical angles.

4 0
3 years ago
Read 2 more answers
Tu went to the movies. he bought 2 tickets for $ 9.50 each, popcorn for $ 5.00, and 2 drinks for $ 4.25 each. He give the clerk
alexandr1967 [171]

Answer:

Option A -  $ 40.00 - $9.50 - $4.25 - $5.00                          

Step-by-step explanation:

Given : Tu went to the movies. he bought 2 tickets for $ 9.50 each, popcorn for $ 5.00, and 2 drinks for $ 4.25 each. He give the clerk two $ 20.00 bills.

To find : Which expression can not be used to find the amount of changes Tu got?

Solution :

He give the clerk two $ 20.00 bills i.e. 2\times 20 or 40

He bought 2 tickets for $ 9.50 each i.e. -(2\times 9.50) or -9.50-9.50

Popcorn for $ 5.00 i.e. -5

2 drinks for $ 4.25 each i.e. -(2\times 4.25) or -4.35-4.25

The expression can not be used to find the amount of changes Tu got is

' $ 40.00 - $9.50 - $4.25 - $5.00'.

Therefore, option A is correct.

3 0
3 years ago
Friend/GF applications, put them down below!
gizmo_the_mogwai [7]

Answer:

Yes it is constant.

Step-by-step explanation:

A constant rate means something "stays" the same.

I couldn't live without music. I like art. I love the outdoors, but don't go out much. I really love plants and science. Also, I don't like judging someone for their opinions, or first appearances. I love helping people and get all A's.

5 0
3 years ago
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