Mathematics College

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

Answers

Answer 1

Answer:

17-33i

Step-by-step explanation:

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

Related Questions

Could someone please help with this math problem??!

Answers

I agree with this person that will be a good use

a school has 2 large patios. one is rectangular and is 24 feet long by 18 feet wide. The other is square and each side is 21 feet long. Which patio has a greater area?

Answers

Answer:

The 21' by 21' square patio is larger by 9 square feet

Step-by-step explanation:

[tex]24 \times 18 = 432[/tex]

[tex] {21}^{2} = 441[/tex]

The square patio will have more area than the rectangular one.

What is an area?

The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the rectangle in a two-dimensional plane is called the area of the rectangle.

Given that the school has 2 large patios. one is rectangular and is 24 feet long by 18 feet wide. The other is square and each side is 21 feet long.

The area of the rectangle is calculated as,

Area = L x W

Area = 24 x 18

Area = 432 square feet

The area of the square is calculated as,

Area = S²

Area = (21)²

Area = 441 square feet

The area of the square is greater than the area of the rectangle.

To know more about an area follow

https://brainly.com/question/25292087

#SPJ5

A SURVEY OF 1,000 PEOPLE WAS DONE BY NEW YORK TIMES. 90% OF THE PEOPLE
DID NOT KNOW THE NAME OF THEIR REPRESENTATIVE IN CONGRESS. HOW MANY
OF THE 1,000 PEOPLE KNEW THE NAME OF THE CONGRESSMAN?
Step by step explains I need to show my work !

Answers

Answer:

100 people

Step-by-step explanation:

first we gotta find 90% of 1000 to do that we multiply 1,000×90% or 1000×0.90 (same thing)

this equals 900 so 900 people don't know the name of their rep in congress subtract 1000-900 thus 100 ppl know there rep in congress

Answer:

100 people did know they're representative

Step-by-step explanation:

You just have to scale up the problem for example 10% of 100 is 10 but 10% of 1,000 is 100(If you need me to be more clear please let me know)

i think i know this but still not sure if i am right

Answers

Answer:

School Sucks!

Step-by-step explanation:

Half of this stuff you will never use in real life!

Balu and Pumba shared ½ of a cake. Balu got to eat twice as much cake as Pumba. What fraction of the whole cake did Balu eat?

Answers

Answer: 1/3

Step-by-step explanation:

Answer:

2/6

Step-by-step explanation:

2/6 + 1/6 = 3/6 which is 1/2 2/6 is the amount balu had and 1/6 is the amount pumba had

2+3/4x=5/12
Rewrite the equation so that it does not have any fractions

Answers

Answer:

24+9x=5

Step-by-step explanation:

First you need to find the least common multiple of the denominators of the fractions. In this case, it would be 12. Then, multiply the entire equation by this number.

2*12=24,

3/4*12=36/4=9,

5/12*12=60/12=5.

Using these values will give your final equation: 24+9x=5

Answer:
24+9x=5

Explanation:
To remove the fractional values, we need to multiply both sides of the equation by their denominators so they get canceled out.

2+3/4x=5/12
1) Multiply both sides of the equation by 4 since it is the denominator of 3/4
8+3x=20/12
2) Simplify the fraction 20/12
8+3x=5/3
3) Multiply both sides of the equation by 3 since it is the denominator of 5/3
24+9x=5

I hope this helps! Please comment if you have any questions.

Solve for b. 4b-3b+7= 10

Answers

b = 3

Step-by-step explanation:

[tex]4b - 3b + 7 = 10[/tex]

Add similar terms :

[tex]4b - 3b = b \\ b + 7 = 10[/tex]

Collect like terms and simplify

[tex]b = 10 - 7 \\ b = 3[/tex]

Answer:

b=3 if i did it correctly. i apologize if it's wrong.



Which function describes the graph?
2
y= 5x+1
c.
2
y = 5x-1
b.
2
d.
2
y=5x+1
y=54-1

Answers

Answer: A

Step-by-step explanation:

The y intercept is positive 1, so it’s not C or D

The slope is positive because it’s going up from left to right so it’s not B

find solutions to the linear equation y=−10x+30.

Answers

Answer: x=-y-30/10

1) subtract 30 from both sides

y−30=−10x

2) divide both sides by -10

-y-30/10=x

3) switch sides

x=-y-30/10

purchased $2,300 worth of supplies on account. Prior to the purchase, the balance in the supplies account was $350. On December 31, the fiscal year-end for Unidevo, it is determined that $500 of supplies still remain. What is the balance in the supplies account after adjustment?

Answers

Answer:

$500

Step-by-step explanation:

What P:X equals 4 let q:y equals -2 which represents if x = 4 then y = -2

Answers are as followed
A. p V q
B. p V q
C. p -> q
D. p q

Answers

Answer:

p - > q is a = 4 then y = 3 equals

I WILL GIVE EXTRA POINTS AND BRAINLIEST HELPPP PLEASE!!!! SHOW ALL WORK!!!
Solve All 4

Answers

Answer:

#23 is x+27°=27

2x-17°=-17

#24 is x+23°=23

x+54°=54

#25 is x+79°=79

2x-37°=-37

#26 is 3x+71°=71

5x+37°=37

Step-by-step explanation:

how you ask because when it is like x+55° and 6x+88° that means its going to be a positive number.

but when it is like 5x-78° that means its going to be a negative number.

remember this +=positive and -=negative

hope this helped you out!

trevor reads 5 pages of a novel in 18 minutes how long would it take him to read 125 pages

Answers

Answer:

I believe that the answer is 450 minutes

Step-by-step explanation:

125 divided by 5=25

25 times 18=450

A survey showed that 24 out of 60 people preferred vanilla-flavored ice cream. According to this survey, what percent of the people prefer vanilla-flavored ice cream?

A. 2.5%
B. 4%
C. 25%
D. 40%

Answers

Answer:

D. 40%

I THINK

You do 24/60 and simplify

Answer:

D. 40%

Step-by-step explanation:

I just had a Quiz and got this right!

SOMEONE THAT KNOWS PRE CALCULUS I NEED HELP ON THESE QUESTIONS
(Please don't leave stupid answers to take my points this is my third time asking for help on these and everyone just takes my points so please)

Answers

Answer:

Step-by-step explanation:

answers= 12/5, 5/13, -13/12, 13/5, -12/13

Hope this was right, this is how my professor explained it at my school so tell me if I am wrong :)

Answer: -5/12, 5/13

Step-by-step explanation:

How many seconds equal 9 hours and 23 minutes?
w
563 seconds
1,380 seconds
33,780 seconds
12.420 seconds

Answers

Answer:

33780 seconds

Step-by-step explanation:

Answer:

33,780

Step-by-step explanation:

14x + 7 y=-7
y=-2x-1​

Answers

Answer:

(x, y) = ( -1, 1)

- -

9 9

Hope this helps for you answer :)

Plz help with this I don’t really get it

Answers

Answer:

D

Step-by-step explanation:

Associative Property of Multiplication is a(bc) = (ab)c

d is the only one that follows the rule

i’ll mark brainliest!!

Answers

The answer is 50

Hope this helps!

HURRY !!!Below are two tables that represent a class of students. 2 tables. Table 1 is a 2-column table with 3 rows. Column 1 has entries boys, girls, total. Column 2 has entries 19, 16, 35. Table 2 is a 2-column table with 3 rows. Column 1 has entries summer birthdays, other birthdays, total. Column 2 has entries 11, 24, 35. Based on these tables, what can you determine about the students in this class? Check all that apply. There are 35 students in the class. 11 of the students are boys who have summer birthdays. 19 of the students are boys. There is not enough information shown to determine how many girls have summer birthdays.

Answers

Answer:

the answer is 1 3 and 4

hope i helped

Answer:

A C D

Step-by-step explanation:

Circle YES or NO The terms 15and 9are like terms.

Circle YES or NO The terms -10xy and 9x are like terms.

Answers

Answer:

yes, and no

Step-by-step explanation:

Answer:

YES

NO

Step-by-step explanation:

15 and 9 are like terms because they can be simplified together. 15+9, 15-9, 15*9 can all be simplified further.

-10xy and 9x are not like terms because they cannot be simplified without the variables first being defined.

4. What is an equation of the line that passes through the point (3.-1) and has a slope of 2? 1) y = 2x + 5 3) y = 2x - 4 2) y = 2x-1 4) y = 2x - 7​

Answers

Answer:

it's 4

Step-by-step explanation:

y - y1= m(x- x1)

y- (-1)= 2(x - 3)

y+ 1= 2x- 6

y= 2x - 7

8,595 ÷ 24 answer please

Answers

Answer:

358.125

Step-by-step explanation:

8595/24=258.125

Hello, can anyone please help me with this question. I need to get at least these last two questions right so please I would really appreciate this correct answer! Thang you.

Answers

Answer:

B (same slope, lower starting point)

Step-by-step explanation:

The slope on this graph is 5, and the slope of y=5x+5 is 5, so the slopes are the same.

This graph has a y-intercept of -6, which is lower than y=5x+5's intercept of 5, so it starts lower, so B.

What is 1 over 4 multiplied by 7 over 2

Answers

Answer:

7/8

Step-by-step explanation:

Answer:

1/4 x 7/2

First, let's convert each fraction into percentages.

1/4= 25%

7/2= 350%

Now just multiply them together.

25x350= 8750

Convert it back into a fraction.

8750% = 175/2 = 871/2 as a fraction.

Hope this helps!

Help me, please!! Find the value of g

Answers

Answer:

  -16

Step-by-step explanation:

Multiply both sides of the equation by 4/3.

  [tex]\dfrac{3}{4}g=-12\\\\\dfrac{4}{3}\cdot\dfrac{3}{4}g=-12\cdot\dfrac{4}{3}\\\\g=-\dfrac{48}{3}\\\\\boxed{g=-16}[/tex]

find the slope of the line through each pair of points

Answers

Answer: ...

Step-by-step explanation:

Answer:

5. Undefined

6. Zero

7. Positive

8. Negative

Step-by-step explanation:

i would recommend this website called demos it is really helpful to figure how graphs like this looks and such :)

Number 5 question canvas

Answers

It’s the first answer choice

Which expression has the same value as the one below?
50 + (-17)

Answers

Answer:

33

Step-by-step explanation:

Simplify the expression.

Answer:

-17+50

Step-by-step explanation:

It is the same equation, just written backward. They both equal 33.

What is the constant of proportionality?
Time (min)
1
2
3
Number of Texts
3
6.
9
12

Answers

Answer:

y=x3

Step-by-step explanation:

x=time minutes

y= texts

i hope i'm correct

plz mark brainliest

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