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Sliva [168]
3 years ago
12

5) What expression represents the square of the binomial (-9 + 2i) in simplest form?

Mathematics
1 answer:
Lerok [7]3 years ago
7 0

Answer:

Step-by-step explanation:

that is the simplest form.

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What does the phrase"between 7.2 and 7.6, inclusive" mean?
nalin [4]
The phrase gives you an interval where the extremes are included.

The intervals may be indicated in several ways. 
 7.2 ≤ x ≤ 7.6
3 0
3 years ago
Find the circumferences of the circle.
IgorC [24]
I am no expert but i got.
28.27
i hope this helps, sorry if i am wrong
8 0
3 years ago
The base of the triangle decreases by 30% and the height increases by 20%.
sergeinik [125]

Answer:

Area decreases by 16%

Step-by-step explanation:

Use formula for the area of the triangle

A=\dfrac{1}{2}\cdot \text{Base}\cdot \text{Height}

<u>Initial triangle:</u>

The base is 18 cm

The height is 5 cm

The area is

A_{initial}=\dfrac{1}{2}\cdot 18\cdot 5=45\ cm^2

<u>New triangle:</u>

The base is (1-0.3)\cdot 18=0.7\cdot 18=12.6\ cm

The height is (1+0.2)\cdot 5=1.2\cdot 5=6\ cm

The area is

A_{new}=\dfrac{1}{2}\cdot 12.6\cdot 6=37.8\ cm^2

Area decreases by

100\%-\dfrac{37.8}{45}\cdot 100\%=100\%-84\%=16\%

5 0
3 years ago
Which graph represents a quadratic function that has no real zeros?
xxTIMURxx [149]

Answer:

2nd graph (in the attached pics)

Step-by-step explanation:

Graphically, the <em>x-intercepts of the graph of a quadratic function are its zeroes. </em>

There can be

  • no zeroes (where graph doesn't cut the x-axis at all),
  • 1 zero (where graph touches the x-axis at one point only), and
  • 2 zeros (where the graph cuts the x-axis at 2 points)

Looking at the figures, the 2nd graph has no real zeroes, <em>because the graph doesn't cut the x-axis at all!</em>

<em />

So, the answer is the second graph.

5 0
3 years ago
Read 2 more answers
The surface area of a cone with radius r units and slant height s units is shown below:
Effectus [21]
<span>Lateral Area = (<span>π<span> • r •<span> slant height)
If radius = 2 and
slant height = 3 then

</span></span></span></span>
<span>Lateral Area = (<span>π<span>  * 2 * 3)

The lateral area = </span></span></span><span><span><span>18.8495559215 </span> </span> </span> <span>

</span>

3 0
4 years ago
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