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3 years ago

12

Solve the inequality. T/4 > 7

1 answer:

Digiron [165]3 years ago

3 0

Answer:

T>28

Step-by-step explanation:

Multiply 4 to both sides to get your variable alone.

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Simplify (Are all division)<br><br>2+4i<br>3i<br><br>3+2i<br>4+i<br><br>2i^11

Alla [95]

$We\ know:\ i=\sqrt{-1}\to i^2=-1$

$\dfrac{2+4i}{3i}=\dfrac{2+4i}{3i}\cdot\dfrac{3i}{3i}=\dfrac{6i+12i^2}{9i^2}=\dfrac{6i+12(-1)}{9(-1)}\\\\=\dfrac{6i-12}{-9}=\dfrac{2i-4}{-3}=\dfrac{4}{3}-\dfrac{2}{3}i$

$\dfrac{3+2i}{4+i}=\dfrac{3+2i}{4+i}\cdot\dfrac{4-i}{4-i}=\dfrac{(3+2i)(4-i)}{4^2-i^2}\\\\=\dfrac{(3)(4)+(3)(-i)+(2i)(4)+(2i)(-i)}{16-(-1)}=\dfrac{12-3i+8i-2i^2}{16+1}\\\\=\dfrac{12+5i-2(-1)}{17}=\dfrac{12+5i+2}{17}=\dfrac{14+5i}{17}=\dfrac{14}{17}+\dfrac{5}{17}i$

$2i^{11}=2i^{10+1}=2i^{10}i^1=2i^{2\cdot5}i=2i(i^2)^5=2i(-1)^5=2i(-1)=-2i$

$Used:\ (a+b)(a-b)=a^2-b^2$

6 0

3 years ago

Round the decimal 7.16 ?

Phoenix [80]

Answer:

7(nearest whole number)

7.2(1 decimal place)

8 0

3 years ago

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Anyone know this answer for this question

svlad2 [7]

Answer:

What's the question, it's bloked on my computer

Step-by-step explanation:

3 0

3 years ago

At the burger place, 3 mini hamburgers fit in each small to-go bag. if the baldwin family ordered 41 mini hamburgers for the tri

arsen [322]

How man bags were used?

41 / 3 = 13.7

We can say about 14 bags by rounding to the nearest whole number. Therefore, 14 bags were used.

5 0

3 years ago

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Help please and thanks! I always give brainliest!

Tju [1.3M]

Answer:

x=18, y=9

Step-by-step explanation:

The lines of y+3 and 12 look equal to each other. So do x-3 and 15. Because of this, we set each equal to each other and solve.

solving for x:

x-3 = 15

+ 3 +3

x=18

solving for y:

y+3=12

- 3 -3

y=9

hope this helps!!!

6 0

2 years ago

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