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3 years ago

I need help with finding out both of the answers to these questions.

Mathematics

2 answers:

Semmy [17]3 years ago

7 0

Answer:

6). unknown side is 6.23m

7). angle is 26.58 degrees

Step-by-step explanation:

you must use the Pythagoras theorem formula to find the unknown side if you have only two sides

Anna35 [415]3 years ago

4 0

What he said is correct ^^

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3 years ago

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2 years ago

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lakkis [162]

Answer:

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Step-by-step explanation:

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2 years ago

Given z1 = 1+i and z2 = 2+3i.

Margaret [11]

Answer:

(a) $w=2+5i-6=-4+5i$

Multiplicative inverse of w will be $\frac{1}{-4+5i}$

(B) As w is same as the product of $z_1\ and\ z_2$

So there multiplicative inverse will also be same

Step-by-step explanation:

We have given two complex numbers

$z_1=1+i$ and $z_2=3+2i$

(a) First we have to find $w=z_1z_2$

So $w=(1+i)(2+3i)=2+3i+2i+6i^2=2+5i+6i^2$

As we know that $i^2=-1$

So $w=2+5i-6=-4+5i$

Multiplicative inverse :

It is that number when multiply with the number which we have have to find the multiplicative inverse gives result as 1

So multiplicative inverse of w will be $\frac{1}{-4+5i}$

Because when we multiply $-4+5i$ with $\frac{1}{-4+5i}$ it gives result as 1

(b) As w is same as the product of $z_1\ and\ z_2$

So there multiplicative inverse will also be same

4 0

3 years ago

the price of a small pizza increased from $5 to $8. what is the percent of increase in the cost of the pizza? round to the neare

Ne4ueva [31]

60%

Working

£5:100%
£1:20%
£8:160%

So percentage increase is 60%

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3 years ago