PLZ HELP ILL GIVE BRAINLIEST

PLZ HELP ILL GIVE BRAINLIEST

Answers

Answer 1

Answer:

-1 -9i, where a = -1 and b = -9

Step-by-step explanation:

1st step is to open up the brackets. Since there's a (-) in front of the second bracket, we have to multiply every term by -1, so positive becomes negative, negative becomes positive etc.

4-i-5-8i

Then we collect like terms.

-1 -9i

This is the answer. It looks wrong since the variables are 'positive' in a +bi, but you have to remember that a variable can be represented as a, but its actual value could be negative, in this case -1. This is the same with b, as b could be the same as -9.

This is an expression, so we can't multiply everything by -1 to make it 'look right'. You can only multiply by -1 or 'alter' the terms when the expression equates to something.


Related Questions

How do you convert y-15= 50(x-3) to slope-intercept form?

Answers

Answer:

x=\frac{y-15}{50}+3

Step-by-step explanation:

PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

112°

Step-by-step explanation:

according to the question

34°+34°+x=180°

68°+x=180°

x=112°

Where to finds test answers on mathspace before you do the test?

Answers

Step-by-step explanation:

You can use web browser to type your answer into  mathspace. The following browsers supports mathspace.

Chrome, MacOS safari, Microsoft edge .

can someone help me!

Solve for x.

Answers

Answer:

x=7

Step-by-step explanation:

Using parallel lines, cut off by a transversal, we can do this (see image):

Using the image, we can say that 94 = c = a= f, and 13x-5 = b = d =g

Since angles on a straight line add to 180, we can say that

13x-5+94 = 180

13x + 89 = 180

subtract 89 from both sides

13x = 91

x = 7

Amy glued purple ribbon around the edge of her circular mirror. She used
63 inches of ribbon. This was just enough to go once around the mirror. What
is the approximate diameter of her mirror?

Answers

Answer: The answer is 20in

Answer:

20 inch

Step-by-step explanation:

HELP PLSSSS LOL!!!!!!!

Answers

Answer:

1.=scalene+acute . 2. equilateral .  3. obtuse+scalene .  4. isosceles+right .  5. scalene+acute(cant tell exactly)  6. acute+isosceles .  7. right+isosceles . 8. isosceles + obtuse

Step-by-step explanation:

look at pictures

In function for every input there is exactly one output

Answers

Answer:

It should be true, because without an output or input it would be an alien device that doesn't need any energy to work, making it true, also i dont really know if its true

Three of the vertices of quadrilateral MARY are M (-3,1), A(3,3), and R(5,7). Find the
coordinates of Y, such that, quadrilateral MARY is a parallelogram.

Use coordinate geometry to prove that MARY is a parallelogram.

Answers

9514 1404 393

Answer:

  Y = (-1, 5)

Step-by-step explanation:

The diagonals of a parallelogram bisect each other, so have the same midpoint. That is ...

  (M +R)/2 = (A +Y)/2

  Y = M + R - A . . . . . . multiply by 2 and subtract A

  Y = (-3, 1) +(5, 7) -(3, 3) = (-3 +5 -3, 1 +7, -3) . . . . . substitute point coordinates

  Y = (-1, 5)

Coordinate geometry was used to find Y that makes MARY a parallelogram. The fact that there is a solution is proof enough that MARY is a parallelogram.

_____

Your teacher may expect the "proof" to be either or both of ...

showing opposite sides have the same slopeshowing opposite line segments have the same length

Given the method used above, both of these are unnecessary. However, in the interest of completeness, we will demonstrate.

Slope and Length of MA

  slope = (3 -1)/(3 -(-3)) = 2/6 = 1/3

  length = √(2²+6²) = √40

Slope and Length of AR

  slope = (7 -3)/(5 -3) = 4/2 = 2

  length = √(4² +2²) = √20

Slope and Length of RY

  slope = (5 -7)/(-1 -5) = -2/-6 = 1/3 . . . . same as opposite side MA

  length = √((-2)²+(-6)²) = √40 . . . . . . . same as opposite side MA

Slope and Length of YM

  slope = (1 -5)/(-3 -(-1)) = -4/-2 = 2 . . . . same as opposite side AR

  length = √((-4)² +(-2)²) = √20 . . . . . .  same as opposite side AR

Opposite sides have the same slopes, so the figure is a parallelogram.

Opposite sides have the same lengths, so the figure is a parallelogram.

Here is a list of numbers.
32 29 30 37 34 33 31 Work out the median

Answers

Answer:

20, 29, 30, 31, 32, 33, 34, 37

~ the median is: 31 +32 / 2 = 31.5

Step-by-step explanation:

29 27 25 23 21 19
Plz mark me as Brainly

PLEASE HELP! The vertices of square LMNO are L(0, 2), M(2, 0), N(0,−2), and O(−2, 0). Which of the following shows that its diagonals are congruent perpendicular bisectors of each other? I ATTACHED THE IMAGES.

Answers

Answer:

The fourth one is correct.

Step-by-step explanation:

To show the diagonals are congruent, calculate their lengths using the Distance Formula: d=(x2−x1)2+(y2−y1)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√.

Find the length of LN.

Substitute 0 for x1, 2 for y1, 0 for x2 and −2 for y2.

LN=(0−0)2+(−2−2)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√

=02+(−4)2‾‾‾‾‾‾‾‾‾‾√

=8‾√

Find the length of MO.

Substitute 2 for x1, 0 for y1, −2 for x2 and 0 for y2.

MO=(−2−2)2+(0−0)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√

=(−4)2+02‾‾‾‾‾‾‾‾‾‾√

=8‾√

Since LN=MO, by the definition of congruent line segments, LN=MO.

To show the diagonals are perpendicular, calculate their slopes using the Slope Formula: m=y2−y1x2−x1.

Find the slope of LN.

Substitute 0 for x1, 2 for y1, 0 for x2 and −2 for y2.

m1=−2−20−0=−40⇒m1 cannot be defined.

Find the slope of MO.

Substitute 2 for x1, 0 for y1, −2 for x2 and 0 for y2.

m2=0−0−2−2

=0−4

=0

The slope of LN cannot be defined, this means that LN is parallel to y-axis. The slope of MO is equal to 0, this means that MO is parallel to x-axis. x and y axis are perpendicular, therefore LN⊥MO.

The figure shows the same square L M N O on a Cartesian plane as in the beginning of the task. Diagonal L N is perpendicular to diagonal M O.

To show the diagonals bisect each other, calculate their midpoints using the Midpoint Formula: P(x1+x22,y1+y22).

Find the midpoint of LN.

Substitute 0 for x1, 2 for y1, 0 for x2 and −2 for y2.

P1(0+02,2+(−2)2)=(0, 0)

Find the midpoint of MO.

Substitute 2 for x1, 0 for y1, −2 for x2 and 0 for y2.

P2(2+(−2)2,0+02)=(0, 0)

Both midpoints are the same point on the coordinate plane. This means the two diagonals intersect at their midpoints, or bisect each other.

The figure shows the same square L M N O on a Cartesian plane as in the beginning of the task. The diagonals intersect at point P. Segments L P, P N, M P, and P O are congruent.

Therefore, the diagonals are congruent perpendicular bisectors of each other.

What is 13 4/5 + 5 1/3

Answers

The answer is 19 2/15

Step-by-step explanation:

Add the whole numbers

13 +5 = 18

Add the fractions

4/5 +1/3

The LCD is 15

12/15 + 5/15

17/15

Simplify

17/15 = 1 2/15

1 is a while number so, add it to the other whole number

18 +1 = 19

Your final answer will be 19 2/15

Please gimme brainliest

Work out the answers

Answers

a)200

b)120

c)410

d)37.3

Using differentials, the approximate change in the value of f(x) = x2 + 4x - 1 as x changes from 3 to 3.1 is

O 0.1.

O 1.

O 10.

O 100

Answers

The approximate change in the value of the function will be 10. Then the correct option is C.

What is the average rate change of a function?

It is the average amount by which the function is modified per unit throughout that time period. It is calculated using the gradient of the line linking the interval's ends on the graph that represents the function. The average rate of change of the function is given as,

Average rate = [f(x₂) - f(x₁)] / [x₂ - x₁]

The function is given below.

f(x) = x² + 4x - 1

The average rate is calculated as,

Average rate = [f(3.1) - f(3)] / [3.1 - 3]

Average rate = [(3.1² + 4(3.1) - 1) - (3² + 4(3) - 1)] / 0.1

Average rate = (21.01 - 20) / (0.10)

Average rate = 1.01 / 0.10

Average rate = 10.1

Average rate ≈ 10

The approximate change in the value of the function will be 10. Then the correct option is C.

More about the average rate change of a function link is given below.

https://brainly.com/question/23715190

#SPJ5

help omg plssss !!!!!!!!!!!!!!!!!!!!!1

Answers

The answer is 2
Because 2-3=-1

Answer: 4

Step-by-step explanation:

3 - - 1 = 4

three is less than means 3 minus whatever the number is, in this case the number is -1.

Two sides of a right triangle are 5 units and 8 units respectively.
Those sides could be the legs, or they could be one leg and the
hypotenuse. What are the possible lengths of the third side?

Answers

Answer: See explanation

Step-by-step explanation:

The possible lengths of the third side would be:

✓hypotenuse = (✓5² + 8²)

= ✓(25 + 64)

= ✓89

= 9.4

OR

8² - 5² = side²

side² = 64 - 25

side² = 39

Side = ✓39

Side = 6.24

The volume of a cube-shaped box is 27^5 cubic millimeters. What's the length of one side of the cube-shaped box?

Answers

5^10 hope this helps have a good day

What’s 2 plus 2 please let me know I have no idea please tell me please I beg

Answers

Answer:

22

Step-by-step explanation:

Answer: 2+2=4

Step-by-step explanation: Thanks for the points kiddo :)

Anyways if you had 2 dogs and got 2 more you would have 4 dogs in all

OK!!! I NEED HELP AGAIN AND ITS HONESTLY SUPER EASY :/ I DONT KNOW WHY IM NOT doing it BY MYSELF BUTTTTT---- GIVING BRAINLIEST, FIVE STARS AND THANKSSS!


Which measurement is most accurate to describe the amount a soup bowl could hold?

4 fl. oz.
16 fl. oz.
3 pints
1 quart

Answers

Answer: 16 fl oz

Step-by-step explanation:

Answer:

1 quart sorry if I'm wrong

Step-by-step explanation:

hiiiiiiiiiiiiiiiiiiiiiiii pls hellllppp :/

Answers

Answer:

$15 an hour

Step-by-step explanation:

If we want to find the pay per hour, we divide the pay by the hour

[tex]\frac{22.5}{1.5} = 15\\[/tex]

63.75/4.25 =15

108.75/7.25 = 15

191.25/12.75= 15

Our answer is $15 an hour

Our answer is $15 an hour, or B.

find the value of x

x=

Answers

Answer:

x = 4

Step-by-step explanation:

Since BD is an angle bisector then it divides the opposite side into segments that are proportional to the other 2 sides, that is

[tex]\frac{BA}{BC}[/tex] = [tex]\frac{AD}{CD}[/tex] , substitute values

[tex]\frac{x}{6}[/tex] = [tex]\frac{2}{3}[/tex] ( cross- multiply )

3x = 12 ( divide both sides by 3 )

x = 4

Describe the slope of the line

Find the slope.

m =

Answers

Answer:

m = -3/5

Step-by-step explanation:

Since the line is going downwards towards the right, it is a negative slope.

We can use the points to solve for the slope.

m = -2 - 1 / 2 - (-3)

m = -2 - 1 / 2 + 3

m = -3/5

Therefore, the slope is -3/5.

*****the pic isn't the best!!*****
you can only do what you can with only school!!!

Identify the function shown in this graph.​

Answers

B is the answer

have a good day. hope i could help.

19. Find the equation of the line that contains the given points. Write the equation in slope-
intercept form, if possible.
(-5,-5) and (1,7)
Please solve step by step

Answers

Answer:

y = 2x +5

Step-by-step explanation:

1. use slope intercept for y2 - y1 / x2 - x1 --> 7-(-12) / 1-(-5)

2. solve --> 7-(-12) / 1-(-5) = 2

3. put in slope (2) and a coordinate into equation --> y = mx + b --> 7 = 2(1) + b

4. solve --> 7 = 2(1) + b --> b = 5

5. put the equation together --> y = 2x + 5

What is the value of x?

Enter your answer in the box.
x =
A triangle with angle measures thirty-nine degrees and one hundred two degrees. The third angle has an unknown measure, x degrees.

Answers

Answer:

x=39

Step-by-step explanation:

The sum of the measure of all of the interior angles of a triangle is equal to 180 degrees. If a triangle has angle measures known to be 102 and 39 degrees, in order to find the last angle measure an equation can be used such as [tex]x=180-102-39[/tex]. When solving this equation the third angle measure is x, which is revealed to be 39 degrees.

d
(Use the graph below.)
N
M
12
P
Q
Which letter represents (-2, 3)?
ОА. м
B. N
Ос. о
ODP
ΟΕ. Ο O

Answers

Answer: N

Step-by-step explanation:

Which expression is equivalent to 4x-5 ?
Select all that apply
A. 3(2x-5)-2(x-5)
B. 3x-2-(3-x)
C. 7x+1-3(x+2)
D. 4(2x-1)-2(2x-1)

Answers

Answer:

A

Step-by-step explanation:

[tex]x58 \frac{.225 {.39 < }^{?} }{?} [/tex]

[tex].555121213 \frac{ = < < \sqrt{ { \frac{?}{?} }^{?} } }{?} [/tex]

A train travels at a speed of 35 miles per hour. How far will the train travel in 5 hours?

This is Math

Answers

Answer:

175 miles

Step-by-step explanation:

35 times 5 = 175

Answer: 175

Explanation: 35x5=175

What is the Length of side ML ?

Answers

9 is correct answer because it is given that ML=LB.

Joey is standing on a diving board that is 5.6 feet above sea level. Joey dives into the water to a depth of -8.6 feet below sea level. Which equation can be used to determine Joey's change in altitude during the dive? 5.6 − (-8.6) = 14.2 5.6 + 3.0 = 8.6 -5.6 + 14.2 = -8.6 5.6 − 8.6 = -14.2

Answers

Answer:

the last one

Step-by-step explanation:

Answer:

1st equation

Step-by-step explanation:

uh I kinda need help lolz

Answers

I believe the answer to this question is A
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