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3 years ago

How do i write this proof?

Mathematics

1 answer:

storchak [24]3 years ago

6 0

It is a rhombus because:
• The figure has four sides
• The acute angles are equal and opposite each other
• The obtuse angles are equal and opposite each other
• The figure is a parallelogram
Hope this helps!

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What is the value of A when we rewrite<br> (2/3)^x+4 - (2/3)^x as A • (2/3)^x

horsena [70]

Answer:

A= –65/81

Step-by-step explanation:

hope this explains it

5 0

3 years ago

If x=(10-3i) and y=(3-10i), then xy=? and x/y=?

Solnce55 [7]

Answer:

$xy=-109i$

$\frac{x}{y}=\frac{60}{109}+\frac{91}{109}i$

Step-by-step explanation:

$xy=(10-3i)(3-10i)$

To compute x times y must use foil on the right hand side.

First: $10(3)=30$

Outer: $10(-10i)=-100i$

Inner: $-3i(3)=-9i$

Last: $-3i(-10i)=30i^2=-30$

------------------------------------Add like terms:

$-109i$

----------------

$\frac{x}{y}$

$\frac{10-3i}{3-10i}$

Multiply top and bottom by bottom's conjugate:

$\frac{(10-3i)(3+10i)}{(3-10i)(3+10i)}$

Foil the top and just do first and last of Foil for the bottom since the bottom contains multiplying conjugates:

$\frac{30+100i-9i-30i^2}{9-100i^2}$

Replace $i^2$ with -1:

$\frac{30+91i+30}{9+100}$

$\frac{60+91i}{109}$

$\frac{60}{109}+\frac{91}{109}i$

7 0

3 years ago

Please answer this!!!!!!!!!!

Marrrta [24]

Answer:

roberto

Step-by-step explanation:

6 0

2 years ago

Simplify the expression

AlexFokin [52]

Answer:

Step-by-step explanation:

$\frac{3+4\iota}{2+4\iota}=\frac{3+4 \iota}{2+4\iota} \times \frac{2-4 \iota}{2-4 \iota}\\=\frac{6 -12 \iota+8 \iota-16 \iota^2 }{4-16 \iota^2 }\\=\frac{ 6-4 \iota+16}{4+16}\\=\frac{22-4 \iota}{20}$

5 0

3 years ago

How do you solve 3 1/2- 2 2/5

Veseljchak [2.6K]

You would first have to find common denominators for the fractions. In this case it would be 10. So your new equation would be 3 5/10 - 2 4/10. Once you do this you can then subtract and solve getting the answer of 1 1/10

5 0

3 years ago