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jonny [76]
3 years ago
5

Another Giveaway! 60 points!

Mathematics
2 answers:
ivolga24 [154]3 years ago
8 0

Answer:

Thank you for this generous donation of 60 points!

Margaret [11]3 years ago
5 0

Answer:

Hi

Step-by-step explanation:

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Solve:<br> sin5x - cos2x + sin x = 0.
mote1985 [20]

Answer:

x = 10 , 45 degrees.

Step-by-step explanation:

This seems a tricky one .

I guess we can use   sin A + sin B =  2 sin (A+B)/2 cos (A - B) / 2

so sin 5x + sin x = 2 sin 3x cos 2x so our equation becomes

2 sin 3x cos 2x - cos 2x = 0

cos 2x ( 2 sin 3x - 1) = 0

so 2 sin 3x = 1

sin 3x = 1/2

giving 3x = 30 degrees and x = 10 degrees

or cos 2x = 0

so 2x = 90

giving x = 45 degrees.

8 0
3 years ago
What is z- 4/4 +8 simplified?​
vova2212 [387]

Answer:

aw baby naw that not cool

Step-by-step explanation:

3 0
2 years ago
(1.2 x 10-4) + (2.4 x 10-3)
ryzh [129]

Answer:

29

Step-by-step explanation:

(1.2 x 10-4) + (2.4 x 10-3)

Simplify

1.2 x 10- 4 = 8

2.4 x 10- 3 = 21

Add both sums to get 29!

SCIENTIFIC NOTATION

2.9 x 10 to the 1st power

Move the decimal over to make a number less than ten, so that makes 2.9 and 10 to the 1st because you moved the decimal once! Hope this is better

6 0
3 years ago
Can i get help on question 7 please?
CaHeK987 [17]

Do you have notes so I can look at them to help you? Cause I pretty good at math but I need the notes.


3 0
3 years ago
Johanna started her new job for apple incorporated. She gets paid $21 per hour and received a $250 signing bonus. Her first chec
algol [13]
The answer is 42
1132-250=882
882/21=42
6 0
3 years ago
Read 2 more answers
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