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devlian [24]
2 years ago
14

What is 2+ (-3) equal to -1?

Mathematics
1 answer:
Stolb23 [73]2 years ago
3 0

Answer:

A. because -1 is indeed 3 units to the left, or -3/+(-3) to the right.

P.s.

Please give me brainliest for my next rank.

You might be interested in
(Will give Brainliest/5 Stars if correct answer)
tensa zangetsu [6.8K]
Answer: Choice D) 
The angle between the two vectors is approximately 71.6 degrees

----------------------------------------------
----------------------------------------------

Work Shown: 

Each time I write the word "dot" I mean "dot product". 

|u| = length of vector u
|u| = sqrt(u dot u)
|u| = sqrt(<8,4> dot <8,4>)
|u| = sqrt(8*8 + 4*4)
|u| = sqrt(64 + 16)
|u| = sqrt(80)
|u| = sqrt(16*5)
|u| = sqrt(16)*sqrt(5)
|u| = 4*sqrt(5)

-----------------------

|v| = length of vector v
|v| = sqrt(v dot v)
|v| = sqrt(<9,-9> dot <9,-9>)
|v| = sqrt(9*9 + (-9)*(-9))
|v| = sqrt(81+81)
|v| = sqrt(2*81)
|v| = sqrt(2)*sqrt(81)
|v| = sqrt(2)*9
|v| = 9*sqrt(2)

-----------------------

u dot v = <8,4> dot <9,-9>
u dot v = 8*9 + 4*(-9)
u dot v = 72-36
u dot v = 36

-----------------------

cos(theta) = (u dot v)/(|u|*|v|)
cos(theta) = (36)/(4*sqrt(5)*9*sqrt(2))
cos(theta) = (36)/(36*sqrt(10))
cos(theta) = 1/(sqrt(10))
cos(theta) = sqrt(10)/10
theta = arccos(sqrt(10)/10)
theta = 71.56505
which rounds to 71.6 when rounding to one decimal place (nearest tenth)

That's why the approximate answer is roughly 71.6 degrees

7 0
3 years ago
You are still debating about the two different computers. If you are paid $10.00/hour and your deductions are FICA (7.65%), fede
sattari [20]

Answer:

89 hours

Step-by-step explanation:

First solve all the deductions.

For each multiply the $10, which you are paid, and the percentage.

For FICA: $10 x 0.0765 = $0.77 per hr

For Fed tax: $10 x 0.12 = $1.2 per hr

For State tax: $10  x 0.08 = $0.8 per hr

Now subtract the remaining pay:

10 – 0.77 – 1.2 – 0.8 = $7.23

Time required = $640 / $7.23 per hr

Time required = 89 hrs

Final answer:

89 hours

8 0
3 years ago
Find tan 0<br> 16<br> 20<br> 12<br> A.<br> 19<br> B.<br> D.<br> 20
lisov135 [29]

Answer:

Answer is 16/12

Step-by-step explanation:

Tan is Opposite by Adjacent. the opposite side is 16, adjacent side is 12 and hypotenuse is 20.

so O/A= 16/12

8 0
2 years ago
Read 2 more answers
What is the scale factor from figure A to figure B?
Andrej [43]

Answer:

hi its simple.

Step-by-step explanation:

9;3

or simplified...

3;1

3 0
2 years ago
Read 2 more answers
Simplify. (-2y^3)^3(-3x^2yz^2)^3
Alik [6]

=-8y^9*-27x^6y^3z^6

=216x^6y^12z^6

6 0
2 years ago
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