how do i work this out please?

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.

Answer:

40 dollars for the uniform

it costed 48 dollars for 4 months

Step-by-step explanation:

12*4=48

88-48=40

ask in comments for any other questions

no money, just brainilst please:)

HOPE THIS HELPS!  :D

The maximum  number of miles Rachel can run on the third day without going over the planned average of  6.4 miles per day is 6.1 miles.

Let x represent the maximum  number of miles

Formulate

6.6+6.5+x÷3=6.4

Hence:

6.6+6.5=6.4×3

13.1+x=19.2

x=19.2-13.1

x=6.1 miles

Inconclusion the maximum  number of miles Rachel can run on the third day without going over the planned average of  6.4 miles per day is 6.1 miles.

Learn more about distance here:https://brainly.com/question/4931057

Answer:

1. yes

2. yes

3. no

4. no

5. yes

Step-by-step explanation:

The questions you're asking relate to the Triangle Inequality Theorem, which states that the two smallest sides (ex. 6 and 13) have to be of greater value than the largest side (ex. 18)

1. 6+13>18

2. 34+27>58

3. 29+9=38 (since the value of the two smallest sides are equal, it does not apply to the Triangle Inequality Theorem, and therefore won't be a triangle)

4. 12+12<25

5. 19+14>31

Happy to help <3

Answer:

first things first nice picture, second i don't know what a yubu is, and third what is " re again xx"?

Step-by-step explanation:

Answer:

Q'(15, -3)

Step-by-step explanation:

Multiply the coordinates by the scale factor to get the new coordinates.

5 · 3 = 15

-1 · 3 = -3

Therefore, Q'(15, -3).

Answer:

if the sum of digits is divisible by 3 ,the number is also divisible by 3. Since 210 is divisible by 3, the given number is also divisible by 3.

Answer:

a

Step-by-step explanation:

Answer:

x = 3 or x = 7

Step-by-step explanation:

X² - 8x + 14 = 2x - 7

x² - 8x + 14 - 2x + 7 = 0

Now we have a quadratic equation ;

x² - 10x + 21 = 0

-3 and - 7 gives a sum of - 10 and a product of 21

x² - 3x - 7x + 21 = 0

x(x - 3) - 7(x - 3) = 0

(x - 3) = 0 or (x - 7) = 0

x = 3 or x = 7

Answer:

the slope is 1/2

Step-by-step explanation:

find the change in y over the change in x

2-0/0+4

you get 2/4 then simply that to 1/2

Answer:

0.5

Step-by-step explanation:

on edg

Answer:

6 in long ; 4 in wide

Step-by-step explanation:

With a scale of 1:20

Scaled drawing is 3 in long ; 2 in wide

Actual dimension :

Length = 20 * 3 = 60 in

Width = 20 * 2 = 40 in

Hence, to make a scaled drawing using 1 :10

Dimension :

Length = (1/10) * 60 = 6 inches

Width = (1/10) * 40 = 4 inches

Question:

Jin Ya take the bus across town to school each morning last week he timed his trips and found that the time varies day today the time in minutes or listed below:

10 15 11 13 11

If you had to use one number to tell someone how long it took Jin Ya to get to school, what would you say?

Answer:

11 minutes or 12 minutes

Step-by-step explanation:

Given:

10 15 11 13 11

Required

Determine one number that summarizes the 5 numbers

First, one can use the mean to get the summary of the numbers.

The mean is calculated as:

[tex]Mean = \frac{Sum\ of\ observation}{Number\ of\ observation}[/tex]

[tex]Mean = \frac{10 + 15 + 11 + 13 + 11}{5}[/tex]

[tex]Mean = \frac{60}{5}[/tex]

[tex]Mean = 12[/tex]

Another number that summarizes the numbers is the mode of the distribution.

[tex]Mode = Highest\ Occurring\ Value[/tex]

So, in this case:

[tex]Mode = 11[/tex]

Hence, you can either use 11 minutes or 12 minutes.

Answer:

52

Step-by-step explanation:

Answer:

It's the dot that's right in the middle of the rest, where the two lines meet.

Step-by-step explanation:

That's the equilibrium point.

The equilibrium point of the given graph is at (35, 90)

The demand curve shows the quantities of a particular good or service that buyers will be willing and able to purchase at each price during a specified period. The supply curve shows the quantities that sellers will offer for sale at each price during that same period.

Given that, the supply and demand curves for a new style of silver earrings are shown.

We need to find the equilibrium point,

We know that, On a demand and supply graph, the equilibrium point can be found where the demand and supply curves intersect. Price is on the axis on both the demand and supply curves, and quantity demanded is on the axis.

In our graph, the curves are intersecting at (35, 90)

Hence, the equilibrium point of the given graph is at (35, 90)

Learn more about supply and demand curves, click;

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Answer: A edge 2021

Step-by-step explanation:

Answer:

That's strange. (-1/2, 5) would work for both if only the top equation had a less than or equal to sign. If all else fails, just puts c as your answer lol

Step-by-step explanation:

Answer:

Step-by-step explanation:

so the g(x) = x-1 gets plugged into every  x in the f(x) function

=[tex](x-1)^{2}[/tex] - 3(x-1) + 3

=[tex]x^{2}[/tex]-2x+1 -3x +3 + 3

=[tex]x^{2}[/tex] -5x +7

now plug in x = 5

=[tex]5^{2}[/tex] -5(5) +7

= 7

Answer:

2

Step-by-step explanation:

Since they are similar triangles then the ratio will be the same on all sides.

You know the one side 5 is the same ratio to 5x   so you multiply x to all sides of the little triangle to get the value of the equivalent side in the big one.

so the missing side x times x will equal the big size of the bigger triangle which is 4

x times x = 4   can only be 2

Answer: 6s-3.3

Step-by-step explanation:

Answer:

[tex]s=0.55[/tex]

Step-by-step explanation:

[tex]6s=3.3\\s=\frac{3.3}{6}\\s=0.55[/tex]

Answer:  put a dot at the place you  think 7 over 2 would be then put  one at -2 on the x axis then drawn a line

Step-by-step explanation:

Answer:

25 miles per hour

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

the answer is right there lol

Sorry, I could have helped but I ain't seeing any diagram

Answer:

9/4 or 2 1/4

Step-by-step explanation:

2 7 /8 -5/8 which gives you 9/4

Answer:

Area = 40x + 15 squared units.

Step-by-step explanation:

Area of a rectangle = Length × width

Answer:

6

Step-by-step explanation:

Step-by-step explanation:

make it braintliest please

Answer:

Percentage Calculator: What is 20 percent of 16000.? = 3200.

Answer:

answer 3200 your welcome thats the answer

Answer:

See explanation

Step-by-step explanation:

not sure what class this is for but I\ll try. Each traveller has a 21 km drive so their fare should be equal.

method 1) each traveller can pay for 21 km worth when they get out

method 2) Curly can pay the full fare and Andy and Bob can pay him back later (they're brothers so this should be easy to manage)