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djverab [1.8K]
3 years ago
8

Simplify the expression. (5+i)(2-7i)

Mathematics
1 answer:
scZoUnD [109]3 years ago
5 0

Answer:

17-33i

Step-by-step explanation:

Multiply using the foil method than combined the real and imaginary parts of the expression

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Jeff and Kevin went to the fair with $20 each. They paid $6 for two rides, $2 for cotton candy, and bought two drinks at $3 each
Dvinal [7]

Answer:

Step-by-step explanation:

$40 - $6 - $2 - $6 = $40 - $14 = $26

6 0
3 years ago
Write the decimal shown by this point:+00 +10
const2013 [10]

When you count the small lines in between 8 and 9, there are 8 lines

The difference between 8 and 9 is 1

Divide 1 by 8, you will have 0.125

This implies each small lines represent 0.125

When you count from 8 to where the point is, we have 6 small lines

Multiply the 6 by 0.125, we will have 0.75

8 + 0.75 = 8.75

The decimal is 8.75

5 0
1 year ago
What does x equal in 2x-5
Umnica [9.8K]

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Step-by-step explanation:

8 0
3 years ago
9. Tony bought x boxes of cookies to bring to a party. Each box has 28 cookies. He decides
n200080 [17]

The correct answer is C. 28x – 56 = 84

Explanation:

Writing an equation using a description or situation involves including all the factors mentioned and relating these appropriately through mathematical symbols. In the case presented, the correct equation is 56 – 28x = 84. This is because this equation includes the total of boxes Tony took to the party 84 and this has been correctly included after the symbol =. Also, the total of boxes is equal to the boxes tony bought each with 28 cookies, which can be represented as 28x (x represents the value of boxes that multiplied by 28 leads to the total of cookies) minus the cookies Tony bought (2 boxes each with 28 cookies). This makes the final equation to be 28x – 56 = 84.

5 0
3 years ago
36 students signed up to volunteer for a race two or three equal groups of students and each group had a different task how many
Delvig [45]

Answer:

I two groups are formed: 18 students

If 3 groups are formed: 12 students

Step-by-step explanation:

We will answer this problem based on two occurrences:

<em>1. The students chose to form only two groups:</em>

If the students chose to form only two groups, the number of students in each group will be got by dividing the total number of students by 2. this will be 36/2 = 18. Therefore, there will be 18 students per group if only 2 groups were formed.

<em>2. The students chose to form three groups:</em>

If the students chose to form three groups, we will divide the total number of students by 3. this will be 36/3 = 12. Therefore, there will be 12 students per group if only 3 groups were formed.

3 0
3 years ago
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