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3 years ago

Shoes: $59.97, Shirt: $10.99, Pants: $19.99 Calculate the subtotal.

Mathematics

2 answers:

Lesechka [4]3 years ago

6 0

Answer:

90.95

Step-by-step explanation:

Leto [7]3 years ago

5 0

Answer:

If you add it all up, your answer is $90.95

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Three of these expressions give the distance between points A and B on the number line. Which expression does NOT?

NARA [144]

answer: was willing to help but you should’ve added a picture or added the choices there was to pick from because there isn’t much info.

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3 years ago

Why can it help to line up the decimal points before comparing and ordering numbers with decimals

aliina [53]

So you don't loose your place

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3 years ago

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Help Look at image!!

faust18 [17]

Answer:

3/4

Step-by-step explanation:

Use the rise over run equation

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3 years ago

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Number 1 and 2 please (25 points)

Elenna [48]

Answers:

1) $(3x+2)+(4-5x)=-2x+6$

$(3+2i)+(4-5i)=7-3i$

2) $(1-3x)(2+x)=-3x^{2}-5x+2$

$(1-3i)+(2+i)=5-5i$

Step-by-step explanation:

In mathematics there are rules related to complex numbers, specifically in the case of addition and multiplication:

<u>Addition: </u>

If we have two complex numbers written in their binomial form, the sum of both will be a complex number whose real part is the sum of the real parts and whose imaginary part is the sum of the imaginary parts (similarly as the sum of two binomials).

For example, the addition of these two binomials is:

$(3x+2)+(4-5x)=3x-5x+2+4=-2x+6$

Similarly, the addition of two complex numbers is:

$(3+2i)+(4-5i)=3+4+2i-5i=7-3i$ Here the complex part is the number with the $i$

<u>Multiplication: </u>

If we have two complex numbers written in their binomial form, the multiplication of both will be the same as the multiplication (product) of two binomials, taking into account that $i^{2}=-1$ .

For example, the multiplication of these two binomials is:

$(1-3x)(2+x)=2+x-6x-3x^{2}=-3x^{2}-5x+2$

Similarly, the multiplication of two complex numbers is:

$(1-3i)+(2+i)=2+i-6i-3i^{2}=2-5i-3(-1)=5-5i$

8 0

4 years ago

Can someone help me dividing fractions: 2/10%1/2 with procces

sleet_krkn [62]

First off, 2/10 can be simplified. 2 divided by 2 is 1. So the numerator is 1. 10divided by 2 is 5. Denominator is 5. So right now your first fraction is 2/5. 2/5 divided by 1/2. First, you keep your first fraction. You switch the division sign to multiplication, and always do the reciprocal (flip it around) of the second fraction. So instead of 1/2, it would be 2/1. Then multiply. 2/5 x 2/1. 2x2 is 4, 5x1 is 5. 4- numerator/5-denominator. Your answer is 4/5.

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3 years ago