Help ASAP please help

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:

1=8

1=8

3=18

0=0

4=23

5=28

please mark the brainliest

Answer:

The afternoon temperature is

5°

Step-by-step explanation:

Step one:

given data

the morning temperature=  -15°

the afternoon temperature rose by  20°

Required

The afternoon temperature

Step two:

Hence the afternoon temperature is given as

=-15°+20°

= 5°

Answer:

Area = 40x + 15 squared units.

Step-by-step explanation:

Area of a rectangle = Length × width

Answer:

C = 2rπ

C = 2(7)(3.14) = 53.38

Step-by-step explanation:

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:

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:

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

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:

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:

52

Step-by-step explanation:

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:

a

Step-by-step explanation:

Answer:

24565 phones sold in 2025

Step-by-step explanation:

dont know the formula. srry

Hope this helps!

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

Answer:

25 miles per hour

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

the answer is right there lol

Since this scuba diver descends below the surface of a lake at a rate of 12 feet per minute, an integer which represents the depth of the diver after four (4) minutes is 48 feet.

The rate of change can be defined as a type of function that describes the average rate at which a quantity decreases or increases with respect to another quantity.

Mathematically, the rate of change for the depth covered by this scuba can be calculated by using this formula;

Rate of change = Depth/time

Making depth the subject of formula, we have:

Depth = Rate of change × time

Substituting the given parameters into the formula, we have;

Depth = 12 × 4

Depth = 48 feet.

Read more on rate of change here: brainly.com/question/15648128

#SPJ1

Answer:

m=7

X1= -3

Y1=5

Y-Y1=m(X-X1)

Y-5=7(X-(-3))

Y-5=7(X+3)

Y-5=7X+21

Y=7X+21+5

Y=7X+26

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:

I dont think it that would be the solution because 14 has to be greater and not equal.

Step-by-step explanation:

3(b) + 2 < 14

3(4) + 2 < 14

12 + 2 < 14

14 < 14

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:

75%

Step-by-step explanation:

Answer:

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

Answer:

answer 3200 your welcome thats the answer

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: 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:

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:

6

Step-by-step explanation:

Step-by-step explanation:

make it braintliest please