Please help me with this!! (20 points)

Answer:

41

Step-by-step explanation:

Simplify the following:

(5 i + 4) (-5 i + 4)

Hint: | Multiply 4 + 5 i and 4 - 5 i together using FOIL.

(4 + 5 i) (4 - 5 i) = (4) (4) + (4) (-5 i) + (5 i) (4) + (5 i) (-5 i):

4×4 + 4 (-5 i) + 5 i×4 + 5 i (-5 i)

Hint: | Multiply 4 and 4 together.

4×4 = 16:

16 - 5×4 i + 5 i×4 + 5 i (-5)×i

Hint: | Multiply 4 and -5 together.

4 (-5) = -20:

16 + -20 i + 5 i×4 + 5 i (-5)×i

Hint: | Multiply 5 and 4 together.

5×4 = 20:

16 - 20 i + 20 i + 5 i (-5)×i

Hint: | Combine products of like terms.

5 i (-5)×i = 5 i^2 (-5):

16 - 20 i + 20 i + -5×5 i^2

Hint: | Evaluate i^2.

i^2 = -1:

16 - 20 i + 20 i - 5×5×-1

Hint: | Multiply 5 and -1 together.

5 (-1) = -5:

16 - 20 i + 20 i - 5-5

Hint: | Multiply -5 and -5 together.

-5 (-5) = 25:

16 - 20 i + 20 i + 25

Hint: | Evaluate 16 - 20 i + 20 i + 25.

16 - 20 i + 20 i + 25 = 41:

Answer:  41

Answer:

Cant give as good of as answer like the other person but it is 41!

Step-by-step explanation:

Answer:

[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{x = \frac{2}{45} }}}}}[/tex]

Step-by-step explanation:

[tex] \sf{ - 5 = \frac{ - 2}{9x} }[/tex]

Apply cross product property

[tex] \dashrightarrow{ \sf{ - 5 \times 9x = - 2}}[/tex]

[tex] \dashrightarrow{ \sf{ - 45x = - 2}}[/tex]

Divide both sides by -45

[tex] \dashrightarrow{ \sf{ \frac{ - 45x}{ - 45} = \frac{ - 2}{ - 45} }}[/tex]

[tex] \dashrightarrow{ \sf{x = \frac{2}{45} }}[/tex]

Hope I helped!

Best regards! :D

Answer:

14%

Step-by-step explanation:

Last year's score = 350

This year's score = 399

What was the percent of increase in Kenia's score

Percentage increase= (new score - old score) / old score × 100

= (399-350) / 350 × 100

= 49 / 350 × 100

= 0.14 × 100

= 14%

The percent of increase in Kenia's score is 14%

Answer:

a. ¼

(Below is the Screenshot on EdgeCourseware)

1/4 must be added to the given expression to make it a perfect-square trinomial.

The given expression is x²+x.

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

Add 1/4 to the given expression, we get

x²+x+1/4

= x²+x+(1/2)²

= (x+1/2)²

Verification:

x²+2.x.1/2+1/4

= x²+x+1/4

Therefore, 1/4 must be added to the given expression to make it a perfect-square trinomial.

To learn more about an expression visit:

https://brainly.com/question/14083225.

#SPJ2

Answer:

180-38=142 the other angle is 142

Step-by-step explanation:

Answer:

Step-by-step explanation:

The sum of suplementary angles is allways 180°

so:

x  -   the other angle

3x  - three times the other angle

180°- x  - one angle

180° - x + 184° = 3x

   364° = 4x

     x = 91°

180°- x = 180° - 91° = 89°

Answer:

if you were solving for X the answer would be x < 3

Step-by-step explanation:

Answer:

418 4/10

Step-by-step explanation:

To answer this we subtract 450 7/10 from 869 1/10.

We must borrow a '1' from 869 1/10:  868 11/10

Now subtract 450 7/10 from 868 11/10:

418 4/10 (CHANGE IN ELEVATION)

This reduces to 418 2/5.

Answer:

none are a solution

Step-by-step explanation:

9. 2=2·3             10. 6=2·-1         11.-14=2·-1.5

2=6                     6=-2                  -14=-3

WRONG             WRONG           WRONG

(3,2)                     (-1,6)                  (1.5,-14)

Given equation:y=2x+4

Step-by-step explanation:

A logarithm is a mathematical operation that determines how many times a certain number, called the base, is multiplied by itself to reach another number. ... Logarithms even describe how humans instinctively think about numbers.

Answer:

A logarithm tells what exponent (or power) is needed to make a certain number, so logarithms are the inverse (opposite) of exponentiation. Just as an exponential function has three parts, a logarithm has three parts. The three parts of a logarithm are a base, an argument (also called power) and an answer.

Step-by-step explanation:

Answer:

C'(2, 1 )

Step-by-step explanation:

Assuming the dilatation is centred at the origin then multiply the coordinates of C by [tex]\frac{1}{3}[/tex] , that is

C(6, 3 ) → C'( [tex]\frac{1}{3}[/tex] (6), [tex]\frac{1}{3}[/tex] (3) ) → C'(2, 1 )

Step-by-step explanation:

no graphs included. need photos or words to answer.

Answer: Its B (FtG)(x)

Step-by-step explanation:

Answer:

1,2 and 5 are your right answers! Please vote Brainliest!

Step-by-step explanation:

Answer:

Step-by-step explanation:

9 + 4x = 52

4x = 43

x = 10.75

4(10.75) = 43

Answer:

3√2units or 4.24 units

Step-by-step explanation:

using the formula √∆x^2+∆y^2

√3^2+3^2

√18

= 3√2 or 4.24 units

Answer:

11.025 pounds are in 5kg

Ur answer is a ur welcome

Answer:

Hey there!

The tax paid on the meal is represented by 0.05m.

Let me know if this helps :)

Let's simplify step-by-step.

3x+2−4x−−2x

=3x+2+−4x+2x

Combine Like Terms:

=3x+2+−4x+2x

=(3x+−4x+2x)+(2)

=x+2

Answer:

=x+2

i hope this helps you

Answer:

100 meters

Step-by-step explanation:

Given the following :

Alex house = F

Alex school = H

Alex bus stop = G

FG = 2x meters

GH = 1000meters

FH = 1200 meters

Hence,

FH = FG + GH

1200 = (2x + 1000) meters

1200 = 2x + 1000

1200 - 1000 = 2x

200 = 2x

x = 100meters

Hence, x = 100 meters

Answer:

Step-by-step explanation:

RTLM+x=36

62 is the correct answer of this question

The value of 7 in 17.92 is in the ones place.

Answer:

.7<3-square-root 5<.8

Step-by-step explanation:

Answer:

option first cause

-2(y-5)= 3y+10-5y

-2y+10=-2y+10

Step-by-step explanation:

Answer:

communtive property of multiplication

Answer: commutative property ⚡

Step-by-step explanation

Answer:

x=8

Step-by-step explanation:

-x+2=-3x+18

=>-x+3x=18-2

=>2x=16

=>x=16/2

=>x=8

Answer:

6

Step-by-step explanation:

Unknown number = x

So,

x - 4 = 2 (add 4 to both sides)

x - 4 + 4 = 2 + 4

x = 6