please help. i have test tomorrow and i need to know how to do this.

Please Help. I Have Test Tomorrow And I Need To Know How To Do This.

Answers

Answer 1

Answer:

Answer is D

Just expand

And remember

[tex] \sqrt{ - a} = \sqrt{a} i[/tex]

Goodluck tomorrow

Please Help. I Have Test Tomorrow And I Need To Know How To Do This.

Related Questions

Find the missing angles.

Answers

Answer:

1: 81 is the overall angle, so to find the 2nd angle that makes up the overall angle, just subtract the 1st angle from the overall angle. it would be 81 - 44 = 37. so your answer is 37°.

2: this one is solved the same as number 1, just different numbers. it would be 98 - 59 = 39. your answer is 39°.

3. we know this is angle is a right angle because of the square indicating it. a right angle is 90°, so we would take 90 - 63 = 27. so your answer is 27°.

Need a some help with explanation. Thank you

Answers

Answer:

  C.  (1, 3)

Step-by-step explanation:

The x-coordinate of a point is the measure of the horizontal distance a point is to the right of the y-axis. When the point is translated 4 units to the left, its x-coordinate is reduced by 4: x ⇒ x-4.

The y-coordinate of a point is the measure of the vertical distance a point is above the x-axis. When the point is translated 2 units up, its y-coordinate is increased by 2: y ⇒ y+2.

__

translated points

The translation 4 units left and 2 units up can be summarized by ...

  (x, y) ⇒ (x -4, y +2)

Then the translated vertices are ...

  Q(1, 3) ⇒ Q'(1 -4, 3 +2) = Q'(-3, 5)

  R(5, 1) ⇒ R'(5 -4, 1 +2) = R'(1, 3) . . . . . . . matches choice C

  S(3, 5) ⇒ S'(3 -4, 5 +2) = S'(-1, 7)

Of the points listed, the point (1, 3) matches a translated vertex.

please help! also please explain how to solve

Answers

Answer:

B

Step-by-step explanation:

a+2d=0

a+3d=6

d=6

a=6-3(6)

a=6-18

a= -12

a+(n-1)d

= -12+(n-1)6

= -12+6n-6

= -18+6n

describe the transformation(s) that take place on the parent function, fx) = log(x), to
achieve the graph of g(x) = log(-2x-4) + 2?

Answers

Answer:

1. Right 4 units

2. Up 2 units

3. Horizontal Shrink by 2

4. Reflection across y-axis

how to do the 2nd the 3rd one?

Answers

1.

z + 38° = 180°

(L.P)

z = 142°

y = 32° (alternative angle of angle FCA)

x = 142° (alternative angle of angle z)

2.

x + 65 = 180

(l.p)

x = 180 - 65

x = 115°

y = x (alternative angle of x)

y = 115°

z = y (V.O.A)

z = 115°

~Tulpe⚘

Answer:

Step-by-step explanation:

2)  Linear pair: Two angles are called linear when they are adjacent angles and the non common arms form a straight line. They add uo to 180

 z + 32 = 180     {linear pair}

         z = 180 - 32

        z = 148°

When parellel lines are cut by a transversal alternate interior angles are equal.

          y = 32°        {Alternate interior angles}

           x = z           {Alternate interior anlges}

           x = 148°

3) x +65 = 180  {linear pair}

          x = 180 - 65

         x = 115°

     y = x          {Alternate interior angles}

    y = 115°

z = y      {Verically opposite angles}

z = 115°

8x(12+7-9)-(4+10) what’s the answer

Answers

Equation- 8x(12+7-9)-(4+10)

Answer- 80x−14

which unit would be best to measure a wheal

Answers

Inches i believe. This of course depends on the size of the wheel, but if its a wheel on a care it would be inches.

if the sum of lengths of two adjacent sides of parallelogram is 5 units then what is the perimeter of the parallelogram ​

Answers

Answer: 10

Step-by-step explanation:

Opposite sides of a parallelogram are congruent, so the sum of the lengths of each pair of adjacent sides must be 5. Thus, the perimeter is 5(2)=10.

Amy is planning the seating arrangement for her wedding reception. Each round table can sit 10 guests. The head table can sit the bride and groom with the 6 wedding attendants. If Amy expects 186 to 236 guests to attend her wedding, including the attendants, what is the range for the number of round tables she will need for her reception?

Answers

236-6 because of head table

230 divided by 10 because of 10 per table

Answer: 23

One year, the population of a city was 120,000. several years later it was 133,200. find the percent increase.

Answers

Answer:

11%

Step-by-step explanation:

old population- 120,000

new population- 133,200

increase - 133200-120000

=13200

percentage increase:

(13200*100)/120000

=11%

You work 40 hours/week for 50 weeks and are given the option to be paid hourly or to go on salary. In which situation will you earn the most?

A. $30,000/year
B. $15.00/hour
C. $30,000/year with a 10% bonus
D. $15.00/hour and a $2,000 bonus at the end of the year

Answers

The answer is:

$30,000/year with a 10% bonus

5. A baseball card sold for ​$241 in 1975 and was sold again in 1988 for $405. Assume that the growth in the value V of the​ collector's item was exponential.

Answers

The exponential growth rate of the baseball card given its price in 1975 and 1988 is 4.07%.

What is the exponential growth rate?

The exponential growth rate is the rate of increase in the value of an asset with the passage of time.

Exponential equations have the form a[tex]b^{x}[/tex]

Growth rate = (future value / present value)^(1 / number of years)

(405 / 241)^(1/13) = 4.07%

To learn more about exponential functions, please check: https://brainly.com/question/26331578

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1 is greater than w, and -5 is less than w

Answers

Answer:

Step-by-step explanation:

W can = 0, -1, -2, -3, and -4.

Answer:

W = 0, -1, -2, -3, -4

Step-by-step explanation:

W can not be 1 because it says 1 is greater than w

W can not be -5 because it says -5 is less than w

W can be 0, -1, -2, -3, and -4 because they fit what your question is.

Hope this helps!

Describe fully the single transformation that maps triangle A onto triangle B.
5
A
4
B
3
2
1
1
-5 -4 -3 -2 -1 0
-1
2 3
х
5
5
-2
و دن د
-3
-4
-5
x+
Describe fully the single transformation that maps triangle A onto triangle B

Answers

Answer:

  reflection in the line y=4

Step-by-step explanation:

Triangle B is a mirror image of Triangle A. Point (-1, 4) is shared between the two figures, so is invariant in the transformation.

__

Triangle B is a reflection of Triangle A in the horizontal line y=4.

A line plot with Kelly's lengths of ribbons is shown

What is the total length, in inches, for all pieces of ribbon?

Answers

Add all of the x’s up you get 223.8

Answer: (I changed it back to fraction form instead of decimal because it seems that is how you are doing it)

Two possible lengths of ribbon (In inches) are 25 and 133  3/4

Step-by-step explanation

Okay, so- First, You need to find out how much ribbon is there before the two additional ones are added. Like this:

12 + 14  2/4 + 14  3/4 = 41  1/4

Next, subtract that amount from 200 to get the number of inches of ribbon that are needed to get 200 inches of ribbon. Like this:

(I changed it to a decimal to make it easier, so don't mind that)

200 - 41.25 = 158.75

So, 158.75 inches of ribbon are needed to get 200 inches. You can subtract any number less than 158.75 from that to get two seperate ribbon measurements.

(This might sound confusing so here)

For example:

158.75 - 25 = 133.75 (The bolded numbers are the two measurements)

158.75 - 65 = 93.75

So, Two possible lengths (in inches) of ribbon that kelly could have added are "25" and "133.75 "

Two possible lengths (in inches) of ribbon that kelly could have added are also "65" and "93.75"

Hope this helps! Please tell me if you have any questions!

Find the key features of the equation and graph it. (Can you explain how to find them and not just the answers please)

Answers

Given a function in a table or in algebraic or graphical form, identify key features such as x- and y-intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; and end behavior. Use key features of an algebraic function to graph the function.

find f(3) when f(x)=2x+5

Answers

Answer:

f(3) = 11

Step-by-step explanation:

Substitute x=3 into the equation so:
f(3) = 6+5

f(3) = 11

        [tex]\rule{50}{1}\large\blue\textsf{\textbf{\underline{Question:-}}}\rule{50}{1}[/tex]

        find f(3) when f(x)=2x=5

[tex]\rule{50}{1}\large\blue\textsf{\textbf{\underline{Answer and how to solve:-}}}\rule{50}{1}[/tex]

      Write 3 in lieu of x and simplify:-

                           [tex]\Large\text{f(3)=2(3)+5}[/tex]

     [tex]\bigstar[/tex] On simplification,

                          [tex]\Large\text{f(3)=6+5}[/tex]

[tex]\bigstar[/tex] Which results in

                         [tex]\Large\text{f(3)=11}[/tex]

Good luck with your studies! :-)

      [tex]\rule{50}{1}\smile\smile\smile\smile\rule{50}{1}[/tex]

What is the area of the equilateral triangle, rounded to the nearest tenth? 2.7 cm2 4.1 cm2 16.2 cm2 24.2 cm2

Answers

The area of the equilateral triangle with the given perimeter is 24.2cm².

Hence, option D)24.2cm² is the correct answer.

This question is incomplete, the complete question is:

An equilateral triangle has an apothem measuring 2.16 cm and a perimeter of 22.45 cm. What is the area of the equilateral triangle, rounded to the nearest tenth?

What is a triangle?

A triangle is simply a two-dimensional polygon with 3 sides and 3 interior angles.

An equilateral triangle is a triangle with all its three sides having the same length

The area of an equilateral triangle is expressed as;

A = ((√3)/4)a²

Where a is the length of the side

Perimeter of an equilateral triangle is expressed as;

P = 3a

Where a is the length of the side

Given that the perimeter of the equilateral triangle is 22.45 cm, the sides of the triangle will be;

P = 3a

22.45cm = 3a

a = 22.45cm / 3

a = 7.48cm

Now, the area of the equilateral triangle will be;

A = ((√3)/4)a²

A = ((√3)/4) × (7.48cm)²

A = 0.433 × 55.9504cm²

A = 24.2cm²

The area of the equilateral triangle with the given perimeter is 24.2cm².

Hence, option D)24.2cm² is the correct answer.

Learn more about triangles here: brainly.com/question/19305981

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help pls pls pls pls pls pls

Answers

Answer:

63

Step-by-step explanation:

(1/2) · b · h

(1/2) *  14 * 9 = 63

Answer: 63 in²

Step-by-step explanation:

      The problem gives us the formula to use. We will simplify plug in the correct values and solve.

b = base

h = height

[tex]\displaystyle \frac{b*h}{2}[/tex]

[tex]\displaystyle \frac{14*9}{2}[/tex]

[tex]\displaystyle \frac{126}{2}[/tex]

63

       63 square inches


8) An extremely handsome math teacher is on African
Safari and sees a hungry lion that just spotted a zebra
headed towards a river. He knows that the lion's top
speed is about 45 feet per second and the zebra's about
40 feet per second. It looks like the Zebra is about 200
feet from the river and the Lion is about 220 feet from the
river.
Complete the table to represent each animals distance
a) Is it good news for the zebra?
b) Write an equation to describe the lion's situation.
c) Write an equation to describe the zebra's situation.

bro i will give you 50 pts

Answers

Answer:

One less zebra

Step-by-step explanation:

T        z        l

0       200   220

1         160    175       (subtract 40 from 200  and 45 from 220)

2        120    130

3         80      85

4         40  =  40      <===== lion has zebra lunch before the river is reached

Zdistance = 200 - 40s

Ldistance = 220 - 45 s            where  's' is seconds

the company sells laundry soap in boxes, 4 inches by 8
inches by 12 inches. The company wants to offer larger economy size boxes.
uit in ea
a. What changes in dimensions would give a box with double the volume?

Answers

8x8x12 would give the box double the volume

2.96 , 3 and 1/5 , 3.48 , 3 and 1/4 greatest to least

Answers

Answer:

3 , 2.96 , 1/5 (0.2)  
3.48 , 3 , 1/4 (0.25)

Step-by-step explanation:

descending order

What is the mode of the data represented in this line plot?

Enter your answer in the box.

Answers

Answer:

2

Step-by-step explanation:

Hey there!

In order to find the mode, you need to find the number thatis plotted the most

As you can see on the line plot, the number 2 has been plotted more than the other numbers

Meaning, that 2 is the mode

Answer:

2

Step-by-step explanation:

:)

what does the equation 7x^2-3y^2-x+2y+4=0 represent
a)circle
b)ellipse
c)hyperbola
d)parabola

Answers

Answer:

Circle

Step-by-step explanation:

because a hyper bole is (y-k) 2b2 -(x-h) 2a2=1

ellipse is = (x-h) 2a2 + (y-k) 2b2 = 1

parabola is y= a (x-h) 2+ k

that's why circle is the answer

Seventy percent of the class is present. There are 14 kids present. How big is the whole class?

Answers

Answer:

20

Step-by-step explanation:

Find 30% of the class
then add it

30% x 14 / 70% = 6

6 + 14 = 20 kids
Hope it helped ! Have a nice day !

we know that 14 is 70%, how much will it be for 100%? or namely the whole class?

[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} 14 & 70\\ x& 100 \end{array} \implies \cfrac{14}{x}=\cfrac{70}{100}\implies \cfrac{14}{x}=\cfrac{7}{10} \\\\\\ 140=7x\implies \cfrac{140}{7}=x\implies 20=x[/tex]

Polly bought a new collar and leash for her dog. The total was $7.50. She paid with a ten-dollar bill.

How much change did she receive? $

Answers

she got back $2.50 hope this helped

Juan manages a restaurant which is currently hiring. On Tuesday he interviewed 3 waiters, 2 chefs, and 4 dishwashers. On Wednesday he interviewed 4 waiters, 4 chefs, and 4 dishwashers. Each day one woman applied for a job while the rest were men. What is the probability that the woman shared the same profession?

Answers

Probability helps us to know the chances of an event occurring. The probability that the woman shared the same profession is 0.334.

What is Probability?

Probability helps us to know the chances of an event occurring.

[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}[/tex]

The probability of both being a waiter is,

P(Both Waiter) = (3/9)×(4/12) = 1/9

The probability of both being chefs,

P(Both Chef) = (2/9)×(4/12) = 2/27

The probability of both being a Dishwashers,

P(Both Dishwasher) = (4/9)×(4/12) = 4/27

Thus, the probability that the woman shared the same profession is,

Probability = P(Both Waiter) + P(Both Chef) + P(Both Dishwasher) = 0.33

Hence, the probability that the woman shared the same profession is 0.334.

Learn more about Probability:

https://brainly.com/question/795909

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What is radius? Help me out.

Answers

Answer:

Radius is half the diamiter of a circle, basically the whole length from one point of the circle to the middle.

Answer:

Radius is how far the middle of the circle is from the edge of the circle.  For example, we know that a circle has a middle point and we know that we have a line around it in the shape of a circle.  The radius would be the distance from the middle point to the outer line of the circle.

can someone help with this question?

Answers

Answer:

c=5.50b

Step-by-step explanation:

Answer:

5.50 x b = c or 5.50b = c

Step-by-step explanation:

5.50 is the base amount, with B amount of necklaces.
Also please refrain from cheating on the CAT test.. especially in 6th grade.

A copper pipe has an outside radius of 3 centimeters. The pipe is 200 centimeters long and the copper is 0.2 centimeters thick, so there is a cylindrical hole through the center of the pipe. What is the volume of the copper used to make the pipe

Answers

The volume of the copper used to make the pipe is 25.12 cm³.

To calculate the volume of the copper used to make the pipe, we use the formula below.

Formula:

V = πht²................ Equation 1

Where:

V = Volume of the copperh = Length of the copper pipet = Thickness of the copper pipeπ = Pie

From the question,

Given:

h = 200 cmt = 0.2 cmπ = 3.14

Substitute these values into equation 1

V = 200(3.14)(0.2²)V = 25.12 cm³

Hence, the volume of the copper used to make the pipe is 25.12 c

Learn more about volume here:

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