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3 years ago

I need help ASAP please help me

Mathematics

1 answer:

Schach [20]3 years ago

5 0

Cant see the letters that good !

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Jacob is a salesperson who sells computers at an electronics store. He makes a base pay amount each day and then is paid a commi

krok68 [10]

Answer:

Step-by-step explanation:

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3 years ago

What method would you use to square the value 3 + √-1 ? In what other cases would you use this method? Explain.

galina1969 [7]

Answer:

1) the types of number are the negative integers (e.g √-1 √-3 √-5 are not defined)

2) the answer is No, proof: 2x√-1 is not defined because √-1 doesn't exist

3) the answer is No, proof: √-1 - 3 is not defined because √-1 doesn't exist

4) the answer is Yes, proof: (√-1 )²= -1 this is a real number

5) the answer is No, proof: (√-1 )^3= (√-1 )²(√-1 )= - 1(√-1 ), and - 1(√-1 ) is not defined because √-1 doesn't exist

6) the result would be defined with the following cases:

√-1+n, n>1

√-1xn, n<0

√-1/n, n<0

7) the result would not be defined with the following cases:

√-1+n, n<0

√-1xn, n>0

√-1/n, n>0

8) to square 3 + √-1, I use the method of complex number

i²= -1, it implies i= √-1

so 3+√-1=3+i, and then (3+√-1)²=(3+i)²= 9 -1+6i= 8-i= 8-√-1

9) it is used for finding complex roots of a number

Step-by-step explanation:

6 0

3 years ago

The combined age of three relatives is 120 years. James is three times the age of Dan, and Paul is two times the sum of the ages

d1i1m1o1n [39]

Answer:

Step-by-step explanation:

From the problem statement, we can create the following equation:

$J + P + D = 120$

where $J$ is the age of James, $P$ is the age of Paul, and $D$ is the age of Dan.

From the first part of the second sentence, we can set up the following equation:

$J = 3D$

From the last part of the second sentence, we can set up the following equation:

$P = 2(J + D)$

We can substitute the second equation into the last one to get the following:

$P = 2(3D + D)$

$P = 2(4D)$

$P = 8D$

We can then substitute the last two equations in the first to solve for $D$ :

$3D + 8D + D = 120$

$12D = 120$

$D = 10$

Plugging this into the other two equations will give us the remaining ages:

$P = 8D$

$P = 8(10)$

$P = 80$

$J = 3D$

$J = 3(10)$

$J = 30$

8 0

3 years ago

Anna divided a sheet of paper into 5 equal sections and colored 3 sections blue . What percent is that and it =60

Dimas [21]

Answer:

she colored in 60% of the paper blue and left 40% of the paper blank

Step-by-step explanation:

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3 years ago

A pigeon can fly at a speed of 84 kilometers per hour. How long does it take the pigeon to fly 7 kilometers?

Serhud [2]

The pigeon can fly 7 kilometers in around 8-9 minutes

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3 years ago