Find the magnitude of -3i.A. 3iB. √3C.-3D. 3

Answers

Answer 1

Given:

\(-3i\)

Required:

To find the magnitude of a given number.

Explanation:

Consider

\(0-3i\)

The magnitude is

\(\begin{gathered} =\sqrt{0^2+(-3)^2} \\ \\ =\sqrt{9} \\ \\ =3 \end{gathered}\)

Final Answer:

The option D is correct.

\(3\)


Related Questions

What is a sentence where the sum is 0?

Answers

Answer:

1-1=0

1*0=0

I dont know if I'm right

The angle between A = (25 m)i +(45 m)j, and the positive e axis is

Answers

Therefore, the angle between vector A and the positive e axis (which is the positive x-axis) is 60.255°.

To find the angle between vector A = (25 m)i + (45 m)j and the positive e axis, we first need to find the direction of vector A.

We can find the direction of vector A by taking the arctangent of the y-component over the x-component of the vector:

θ = tan⁻¹ (y/x)

where θ is the angle between the vector and the positive x-axis.

In this case, the y-component of vector A is 45 m and the x-component is 25 m:

θ = tan⁻¹ (45/25) = 60.255°

Learn more about dot product here:

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simplify the inequality​

simplify the inequality

Answers

Answer:

2x + 4 > 14

2x > 10

x > 5

Answer:

C.x>5

Step-by-step explanation:

2x+4>14

2x>10

x>5

Hope this helps! :)

Choose an equivalent ratio. 4:9

A) 27:40
B) 27:18
C) 12:27
D) 16:27

Answers

Answer:

The answer is C.

Step-by-step explanation:

The answer is C because both numbers in 4:9 can be multiplied by the same factor (3) to get 12:27, the answer. No other choice works because they require two different number factors, not just one, which means they aren't equivalent ratios to 4:9.

a deli buys 40 pounds of salami for its famous grinder sandwiches. the salami is an example of___ goods.

Answers

40 pounds of salami are purchased by a deli for its renowned grinder sandwiches. An illustration of an intermediate good is salami.

Given fill-in-the-blank;

A deli buys 40 pounds of salami for its famous grinder sandwiches. the salami is an example of___ goods.

The answer for this case is Intermediate.

A deli buys 40 pounds of salami for its famous grinder sandwiches. the salami is an example of Intermediate goods.

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ASAP please help me I need this quick
The question and answers are in the picture

ASAP please help me I need this quick The question and answers are in the picture

Answers

Answer:

25

Step-by-step explanation:

maybe this will help you

Answer:

C. 125 cm^3

Step-by-step explanation:

Hope this helps!! Brainliest please :)

(SAT Prep) Find the value of x.

(SAT Prep) Find the value of x.

Answers

Answer: 36˚

Step-by-step explanation:

180 - 3x = 2x

180 = 5x

.: x = 36˚

(5+3√2)² simplify the following

Answers

Answer:

\((5+3\sqrt{2} )^{2} =43+30\sqrt{2}\)  

≈85.43

Step-by-step explanation:

apply the binomial theorem to the square

\(=(5)^{2} +2(5)(3\sqrt{2} )+(3\sqrt{2} )^{2}\)

\(=25+30\sqrt{2} +18\\\)

\(=43+30\sqrt{2}\)

≈85.43

Hope this helps

Hello!

Here, we apply the algebraic identity :

\(\boxed {(a + b)^{2} = a^{2} + 2ab + b^{2}}\)

Let's solve!

⇒ (5 + 3√2)²

⇒ (5)² + 2(5)(3√2) + (3√2)²

⇒ 25 + 30√2 + 18

⇒ \(\boxed {43 + 30\sqrt{2}}\)

∴ The final answer will be 43 + 30√2.

. If two of the angles in a scalene triangle are 54° and 87°, what is the other angle?

Answers

39 because 54+87=141 and now u have to subtract 141 from 180 so it gives u 39

The answer is:

⇨ x = 39°

Work/explanation:

Bear in mind that the sum of all the angles in a triangle is 180°.

Given two angles, we can easily find the third one.

Let's call it x.

Next, we set up an equation:

\(\sf{54+87+x=180}\)

\(\sf{141+x=180}\)

Subtract 141 on each side.

\(\sf{x=180-141}\)

\(\sf{x=39}\)

Hence, the other angle is 39°.

7+5m=48
What’s the answer

Answers

Answer:

41/5

Step-by-step explanation:

7+5m=48

5m=41

m=41/5

which one would it be?

which one would it be?

Answers

By AAS congruency the two triangles are congruent

If l || m, determine what type of angles they are and find the value of x.

If l || m, determine what type of angles they are and find the value of x.

Answers

If l || m than 8x+20=11x-31
3x=51
x=17
The angles are obtuse angles.

What is 576 times 36?

Answers

20,736

12345678912345678912462964





















-4,-1,2,5
What is the sequence

Answers

Answer:

-4,-1,2,5 if your going up in value and if your going down 5,2,-1,-4

Step-by-step explanation:

Answer:

The sequence is +3.

Step-by-step explanation:

Each number goes up by 3.

-1-(-4)=3

2-(-1)=3

5-2=3

Real-life Problems Question 10

Real-life Problems Question 10

Answers

Answer :

a) It is given that

Everyday a machine makes 500000 staples and puts them into the boxes.

The machine need 170 staples to fill a box

One box contans = 170 staples.

Total number of staples = 500000

Number of box required to fill 500000 staples = Total number of staples/No. of staples 1 box contains.

\( \: :\implies \) 500000 /170

\( :\implies \: \) 2941 (approx)

Therefore, 2941 boxes are required to fill with 500000 staples.

b) It is given that,

Each staple is made of 0.21 g of metal .

Total weight of metal = 1 kg = 1000 g

1 staple = 0.21 g

Number of staples = weight of metal/ Weight of 1 staple.

\( \: :\implies \) 1000/0.21

\( \: :\implies \) 4761 (approximately)

Therefore, 4761 staples can be made from 1 kg of the metal.

There are 4 Board of Directors positions open. 2 will be for men, 2 will be for women.
Out of 20 candidates, 11 are men, 9 are women. How many total outcomes are
possible?

Answers

Answer:

4290

Step-by-step explanation:

Lets find the total number of men and women .

9 women are out and 2 became the member of the Board=> total 11 women

11 men are out and 2 became the member of the Board=> total 13 men

11 women-candidates for 2 positions can make C11 2  outcomes =11!/(11-2)!/2

13 men-candidates for 2 positions can make C13 2 outcomes= 13!/(13-2)!/2

The total number of outcomes is C11 2 *C13 2 = 13!*11!/9!/11!/2/2=

10*11*12*13/2/2=11*13*5*6=4290 outcomes

The length of a rectangle is 5 inches less than twice its width. The perimeter of the rectangle is 26 inches. What is the width of the rectangle?​

Answers

Answer:

w= 6

Step-by-step explanation:

I just started by making an educated guess using the values already given. Then I inserted that into the problem to see if it worked.

L= 2w - 5

I used 6 as a random, educated guess for the value of w.

L = 2(6) - 5

L = 12-5

L = 7

Then, multiply L by 2 to account for both side lengths of the rectangle.

7(2)= 14

Subtract that value from the total perimeter to find what the width must equal.

26 - 14 = 12

Divide that answer by 2 since there are two sides for width.

12/2 = 6

I know this was kind of long, but I hope it helps! :)

Factorise Fully x^2 + x

Answers

Answer:

X(x+1)

Step-by-step explanation:

If it is wrong I'm sorry.

Question: "Estimate 8 x 572."

Answers

4580 or 4600 is the best answer I have gotten for this question

A tiled floor measures 1 ⅔ by 2 ⅔ feet. What is the area of the floor?

Answers

let's firstly convert the mixed fractions to improper fractions and then multiply.

\(\stackrel{mixed}{1\frac{2}{3}}\implies \cfrac{1\cdot 3+2}{3}\implies \stackrel{improper}{\cfrac{5}{3}}~\hfill \stackrel{mixed}{2\frac{2}{3}}\implies \cfrac{2\cdot 3+2}{3}\implies \stackrel{improper}{\cfrac{8}{3}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{5}{3}\cdot \cfrac{8}{3}\implies \cfrac{40}{9}\implies 4\frac{4}{9}\)

Determine which equation has the same solutions as the given equation.

x2 − 10x − 11 = 0

A.
(x − 10)2 = 36
B.
(x − 5)2 = 36
C.
(x − 5)2 = 21
D.
(x − 10)2 = 21

Answers

I just want to mention that the question is wrongly written!

it's meant to be  x² − 10x − 11 = 0 and not x2 − 10x − 11 = 0

and so the other equations!

Answer:

The answer is B: (x − 5)² = 36

Step-by-step explanation:

by solving the equations using the quadratic formula we found:

the solutions for x² − 10x − 11 = 0 | x = 11, -1

the solutions for A | x = 16, 4

the solutions for B | x = 11, -1

the solutions for C | x = \(\sqrt{21} +5\), \(-\sqrt{21}+5\)

the solutions for D | x = \(\sqrt{21}+10, -\sqrt{21}+10\)

the given equation: x² − 10x − 11 = 0 and the equation B: (x − 5)² = 36 have the same solutions

Therfore B is the correct answer

1) Solve for x
4x + 3 = 3x - 5
A) 8
C) -8
D) 2
B) -2

Answers

4x+3=3x-5
X= -8
C) -8

Question Evaluate the following expression. Round your answer to two decimal places. logo 8

Question Evaluate the following expression. Round your answer to two decimal places. logo 8

Answers

We are asked the following:

\(log_68\)

This means the logarithm in base 6 of 8. Therefore, we need to determine a number that is an exponent of "6" and the result is 8. This result can be determined using the appropriate technological tool. We would get:

\(log_68=1.16\)

Therefore, the value of the expression is 1.16.

combine like terms
\(y + 4 + 3(y + 2)\)
\(5x + 3(y + 4x)\)

Answers

Answer:

17x+7y+10

Step-by-step explanation:

y+4+3(y+2)

you have to multiply 3 by the numbers/variables in the parenthesis

y+4+3y+5

Do the same to the other equation

5x+3(y+4x)

5x+3y+12x

Set an equation that will let you add their like terms.

y+4+3y+5+5x+3y+12x

I'm going to add like terms with the y

y+3y+3y = 7y

Now like terms with x

5x+12x = 17x

Now put them all as a single equation

17x+7y+10

[-12] + [4] find the absolute value of each integer then add them

Answers

Hello there!

Answer:

16

Step-by-step explanation:

\( |x| = x \: \: \: if \: \: x \: \geqslant 0 \\ |x| = - x \: \: \: if \: \: \: x \: \leqslant 0\)

-12 < 0 so |-12| = -(-12) = 12

4 > 0 so |4| = 4

|-12| + |4| = 12 + 4 = 16

Answer:

16

Step-by-step explanation:

Hello! This question is looking for the absolute value of integers. The absolute value is the distance the number has from zero. For example, -12 as twelve numbers away from zero, twelve away in the negative direction. The absolute value of -12, then, is just twelve. An easy way to remember this is to take away the negative sign when taking the absolute value, since an absolute value can never be negative. The absolute value sign is represented by a squarish bracket [ and ].

This question says to find the absolute value of each integer and then add the two. First we have [-12]. This is 12 away from zero, and we can take away the - sign from the asked integer and we get 12.

The second integer given is 4, and when we take the absolute value of 4, [+4], we get positive four. This is because four is four spaces away from zero on the number line.

Thus, we have +12 and +4 as are values to add since they are the absolute values and we can form this equation

12+4=16

Thus, the answer is 16.

Hope this helps! Remember the hint, when something has brackets like that or asks for the absolute value, take away a negative sign and make it positive! Have a great day!

CAN someone HELP ME with DOMAIN AND RANGE?

CAN someone HELP ME with DOMAIN AND RANGE?

Answers

Answer:

Domain: -2≤ x ≤ 5

Range: -2 ≤ x ≤ 4

Step-by-step explanation:

Just do as it looks. It's supposed to be like this unless it is plotted points then it would be other numbers like -2, -1, 0, and so on. but the above is the usual answer since this is a shape. it could also be a line

What is the formula for calculating the surface area of a sphere?

What is the formula for calculating the surface area of a sphere?

Answers

Answer:

Please give brainliest

Step-by-step explanation:

c

The equation log 1.102814 = log 1.004458333312t models the amount of time it takes a $10,000 investment to grow to $11,028.14 in a savings account where the annual interest is compounded monthly. Solve for the amount of time, rounding your answer to the nearest month.

2 months
22 months
1 months
18 months

Answers

Using the rule that states that log a = log b is equivalent to a = b, we can write:

1.102814 = 1.004458333312t

To solve for t, we can isolate it by dividing both sides of the equation by 1.004458333312:

1.102814/1.004458333312 = t

t ≈ 1.096 years

Since the annual interest is compounded monthly, we need to multiply t by 12 to get the number of months:

t(months) ≈ 13.15 months

Rounding to the nearest month, we get:

t(months) ≈ 13 months

Therefore, it takes approximately 13 months for a $10,000 investment to grow to $11,028.14 in a savings account where the annual interest is compounded monthly. Answer: 1 months.

2) Factor the expression
using the greatest common
factor: 32x + 80
HELP ASAP

Answers

Answer:

32x+80

(32x+80)

16(2x+5)

The factorised expression is 16(2x + 5).

What does greatest common factor mean?

Highest common factor is the highest factor that is common to two or more numbers. The factors of a number are numbers that divide the original number evenly.

The factors of 32 and 80 = 1, 2, 4, 8, 16

Highest common factor = 16

To learn more about highest common factor, please check: https://brainly.com/question/26073850

how do u solve ax² -5ax+6a

Answers

Answer:

a(x - 3)(x - 2)

Step-by-step explanation:

\(a {x}^{2} - 5ax + 6a \\ \\ = a {x}^{2} - 3ax - 2ax + 6a \\ \\ = ax(x - 3) - 2a(x - 3) \\ \\ = (x - 3)(ax - 2a) \\ \\ = (x - 3)a(x - 2) \\ \\ = a(x - 3)(x - 2)\)

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