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Eduardwww [97]
3 years ago
5

Simplify. (3-2i)(-5)

Mathematics
1 answer:
Usimov [2.4K]3 years ago
3 0

Answer:

2i-15

......................

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Central and inscribed angle practice
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Step-by-step explanation:

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Do these two equations represent the same line 10x+4y=-8 5x+2y=10?
AlladinOne [14]

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Step-by-step explanation:

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For what values of q are the two vectors A = i + j + kq each other and B-iq-23 + 2kg perpendicular to
Sloan [31]

Answer:

The value of q are 0.781,-1.281.

Step-by-step explanation:

Given : Two vectors A=i+j+kq and B=iq-2j+2kq are perpendicular to each other.

To find : The value of q ?

Solution :

When two vectors are perpendicular to each other then their dot product is zero.

i.e. \vec{A}\cdot \vec{B}=0

Two vectors A=i+j+kq and B=iq-2j+2kq

(i+j+kq)\cdot (iq-2j+2kq)=0

(1)(q)+(1)(-2)+(q)(2q)=0

q-2+2q^2=0

2q^2+q-2=0

2q^2+q-2=0

Using quadratic formula,

q=\frac{-1\pm\sqrt{1^2-4(2)(-2)}}{2(2)}

q=\frac{-1\pm\sqrt{17}}{4}

q=\frac{-1+\sqrt{17}}{4},\frac{-1-\sqrt{17}}{4}

q=0.781,-1.281

Therefore, The value of q are 0.781,-1.281.

6 0
3 years ago
1. Use the number line to help you decide which statement is true.
Mashutka [201]
It’s the last one because 1/2 is way more then 2/5 so I think it would be 1/5<1/2 so the last one
6 0
3 years ago
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