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azamat
3 years ago
7

The sum of two numbers is nine. If one number is subtracted from the other, the result is -3. Find the numbers

Mathematics
1 answer:
12345 [234]3 years ago
3 0

Answer:

3,6

Step-by-step explanation:

x+y=9

x-y=-3

Adding these two equations we get 2x = 6, x=3

y=6

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A 30-ounce box of cereal contains 12 servings.
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Answer: The correct answer is B) 2.5 ounces/serving.

Step-by-step explanation:

All you have to do is simply divide 30 ounces by 12 and you get 2.5 ounces, which is Option B.

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4 years ago
You just received a raise after working for your company for a year. Your new hourly wage is $12.50. If you are paid biweekly an
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What is the common list multiple of 24 and 18 show your work
kifflom [539]

Answer:

24=1,2,3,4,6,8,12,24

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Given: -1/2x > 6.
lubasha [3.4K]

Answer:

B(2)

Step-by-step explanation:

SO basically think of it as x is a teenager that wants to be alone. so  have to figure out how to get everyone on the otehr side of their bedroom door (>)

so you are going to do this

-1/2x>6

/-1/2x  /-1/2x

x<6/-1/2

x<6*-2/1

x<-12

Read more on Brainly.com - brainly.com/question/14190937#readmore

8 0
3 years ago
Sin 1 + sin 2 + sin3 .................+ sin 360 = ?
lesya [120]

Assuming that arcs are given in degrees, call S the following sum:

S = sin 1° + sin 2° + sin 3° + ... + sin 359° + sin 360°


Rearranging the terms, you can rewrite S as

S = [sin 1° + sin 359°] + [sin 2° + sin 358°] + ... + [sin 179° + sin 181°] + sin 180° +
   + sin 360°

S = [sin 1° + sin(360° – 1°)] + [sin 2° + sin(360° – 2°)] + ...+ [sin 179° + sin(360° – 179)°]
   + sin 180° + sin 360°          (i)


But for any real k,

sin(360° – k) = – sin k


then,

S = [sin 1° – sin 1°] + [sin 2° – sin 2°] + ... + [sin 179° – sin 179°] + sin 180° + sin 360°

S = 0 + 0 + ... + 0 + 0 + 0        (... as sin 180° = sin 360° = 0)

S = 0


Each pair of terms in brackets cancel out themselves, so the sum equals zero.

∴   sin 1° + sin 2° + sin 3° + ... + sin 359° + sin 360° = 0          ✔


I hope this helps. =)


Tags:  <em>sum summatory trigonometric trig function sine sin trigonometry</em>

4 0
3 years ago
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