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Elena-2011 [213]
3 years ago
8

Can you guys please help me with these problems?

Mathematics
1 answer:
Andrews [41]3 years ago
7 0

Answer:

Step-by-step explanation:

a)

2x^-3\\2*(\frac{1}{x^3} )\\\\\frac{2}{x^3} \\\\b)

x^3*2x^0\\x^3*2\\2x^3\\

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The graph of a trigonometric function oscillates between y=1 and y=-7. It reaches its
madam [21]

Answer:

y = 4 sin(½ x) − 3

Step-by-step explanation:

The function is either sine or cosine:

y = A sin(2π/T x) + C

y = A cos(2π/T x) + C

where A is the amplitude, T is the period, and C is the midline.

The midline is the average of the min and max:

C = (1 + -7) / 2

C = -3

The amplitude is half the difference between the min and max:

A = (1 − -7) / 2

A = 4

The maximum is at x = π, and the minimum is at x = 3π.  The difference, 2π, is half the period.  So T = 4π.

Plugging in, the options are:

y = 4 sin(½ x) − 3

y = 4 cos(½ x) − 3

Since the maximum is at x = π, this must be a sine wave.

y = 4 sin(½ x) − 3

4 0
3 years ago
If P(A) =2/3<br> P(B) = 4/5, and P(AUB) =11/15<br> what is P(AB)?
Marrrta [24]

Answer:

11/15

Step-by-step explanation:

5 0
3 years ago
A piece of work can be completed by 45 men in 90 days if only 30 men are available, how many days will it take to complete the s
andrew-mc [135]

Answer:

  135 days

Step-by-step explanation:

Often, we measure work in man·days. This piece of work requires ...

  (45 man)·(90 days) = 4050 man·days

When there are only 30 men, the number of days required can be found by dividing this work by the number of men:

  4050 man·days/(30 man) = 135 days

_____

Another approach is to realize the time is inversely proportional to the number of men. If the number of men is 30/45 = 2/3 the original, then the time will be 3/2 the original, or ...

  (3/2)·90 days = 135 days.

7 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST ASAPPPP
irinina [24]
Answer: 49.5 round up to 50

Explanation: add the area of a rectangle plus the area of a triangle
5 0
2 years ago
Im in need im gonna fail can yall help me out
vova2212 [387]

1. RTL and LTN

2.LTN and NTE

3.STE and NTE

4.RTL

5.RNT and SNU

6. RNV and VNT

7. SNU

Please mark Brainlist

5 0
3 years ago
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