MATHEMATICS HIGH SCHOOL

PLEASEEEEEEEEEE HELPPPPP❤️
PLEASEEEEEEEEEE HELPPPPP❤️ - 1

Answers

Answer 1
Answer:

Answer:

B

Step-by-step explanation:

-6+√-4 = -6+2i
Answer 2
Answer:

Answer:

-6 + 2i

Step-by-step explanation:

The square root of -4 is the imaginary number: 2i The -6 stays the same. So add,, but don't combine real and imaginary numbers.

-6 + 2i

Related Questions

Solve x2 − 8x + 5 = 0 using the completing-the-square method.x = negative four plus or minus the square root of eleven x = four plus or minus the square root of eleven x = negative four plus or minus the square root of five x = four plus or minus the square root of five
If 2n=14 what Is 8n? I am really bad at algebra and I need to do my homework
Help please ahahah i hate this sm i really need help
There are 100 pennies in a dollar what fraction of a dollar is 61 pennies write it as a fraction , as a decimal and in word form
A bacteriologist estimates that there are 5.2×10^4 bacteria growing in each of 20 petri dishes. About how many bacteria in total are growing in the petri dishes? Express your answer in scientific notation

A shuttle bus makes 4 round trips between two shopping centers each day the bus holds 24 people if the bus is full on each one way trip how many passengers are carried by the bus each day

Answers

48 is your answer:):);)

​​Find the coordinates of the midpoint of with endpoints G(-9, 4) and H(5, 10).

Answers

((x_(2) + x_(1))/(2), (y_(2) + y_(1))/(2)) \n((-9 + 5)/(2), (4 + 10)/(2)) \n((-4)/(2), (14)/(2)) \n(-2, 7)

Which expression is equivalent to x4 -y4

Answers

factorise

in this case the common factor is 4
so, 4(x-y)

Heather sampled the ages of 50 randomly selected people that frequented a store and obtained a mean of 24. She constructed a 95% confidence interval which was (19.1, 28.9). What is the margin of error?A) 2.5 years
B) 4.9 years
C) 5 years
D) 6.7 years

Answers

The correct answer for the question that is being presented above is this one: "D) 6.7 years." Heather sampled the ages of 50 randomly selected people that frequented a store and obtained a mean of 24. She constructed a 95% confidence interval which was (19.1, 28.9). The margin of error is 6.7  years

Answer: it’s b

Step-by-step explanation:

Just did it

What is the axis of symmetry of the function f(x) = –(x + 9)(x – 21)?The axis of symmetry is x =

Answers

f ( x ) =  - ( x + 9 ) ( x - 21 ) =
= - ( x² - 21 x + 9 x - 189 ) =
= - x² + 21 x - 9 x + 189 =
= - x² + 12 x + 189
This is a quadratic function and its axis of symmetry is:
x = - b / 2a,  where: a = - 1 and b = 12
x = - 12 / 2·(-1) = - 12 / (- 2) = 6
Answer: x = 6

The axis of symmetry is x = 6

Further explanation

Discriminant of quadratic equation ( ax² + bx + c = 0 ) could be calculated by using :

D = b² - 4 a c

From the value of Discriminant , we know how many solutions the equation has by condition :

D < 0 → No Real Roots

D = 0 → One Real Root

D > 0 → Two Real Roots

Let us now tackle the problem!

An axis of symmetry of quadratic equation y = ax² + bx + c is :

\large {\boxed {x = (-b)/(2a) } }

Given:

f(x) = - (x + 9)(x - 21)

f(x) = - (x^2 - 21x + 9x - 189)

f(x) = - (x^2 - 12x - 189)

f(x) = -x^2 + 12x + 189

The axis of symmetry is

x = (-b)/(2a)

x = (-12)/(2(-1))

x = (-12)/(-2)

\large {\boxed {x = 6} }

Learn more

Answer details

Grade: High School

Subject: Mathematics

Chapter: Quadratic Equations

Keywords: Quadratic , Equation , Discriminant , Real , Number , Axis , Symmetry , Function

Can anyone help me find the simplest form for 15/23 / 6/7

Answers

(15/23)/(6/7) = (15/23)*(7/6)
=(15*7)/(23*6)
=105/138
=35/46
(15/23)/(6/7)
(105/161) / (138/161)
(105/161) x (161/138)
16905/22218
5635/7406
35/46 simplest :)
Other Questions
Identify the pattern for the following sequence. Find the next three terms in the sequence.5, 2, -1, -4, ____, ____, ____,... a. Subtract 3; -7, -10, -13 b. Add 3; -7, -10, -13 c. Subtract -3; 7, 10, 13 d. Add 3; 1, 4, 7
Sally has 15 marbles in a bag. 6 are blue, 3 are red, 4 are yellow and 2 are black. What is the probability that Sally draws a blue marble?
What is 5/6 times 7/4
In Canada, $1 and $2 bills have been replaced by coins. When Marissa returned home to San Fran from a trip to Canada, she found that she had acquired 37 of these coins, with a total value of 51 canadian dollars. How many coins of each denomination did she have?