(3-i)+(1-2i) =
O 4 - 3i
O 4 +3i
O 4+i

Answer:

D

Step-by-step explanation:

Answer:  1.2

Step-by-step explanation:

Let X denotes the grades on a  language midterm at Oak Academy.

As per given ,

X follows normal distribution ( because it has symmetric graph)

[tex]\mu=67,\ \ \ \ \sigma= 2.5[/tex]

Formula for z : [tex]z=\dfrac{X-\mu}{\sigma}[/tex]

For X = 70, we have

[tex]z=\dfrac{70-67}{2.5}=\dfrac{3}{2.5}=1.2[/tex]

Hence, the z-score for Ishaan's exam grade = 1.2

z-scores are the corresponding standard normal variate's values for normal variates' values. The z-score for Ishaan's grade is 1.2

If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.

If we have

[tex]X \sim N(\mu, \sigma)[/tex]

(X is following normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] )

then it can be converted to standard normal distribution as

[tex]Z = \dfrac{X - \mu}{\sigma}, \\\\Z \sim N(0,1)[/tex]

(Know the fact that in continuous distribution, probability of a single point is 0, so we can write

[tex]P(Z \leq z) = P(Z < z) )[/tex]

Also, know that if we look for Z = z in z tables, the p-value we get is

[tex]P(Z \leq z) = \rm p \: value[/tex]

For the given case, if we suppose the random variable X's values as scores of the grades on given language midterm at Oak Academy, then, as it is symmetric around value 67, with σ = 2.5, thus,

[tex]X = N(\mu = 67, \sigma = 2.5)[/tex]

Its given that Ishaan scored X = 70

The standard normal variate conversion of X is given by:

[tex]Z = \dfrac{X- \mu}{\sigma} = \dfrac{X - 67}{2.5}[/tex]

Thus, z-scores for Ishaan's score is: [tex]Z = \dfrac{70 - 67}{2.5} = \dfrac{3}{2.5} = 1.2[/tex]

Learn more about standard normal distribution here:

https://brainly.com/question/10984889

Step-by-step explanation:

since the volume formula is given in the picture,

volume of the cylinder = π x 3.75^2 x 6.21 = 274.349....in^3 (this is the exact answer)

HOWEVER,

since question says round off to nearest whole number,

Volume = 3 x 4^2 x 6 = 288in^3

therefore, answer = option C.

Hope that helps.

If you like to venture further, do check out my insta (learntionary) where I constantly post math tips! Thanks!

Answer:

What even is the question?

Step-by-step explanation:

There is no question in what u said.

my favorites --

-- jormungand

-- the god of high school

-- stars align

-- haikyuu

-- terror in resonance

-- bungou stray dogs

-- attack on titan

Answer:

the length of AB is 5

Step-by-step explanation:

Answer: -8x + 13

Step-by-step explanation:

Answer:

Step-by-step explanation:

20. r= S/2πh

21. y= 2-3/5x

22. 4.3333333 minutes

23. 80 ounces

24. x= 21

25. c= -1

Answer:

1:3:4

Step-by-step explanation:

[tex]\frac{5}{5}: \frac{15}{5}: \frac{20}{5}=1:3:4[/tex]

Answer:

correct answer is B

Step-by-step explanation:

Hope this helps

Answer: I think it's 160

Step-by-step explanation:

Answer:

B and C

Step-by-step explanation:

Just did it on edg

Answer:

Which of these statements are true for joint variations? Check all that apply.

A.There are at least two constants of proportionality.

B.The dependent variable is related to the product of the independent variables by a constant of proportionality, k.

C.The equation must have at least two independent variables.

D.The constant of proportionality is 1.

B. The dependent variable is related to the product of the independent variables by a constant of proportionality, k.

C. The equation must have at least two independent variables.

These are the correct answers

Answer:

3 + 7x = 7x + 3

Step-by-step explanation:

Simplifying

7x + 3 = 7x + 3

Answer:

Angle A = 45 degrees

Step-by-step explanation:

7x+3 + 7x+3 +90 = 180

14x + 96 = 180

14x = 84

x = 6

Angle A = 7x+3. --> 7(6) + 3 --> 45

Angle A = 45 degrees

Answer:

Conductors are materials that provide easy paths for the flow of electrons. Conductors are generally made from materials that have large, heavy atoms. And insulators are the things that have very large resistance to the flow of electric current.

Hope this helps!!

Answer:

Step-by-step explanation:

17 x 100 = 1,700

17 x 10 x 10 = 1,700

(1 ten 7 ones) x 100 = 1,700

All of them go into the thousands column.

Answer: die.

Step-by-step explanation:

Answer:

I dont know why my answer was removed nor why i was warned for it. But the answer is C

Step-by-step explanation:

Answer: 1, 7 is he answer I just took the quiz and got it correct.

Step-by-step explanation:

Answer: no

Step-by-step explanation:

Answer:

non-included

Step-by-step explanation:

A non included side of a polygon shares a side with only one angle of a pair of angles.

Answer: This type of angles are  adjacent interior angles.

Answer:

27. chord

28. radius

29. diameter

30. secant

31. tangent

32. secant

Step-by-step explanation:

I guess thats the correct answer

9514 1404 393

Answer:

  7 +11·i

Step-by-step explanation:

  √-121 = (√-1)(√121) = i·11

So, 7 +√-121 = 7 +11·i

Answer:

(-5, 0)

Step-by-step explanation:

f(x) = (x - 1)(x2 + x - 20) = 0

x - 1 = 0

x = 1

x^2 + x - 20 = (x + 5)(x - 4)

x + 5 = 0; x - 4 = 0

x = -5; x = 4

Answer: (-5, 0)

Answer:

5, 3

Step-by-step explanation:

correct on edge2020

Answer:

(5, 3)

Step-by-step explanation:

late but still lol

Answer:

[tex]n = 4752 \ gallons[/tex]

Step-by-step explanation:

Given

Delivery: 396 dozens gallons in a day

Required

Determine the number of gallons in a day

From the question above, we understand that:

[tex]n = 396\ dozens\ gallon[/tex]

From unit conversion:

[tex]1\ dozen = 12[/tex]

So:

[tex]n = 396\ dozens\ gallon[/tex] becomes

[tex]n = 396 * 12 \ gallon[/tex]

[tex]n = 4752 \ gallons[/tex]

Hence, 4752 gallons of milk is delivered daily

Answer:

No

Step-by-step explanation:

A right triangle needs to have a right angle in this case this triangle does not. The next answer up is a triangle with 6,8, and 10 inches. This would give you a right triangle.

Answer: Natural: G ; Whole: B ; Integer: H; Rational: A, D, F, J, I, E; Irrational: C, K

Step-by-step explanation:

Natural numbers- Counting numbers (1, 2, 3, 4, etc.)

Whole numbers- Counting numbers and 0

Integers- Counting numbers, 0, and their opposites

Rational numbers- any number that can be written as a fraction in which 0 isn't the denominator

Irrational numbers- all other numbers

Answer:

60 : 4 :: 90 : c   proportion

60c = 4(90)       product means/extremes

60c = 360

c = 6

 Or  90 is 1.5 times 60, therefore you need 1.5 times 4 cups.

Answer:

4 cups

Step-by-step explanation:

cause I said so....

Alright, it went 1 to the right and down 2 times.

So for point B, you calculate the opposite.

Point B goes 1 left while going up by 2.

(9 - 1, 3 + 2) = (8, 5)

Pre-image point A is (8, 5)

The preimage of point A before a translation right 1 unit and down 2 units

is (8, 5).

Two-dimensional figures can be transformed mathematically in order to travel about a plane or coordinate system.

Dilation: The preimage is scaled up or down to create the image.

Reflection: The picture is a preimage that has been reversed.

Rotation: Around a given point, the preimage is rotated to create the final image.

Translation: The image is translated and moved a fixed amount from the preimage.

Given, The image point of A after a translation right 1 unit and down 2 units is point B (9, 3) so we go exact opposite 1 unit left and 2 units up which is

(- 1, 2).

∴ The pre-image point A is (8, 5).

learn more about translations here :

https://brainly.com/question/12463306

#SPJ2

Answer:

The answer is B.

Step-by-step explanation:

when x is 0, y is 5. So that is the yintercept and 4-5=-1 -4-0=-4 do 1/4

Answer:

A. [tex] \overline{OC} \perp \overline{AB} [/tex]

Step-by-step explanation:

According to tangent theorem, a tangent is formed when the radius of a circle is perpendicular to the line, meeting at a point around the circle, such that the tangent line would be perpendicular to the radius of the circle with a center.

Given that [tex] \overline{AB} [/tex] is a tangent of the circle O, at a point C, and [tex] \overline{OC} [/tex] is a radius, therefore, it follows that:

[tex] \overline{OC} \perp \overline{AB} [/tex].

This means the radius of the circle is perpendicular to the tangent formed at point C.

Answer:

The elevation of the rest stop is 37.5 feet above sea level.

Step-by-step explanation:

Given that the elevation at the top of the hill is 127 feet above sea level and The valley floor is 52 feet below sea level.

So, the total length from the top of the hill to the valley floor

[tex]l= 127+52 = 179[/tex] feet

So, length of halfway [tex]= l/2=179/2=89.5[/tex] feet ...(i)

Assuming that the stop for rest, the halfway between the top of the hill and the valley floor, is at x feet above sea level.

So, the length between the stop position and the valley floor [tex]= 52 +x[/tex] feet.

As the stop position is at half-way, so by using equation (i), we have,

[tex]52 + x = 89.5 \\\\\Rightarrow x =89.5-52 \\\\[/tex]

[tex]\Rightarrow x=37.5[/tex] feet

Hence, the elevation of the rest stop is 37.5 feet above sea level.