Mathematics College

## Answers

**Answer 1**

**Answer:**

i think the answer is C, (-1 + 21) (i + 5i)

**Step-by-step explanation:**

i just took the test and got a 92% but it didnt tell me which ones were wrong. thats my best guess though. i hope it helps!

**Answer 2**

The **expression **demonstrates the use of the commutative property of addition in the first step of **simplifying **the expression as, (-1 + 21)+(i + 5i). Option** C** is correct.

What is an expression?

It is defined as the **combination **of constants and variables with mathematical operators.

It is given that the **expression **is, (–1 + i) + (21 + 5i)

We have to find the **expression **that demonstrates the use of the commutative property of **addition**

According to the **commutative property **of addition, altering the order of addends has no impact on the **sum**.

**Commutative law **refers to either of two rules pertaining to the addition and multiplication of numbers that are **expressed **symbolically as a + b = b + a and ab = ba. These **principles **imply that rearranging the terms or factors of any finite sum or **product **has no effect on it.

Thus, the **expression **demonstrates the use of the commutative property of addition in the first step of **simplifying **the expression as, (-1 + 21)+(i + 5i). Option** C** is correct.

Learn more about the **expression **here:

brainly.com/question/14083225

#SPJ6

## Related Questions

need help with box and whiskers plot pls ill give brainliest (answer all 4 questions if can)

### Answers

1. 10

2. 25

3. 40

4. 30

Please help!! Find the length of the radius of circle O.

### Answers

**Answer: 4.5 units**

**Step-by-step explanation:**

OD and OC are both radii of the circle O. All radii of the same circle are equal. Thus,

[tex]6x+2=10x-16[/tex]

18=4x

x=4.5

Hope it helps :)

Is (9w x 0) -12 and 9w -12 equivalent

### Answers

**Answer:**

no its not

**Step-by-step explanation:**

You would have to multiply 9w times -12 and 0 times -12 which does not equal the equation

A right cone has a slant height of 20 feet, and the diameter of the base is 24

feet. What is the height, h, of the cone?

20 ft

24 ft

A. 544

B. 12 ft

c. 256 ft

D. 16 ft

### Answers

**Answer:**

D. 16 ft

**Step-by-step explanation:**

h = √20² - (24/2)² = √400-144 = √256 = 16

A quality control inspector has drawn a sample of 19 light bulbs from a recent production lot. If the number of defective bulbs is 1 or less, the lot passes inspection. Suppose 30% of the bulbs in the lot are defective. What is the probability that the lot will pass inspection

### Answers

Answer:

0.0016283

Step-by-step explanation:

Given that:

Proportion of defective bulbs, p = 30% = 0.3

Sample size, n = 19 bulbs

Probability that the lot will pass inspection :

P(none of the 19 is defective) Or P(only one of the 19 is defective)

P(none of the 19 is defective) = (1 - p) ^n = (1 - 0.3)^19 ; 0.7^19

0.7^19 = 0.0011398

P(only one of the 19 is defective) :

P(1 defective) * P(18 not defective )

(0.3) * (1 - 0.3)^18

0.3 * 0.7^18

0.3 * 0.001628413597910449 = 0.0004885

Hence,

P(none of the 19 is defective) + P(only one of the 19 is defective)

0.0011398 + 0.0004885) = 0.0016283

Help me please! I am having difficulties

### Answers

**Answer**

**300**

**Step-by-step explanation:**

1. George's gross pay was $565. If he has to pay 1.45% to Medicare tax, how much will the Medicare tax deduction be?

o

$8.19

$5.45

$819.25

$0.81

### Answers

**Answer: $8.19**

**Step-by-step explanation: Times 565 by 1.45% and that's what you get.**

**Answer:**

The answer is $8.19

**Step-by-step explanation:**

Cost of shoes $29.95

Markup: 20%

What is the new cost?

### Answers

New cost = original price x (1 + markup)

New cost = 29.95 x ( 1 + 0.20)

New cost = $35.94

I think the answer is 35.94

how do i get rid of the stupld

### Answers

**Answer:**

wdym get rid of the "stupld"

**Step-by-step explanation:**

**Answer:**

**Study, ask teachers questions, email, use this app, etc.**

**Step-by-step explanation:**

If you study for a test/exam. Look over the study guide and recite it for 20 minutes and take a 10 minute break. Then pretend you're explaining the subject to someone for 20 minutes and take a 10 minute break. Then go over the study guide again and see if you missed anything while explaining and then explain it again but this time with the things you missed. Repeat if necessary. Flashcards on quizlet n stuff can help too.

3/4 of a number is what percent? Help ASAP pls

### Answers

**Answer:**

75%

**Step-by-step explanation:**

1/4 is 25

2/4 is 50

3/4 is 75

4/4 is 100

**Answer:**

75%

**Step-by-step explanation:**

3/4 is 0.75

0.75×100 is 75%

I HOPE IT HELPS

how how do you solve this please explain

### Answers

**Answer:**

1. have se x

**Step-by-step explanation:**

**Answer:**

x = 36

**Step-by-step explanation:**

(3x + 10) + 62 = 180

3x = 180 - 62 - 10 = 108

x = 36

can someone help

please dont put garbage answers :(

### Answers

**Answer:**

the first one

**Step-by-step explanation:**

Please mark me brainliest. Something like that

What is the length of side EF in the triangle? Please give a step by step explanation, I'm having lots of trouble finding the solution. Thank you!

### Answers

**Answer:**

EF = 8.8 cm

**Step-by-step explanation:**

In the given right angled ΔDEF, DE is the hypotenuse while EF and DF are adjacent sides. So that applying the Pythagoras theorem, we have;

[tex]/hyp/^{2}[/tex] = [tex]/adj1/^{2}[/tex] + [tex]/adj2/^{2}[/tex]

[tex]/DE/^{2}[/tex] = [tex]/EF/^{2}[/tex] + [tex]/DF/^{2}[/tex]

[tex]/16.2/^{2}[/tex] = [tex]/EF/^{2}[/tex] + [tex]/13.6/^{2}[/tex]

262.44 = [tex]/EF/^{2}[/tex] + 184.96

[tex]/EF/^{2}[/tex] = 262.44 - 184.96

= 77.48

EF = [tex]\sqrt{77.48}[/tex]

= 8.8023

EF = 8.8 cm

The length of side EF is 8.8 cm.

Which point represents the fourth bus stop

A. (11,8)

B. (13,12)

C. (15,10)

D. (19,12)

### Answers

**Answer:**

The answer is (19,12)

The Earth takes 24 hours to rotate around its own axis and the moon takes 27 days. What is the ratio of the time taken by the moon to the time taken by the Earth to rotate around their respective axes? help plsss

### Answers

**Answer:**

mmhhhhh Im an idiot that does not know how to answer questions just like you.

**Step-by-step explanation:**

can someone explain because im confused

### Answers

**Answer:**

I'm pretty sure it is yes

**Step-by-step explanation:**

7/1=7. 14/2=7. 21/3=7. 28/4=7. 35/5=7.

The triangle is rotated 90 degrees clockwise around the pount (0,0)

### Answers

**Answer:**

(2,6)

**Step-by-step explanation:**

Option:B

The triangle is rotated 90 degree clockwise around the point (0,0). The point is (-6,2) is made to rotate. The image so formed is at the point (2,6).

A juice shop needed 360 oranges to make 40 L of fresh-squeezed juice.

How many oranges would be needed to make 60 L of fresh-squeezed juice?

380 oranges

400 oranges

460 oranges

540 oranges

### Answers

**Answer:**

Using direct proportion

40L was made from 360 oranges

1 L will have been made from (360/40) oranges = 9 oranges

60L will then be made from : 60 * 9 oranges = 540 oranges.

D.

**Step-by-step explanation:**

**Answer:**

D. 540

**Step-by-step explanation:**

✔

How many 1/ 3 pound hamburger patties can be made from 4 pounds of ground beef?

### Answers

**Answer:4**

**Step-by-step explanation:**

**Answer:**

12

**Step-by-step explanation:**

Each pound is equal to 3 of the 1/3 pound patties

multiply 3 by 4 and you get 12.

answer ??????????????????

### Answers

**Answer:**

The answer is 5x

**Step-by-step explanation:**

Pls help as fast as u can

### Answers

**Answer:**

**Step-by-step explanation:**

a)4.67

b) 2.27

do you not have a calculator? :/

**Answer:**

a. $2.2

b. $2.2

**Step-by-step explanation:**

Not completely sure if it's right for part b, but 100% sure my answer for part a is right.

Factor this polynomial completely.

x^2-8x+16

A. (x-4) (x-4)

B. (x+4) (x+4)

C. (x-4) (x+4)

D. Does not factor

### Answers

**Answer:**

(x-4) (x-4)

**Step-by-step explanation:**

foil [first, outside, inside, last]

x^2 -8x = 16

(x-4) (x-4) = x^2 -4x -4x +16 = x^2 -8x +16

Answer: (x-4) (x-4)

Step-by-step explanation:

I have done this before!

Help me out, if right get brainlest

### Answers

**Answer:**

PQN≈STR

**Step-by-step explanation:**

What is (-6,3) reflected across the x axis

### Answers

Answer:

The new coordinates are (-6,-3) inside the third quadrant!!!!

Please help me solve this

### Answers

**Answer:**

60

**Step-by-step explanation:**

Set up an algebraic equation

360= 2a+ 2a+ a + a

360= 6a

60= a

Since the sum of the angles is 360, they can be added together.

.is BLANK

than

is fewer

than

3 < 5

### Answers

**Answer:**

I do not know what you just said so I assume your asking if 3 is less than 5 and yes 3 is less than 5

is this right I'm am super confused please help the picture is what I'm saying if you don't under stand

### Answers

**Answer:**

No

**Step-by-step explanation:**

20/10 = 2/1 (divide top and bottom by 2)

15/30 simplifies to 1/2

(divide top and bottom by 15)

Please help.. Please. Is this a positive trend or negative trend or no trend

### Answers

**Answer:**

it's a no trend cause its literally nothing but dots

Please help me solve

### Answers

9514 1404 393

**Answer:**

see attached

**Step-by-step explanation:**

Polynomial long division is done using the same methods as for numerical long division. Each quotient term is multiplied by the divisor, and that product subtracted from the dividend to get the new dividend. You are done when the degree of the dividend is less than the degree of the divisor.

As with numbers, 0 is put where a placeholder is needed. Here, that is needed for the (missing) x^2 term in the dividend.

As with numbers, the remainder is expressed as a fraction using the divisor as the denominator.

The full quotient is 4x^2 +2x +11/4 +37/(8x-4).

FREE BRAINLIEST

Write an equation of the line with the given conditions.

(-3,4), (1,12)

### Answers

**Answer:**

-3(4)÷12-1

**Step-by-step explanation:**

thank you so much i appreciate it .