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Zolol [24]
3 years ago
8

What is the real part of 4 - 5i

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
7 0

Answer:

 5i is an imaginary number

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ANSWER FAST PLZZZZhow many lines of symmetry does this figure have?
Mumz [18]

Answer:

1

Step-by-step explanation:

theres only one place in this figure that can be cut down the middle and folded and not have any overlap

4 0
3 years ago
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If sin theta= 2/3 and tan theta<0, what is the value of cos theta
Sergeeva-Olga [200]
Cos
θ
=
√
5
3

or it could be cos
θ
=
√
5
−
3

Explanation:
Since sin
θ
is negative, it can be in the third or fourth quadrant
Drawing your right-angled triangle, place your
θ
in one of three corners. Your longest side will be 3 and the side opposite the
θ
will be -2. Finally, using Pythagoras theorem, your last side should be
√
5

Now, if your triangle was in the third quadrant, you would have
cos
θ
=
√
5
−
3
since cosine is negative in the third quadrant
But if your triangle was in the fourth quadrant, you would have
cos
θ
=
√
5
3
since cosine is positive in the fourth quadrant
8 0
3 years ago
Read 2 more answers
Below is the graph of f ′(x), the derivative of f(x), and has x-intercepts at x = –3, x = 1 and x = 2. There are horizontal tang
mojhsa [17]

Answer:

C. f has a relative maximum at x = 1.

Step-by-step explanation:

A. False.  f(x) is concave down when f"(x) is negative.  f"(x) is the tangent slope of the graph, f'(x).  So f(x) is concave down between x = -1.5 and x = 1.5.

B. False.  f(x) is decreasing when f'(x) is negative.  So f(x) is decreasing in the intervals x < -3 and 1 < x < 2.

C. True.  f(x) has a relative maximum where f'(x) = 0 and changes from + to -.

8 0
3 years ago
Terry pays £480 per month in rent.
Sholpan [36]

Answer: £516

Step-by-step explanation:

7.5 increase = 100 + 7.5 = 107.5

107.5/100 = 1.075 (multiplier)

480 x 1.075 = 516

8 0
3 years ago
If arc AB =70 how many degrees are in ADB
storchak [24]
Somebody else had asked this question and they said it was 35 so your best bet is to go with 35
8 0
3 years ago
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