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4 years ago

NEED HELP PLEASE!!! Explain the answer! Will give brainliest!

Mathematics

1 answer:

Mrac [35]4 years ago

4 0

A= 8.55 X 10/-5 and B= 8.55 x 10/6

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Is 3.14 a Rational, Whole Number, Integer, or Irrational number?

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the answer is a rational number

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3 years ago

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Step-by-step explanation:

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3 years ago

Carla and Benicio work in a men's clothing store. They earn commission from each suit and each pair of shows they sell. For sell

qwelly [4]

Answer:

The salespeople earn for the sale of a suit = $13.

The salespeople earn for the sale of a pair of shoes = $8.

Step-by-step explanation:

Let x be the commission for each suit and y be commission for each pair of shoes.

We have been given that for selling 3 suits and one pair of shoes, Carla has earned $47 in commission. We can represent this information as:

$3x+y=47...(1)$

We are also told that for selling 7 suits and 2 pairs of shoes, Benicio has earned $107 in commission. We can represent this information as:

$7x+2y=107...(2)$

We will use substitution method to solve our system of linear equations. From equation (1) we will get,

$y=47-3x$

Substituting this value in equation (2) we will get,

$7x+2(47-3x)=107$

$7x+94-6x=107$

Upon combining like terms we will get,

$7x-6x=107-94$

$x=13$

Therefore, the salespeople earn $13 for the sale of a suit.

Let us substitute x=13 in equation (1).

$3*13+y=47$

$39+y=47$

$y=47-39$

$y=8$

Therefore, the salespeople earn $8 for the sale of a pair of shoes.

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4 years ago

Simplify the expression the root of negative one all over the quantity of four minus three i minus the quantity of two plus five

svlad2 [7]

We will break this down into its parts:
We know that this is a fraction where the numerator is √(-1) = i
The denominator:
4 - 3i - (2 + 5i); we put 2 + 5i in brackets because we are to subtract its quantity.
Simplifying the denominator:
4 - 3i - 2 - 5i
= 2 - 8i
Now, we write the expression in fractional form:
i / (2 - 8i)
To remove an imaginary number from the denominator, we multiply and divide by its conjugate. The conjugate of a + bi is a - bi
i(2 + 8i) / (2² - (8i)²)
= (-8 + 2i) / (4 + 64)
= -2/17 + i/34

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4 years ago

If X = {−1, 0, 2} and Y = {1, 2, 5}, find X ∪ Y.

Irina18 [472]

yo sup??

as mentioned earlier XUY is simply the summation of all the unique elements of X and Y

S=XUY

={-1,0,1,2,5}

Therefore your answer is option 1 ie

1.{-1,0,1,2,5}

Hope this helps.

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4 years ago

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