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nlexa [21]
3 years ago
8

Solve the equation if 0º≤x≤360º cos x=- 1/2

Mathematics
1 answer:
frutty [35]3 years ago
8 0

Answer:

The answer is D

Step-by-step explanation:

Check the unit circle and the ones with x's that equal -1/2 are the ones you are looking for.

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You have 40 quarters. You find 20% more quarters in your room. Then
Annette [7]

Answers:

Expression for the total number of quarters is 40*1.20

Amount of money you have left is 6 dollars

===================================================

Explanation:

You start with 40 quarters. 20% of this is 0.20*40 = 8 which means you found 8 more quarters. The total goes from 40 to 40+8 = 48.

A slight shortcut is to write 40*1.20 = 48

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

48 quarters = 48*0.25 = 12 dollars

Or you can divide by 4 to determine the total value of the quarters in dollars.

If you spent half (50%) of that money, then you'll be left with 6 dollars.

8 0
2 years ago
Planes X and Y and points C, D, E, and F are shown.
jekas [21]

Answer: Maybe B

Step-by-step explanation:

6 0
2 years ago
Factorise them please
Shalnov [3]

Answer:

2x+10 = 2(x+5)

5x-15 = 5(x-3)

8x+6 = 2(4x+3)

12x-8 = 4(3x-2)

-HOPE IT HELPS-


Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
Please help ASAP!!!!
Inga [223]
A negative times a negative is a positive, and a negative times a positive is equal to a negative. I’ve never used that program so if that what u need help with sorryyy
5 0
3 years ago
Which are solutions of the equation 4x2 – 7x = 3x + 24? Check all that apply.
SCORPION-xisa [38]

Answer:

{-3/2, 4}

Step-by-step explanation:

Use synthetic division here.  If the remainder is 0, then the divisor is a root or solution.

Here we have x = -4.  Perform the synthetic division as follows:

-4       4     -10    -24

                 -16     108

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

          4      -26     84              The remainder is 84, which tells us -4 is NOT

                                                a root/solution.

Try -3/2 as divisor this time:

-3/2    4     -10    -24

                   -6    24

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

          4      -16       0            Remainder is 0, so -3/2 is a solution

Show in the same manner that 4 is a solution also.  Or determine whether x - 4 satisfies 4x - 16 = 0 (it does).

8 0
3 years ago
Read 2 more answers
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