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3 years ago

What is the measure of co? 148 90° 49 180

Mathematics

1 answer:

Kay [80]3 years ago

3 0

Answer:

Step-by-step explanation:

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( use elimination) on 3x+5y=12 and x-3y=4

Elena L [17]

Answer:

x=4 y=0

Step-by-step explanation:

3x+5y=12

-(x-3y=4)

3x+5y=12

3(-x+3y=-4)

3x+5y=12

-3x+9y=-12

14y=0

y=0

Then, substitute the y into the equation to find x

x-3(0)=4

x=4

7 0

2 years ago

Who knows how to answer this. It's Dividing complex numbers.

Elodia [21]

Answer:

answe is 1+i

mark this as brainliest!!

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4 0

3 years ago

Read 2 more answers

3(4-5i) Simplify the expression with complex numbers

strojnjashka [21]

3(4 -5i)

Multiply out

3*4 - 3*5i

12 -15i

Hope this helps.

7 0

2 years ago

.The expressions 25x - (6x + 12) and (25x - 6x) + 12 are

Kay [80]

Answer:

O equivalent by the associative property of addition

Step-by-step explanation:

Associative Property = a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result

Which means that you can change the expression 25x - (6x+12) without changing the answer. So, the changed result would be (25x-6x) + 12.

5 0

2 years ago

Read 2 more answers

Three shoppers from the survey are selected at random, one at a time without replacement. What is the probability that none of t

Travka [436]

Answer:

0.395

Step-by-step explanation:

The computation of the probability that none of the three shoppers purchased electronics is shown below:

So, first we have to determine the number of shoppers without considering the purchase i.e

= Total number of shoppers - electronics

where,

Total number of shoppers = Offices supplies + electronics + clothing + beauty supplies - electronics

= 18 + 25 + 40 + 12 - 25

= 95 - 25

= 70

Now the probability is

= $\frac{70}{95}\times\frac{69}{94}\times\frac{68}{93}$

= 0.395

5 0

3 years ago