Questions on picture. Please help

Questions On Picture. Please Help

Answers

Answer 1

Answer:

A) 2

Step-by-step explanation:

We already know that [tex]i[/tex] equals -1, so we can substitute that into the expression.

[tex](\sqrt{3} +(-1))(\sqrt{3} -(-1))\\(\sqrt{3} -1)(\sqrt{3}+1)[/tex]

Now we can use the distributive property to solve the rest

[tex](\sqrt{3} -1)(\sqrt{3}+1)\\\sqrt{3} *\sqrt{3} +\sqrt{3} -\sqrt{3}-1\\ 3+0-1\\=2[/tex]

Hope this helps! I apologize if I get this incorrect.


Related Questions

Lea wrote a number riddle. Her clues were:

9 is 10 times the value of the 9 in 329,513
2 is 110 the value of the 2 in 7,562
6 is 110 the value of the 6 in 4.68
Which number is an answer to Lea's riddle?

Answers

Answer:

498,173.26

Step-by-step explanation:

CHOP CHOP PLZ HURRRYYYYY I WILL POST ONE MORE QUESTION FOR 20 POINTS AND BRAILY CHOP CHOP PLZ

Answers

Answer:

given, verticals angle thm, definition of supplementary, {you need to see the pic for it}, substitution, and you need to see the pic for the rest so i can’t help

can you go answer my question tho

Step-by-step explanation:


In the diagram, which of these must be true

Answers

Answer:

XYN is a right angle

explanation:

The correct answer is that Xyn is a right angle

PLEASE HURRY. An electrician charges $45 per hour plus a fixed charge of $30 which of these equations could be used to determine C, the cost an electrician charges for h hours of work?

Answers

$45 per hour plus a fixed change of $30

Here are two similar rectangles.
4 cm
4.8 cm
7 cm
Work out the area of the larger rectangle.

Answers

Answer:

[tex]40.32cm^{2}[/tex]

Step-by-step explanation

4*1.2=4.8

7*1.2=8.4

8.4*4.8=40.32

A rectangle is a two-dimensional shape where the length and width are different.

The length and width of the larger rectangle are 4.8 cm and 8.4 cm.

The area of the larger rectangle is 40.32 cm².

What is a rectangle?

A rectangle is a two-dimensional shape where the length and width are different.

The area of a rectangle is given as:

Area = Length x width

We have,

Two similar rectangles:

Smaller rectangles:

Length = 4 cm

Width = 7 cm

Larger rectangles:

Length = 4.8 cm

We need to find the width of the larger rectangle.

Since the two rectangles are similar.

4 cm = 4.8 cm

Multiply 7/4 on both sides.

7/4 x 4cm = 7/4 x 4.8 cm

7 cm = 8.4 cm

Now,

Larger rectangle:

Length = 4.8 cm

Width = 8.4 cm

Now,

The area of the larger rectangle:

Area = Length x width

Area = 4.8 x 8.4

Area = 40.32 cm²

Thus,

The area of the larger rectangle is 40.32 cm².

Learn more about rectangles here:

https://brainly.com/question/15019502

#SPJ5

If a turtle walks 24 meters in 30 minutes, about how many minutes will it take the turtle to walk 36 meters?

Answers

30/24= 1.25m per min

= 1.25×36= 45 minutes

In the function f (x) = = (x²-1) / (x-1), what happens if x takes the value of 1? Explain your answer.

Answers

Answer:

If x=1, then f(x)= undefined

Step-by-step explanation:

1*1=1

1-1=0

0/0

You can't divide by 0, so anything that is divided by 0 is undefined.

((1*1)-1)/(1-1)

(1-1)/(1-1)

0/0

0/0=Undefined

f(x)= undefined

Determine,se existir,a inversa da matriz abaixo:
A= (1 2)
(1 3)

Answers

Answer:

which principle prevents a brach from abusing  its power

Step-by-step explanation:

Find the missing side This is due in a hour

Answers

Answer:

The Arch is 630 ft tall

Step-by-step explanation:

How many kilograms did the elephant
weigh at birth?

Answers

Answer:

The option not listed

Step-by-step explanation:

The other options don't make sense when comparing it to the graph.

A sandwich is 2 12 feet long. You decide to cut the sandwich into pieces that are 1 14 feet long. How many pieces will you cut?

Answers

Answer:

Im assuming you meant 2 1/2 and 1 1/4, so the answer would be 2 pieces

Step-by-step explanation:

2 1/2-1 1/4=1 1/4, so 2

Using the division operation, the number of pieces of sandwich that can be cut is 2

Given the Parameters :

Length of sandwich = 2.5 feets

Length per piece cut = 1.25 feets

The number of pieces that can be cut out of the sandwich can be calculated thus :

Length of sandwich ÷ Length per piece cut

Number of pieces = (2.5 ÷ 1.25) = 2

Therefore, there are 2 pieces of sandwich that can be cut.

Learn more : https://brainly.com/question/14429071

Evaluate the following algebraic expression for the given value of the variable ​

Answers

Answer:

[tex]\boxed{8}[/tex]

Step-by-step explanation:

-Solve the following expression when [tex]x = 4[/tex]:

[tex]\frac{5x + 12}{4}[/tex]

-Apply the value of [tex]x[/tex] onto the equation:

[tex]\frac{5x + 12}{4}[/tex]

[tex]\frac{5(4)+ 12}{4}[/tex]

-Multiply both the [tex]5[/tex] and [tex]4[/tex]:

[tex]\frac{5(4)+ 12}{4}[/tex]

[tex]\frac{20+ 12}{4}[/tex]

-Add both [tex]20[/tex] and [tex]12[/tex]:

[tex]\frac{20+ 12}{4}[/tex]

[tex]\frac{32}{4}[/tex]

-Divide [tex]32[/tex] by [tex]4[/tex]:

[tex]\frac{32}{4}[/tex]

[tex]\boxed{8}[/tex]

So, therefore, the final answer is [tex]8[/tex].

Answer:

Step-by-step explanation:

My answer is 8!!!

If x is equal to 4 then 5x4=20 because if there is no sign then that means that you have to multiply, then you add 20 and 12 which is equal to 32, And then you simplify 4 which equals 8, or you can think of dividing 32 and 4 which is also 8.

What is the slope of the line shown below?
A. -2/3
B.-3/2
C. 3/2
D. 2/3

Answers

Answer:

-2/3

Step-by-step explanation:

I need help solving these problems.

Answers

I can’t see the picture very well

What is 1/100 of 1.9 ?

Answers

Answer:

0.019

Step-by-step explanation:

1/100 = 1%

Do 1% of 1.9

and you get =

0.019

Hope this helps! <3

Answer:

0.019

Step-by-step explanation:

1/100=0.01

0.01×1.9=0.019

find the equation of the line shown
how do you do this ?

Answers

Answer:

y=1/2x+0.5

Step-by-step explanation:

The slope is 1/2, which you can see by looking at the change of y/x. The y intercept is 0.5, which can be seen on the y axis.

please help! thank you!

Answers

Answer:

I believe the answer is c not a hundred percent sure

Gregoria borrowed $2,450, to be paid back at 3.5% simple interest. She repays $3221.75. How many years was the loan period?

Answers

Answer:

90.7yrs.  

Step-by-step explanation:

Given parameters:

Amount borrowed  = $2450

Interest rate  = 3.5%

Amount repaid = $3221.75

Unknown:

Number of years the load was paid  = ?

Solution:

The formula of simple interest;

    I = PRT

Where I is the interest

           P is the principal

          R is the rate

          T is the time

  To find the interest;

    Interest = Amount paid back - loan  = 3221.75 - 2450  = 771.75

Now;

     P = IRT

     2450  = 771.75 x [tex]\frac{3.5}{100}[/tex]  x T

     2450 = [tex]\frac{2701.25T}{100}[/tex]

    T = [tex]\frac{245000}{2701.125}[/tex]   = 90.7yrs

The number of years of the loan period was 90.7yrs.  

Triangle ADB is congruent to triangle ? Please HELP!!

Answers

Answer:

CBD

Step-by-step explanation:

pls help me with this i will give crown

Answers

Answer:

C

Step-by-step explanation:

The easiest way to solve this would be to find the difference between the numbers. We can do [tex]-3-(-9)[/tex] to find the difference of [tex]6[/tex]. We can then make sure this is true for the rest of the sequence by adding 6 to each number.

[tex]-9+6=-3[/tex]

[tex]-3+6=3[/tex]

[tex]3+6=9[/tex]

[tex]9+6=15[/tex]

Now that we've verified that this is true, we know the answer is C

Answer:

u on go to padlet now

Step-by-step explanation:

(please help I will give brainlist) Twenty students tried out for the basketball team. Sever were selected. What is the ratio of students selected to those trying out?

Answers

Answer:

7:20

Step-by-step explanation:

35% of the students made the team

Answer:

7:20

Step-by-step explanation:

hope this helps :)

which polynomial function has zeros when x= -2, 3/4, 5

Answers

Answer: f(x)=(x+2)(4x-3)(x-5)

Step-by-step explanation:

Alg2.2.5 practice 2

Polynomial function has zeros when  x=[tex]-2, \frac{3}{4} , 5[/tex] is

[tex]4x^3-15x^2-31x+30[/tex]

Given :

polynomial function has zeros when x= -2, 3/4, 5

Lets write the zeros in factor form

If 'a' is a zero , then factor is (x-a)

The given zeros are [tex]-2, \frac{3}{4} , 5[/tex]

lets write all the three zeros in factor form

[tex](x-(-2)) (x-\frac{3}{4})(x-5)\\(x+2)(4x-3)(x-5)[/tex]

Now multiply the parenthesis to get the polynomial

[tex]\left(x+2\right)\left(4x-3\right)\left(x-5\right)\\\left(4x^2+5x-6\right)\left(x-5\right)\\4x^2x+4x^2\left(-5\right)+5xx+5x\left(-5\right)-6x-6\left(-5\right)\\combine \; like \; terms\\4x^3-15x^2-31x+30[/tex]

polynomial function has zeros when x= -2, 3/4, 5 is

[tex]4x^3-15x^2-31x+30[/tex]

Learn more : https://brainly.com/question/21970844

For a recent season in college football, the total number of rushing yards for that season is recorded for each running back. The mean number of rushing yards for the running backs that season is 790 yards. One running back had 1,637 rushing yards for the season, which is 2.42 standard deviations above the mean number of rushing yards. What is the standard deviation of the number of rushing yards for the running backs that season?

(A) 250 yards

(B) 300 yards

(C) 350 yards

(D) 400 yards

(E) 450 yards

Answers

Answer:

(C) 350 yards

Step-by-step explanation:

From available information

Mean = 790

1 running back = 1637 yards

Standard deviation above mean = 2.42

Using formula

z =( x - mean)/sd

2.42 = (1637-790)/sd

2.42 = 847/sd

We cross multiply

2.42sd = 847

Divide through by 2.42

Sd = 847/2.42

Sd = standard deviation = 350

So our answer is 350 and therefore option c.

Name the remainder for the quotient and describe or show how you found the remainder.

Answers

Answer:

remainder = 0

Step-by-step explanation:

Using the remainder theorem

If f(x) is divided by (x - h) then the remainder is f(h)

Here f(x) = x³ - x² - 17x - 15 and h = 5 , thus

f(5) = 5³ - 5² - 17(5) - 15 = 125 - 25 - 85 - 15 = 0 ← remainder

Since remainder is zero then (x - 5) is a factor of f(x)

Jordan created a scale drawing of a rectangular room. The drawing is 8 inches long by 6 inches wide. He used a scale of 1 inch - 3 feet. What is the area, in square feet,

Answers

Answer: 144 feet

Step-by-step explanation:

Well solving for area you multiply length times wedth. So multiply 8 and 6 to get 48. Now you have to convert 48 inches into feet. So just multiply 48 times 3 to get 144.

what situation could -16/4 represent?

Answers

Answer:

I would say C

Step-by-step explanation:

Since two negatives make a positive

who can answer this gets all my points, and I'm not giving you five.
Got it!?
answer!
please....plz​

Answers

Answer:

Spaces are as below:

1. 122. 36 (as 12*3= 36)3. 12 (as 12/1= 12)4. 12 (as 36/3= 12)5. Equal (or same whatever is close)6. Is7. y = 12x

HELPPPP!!!
The LCM of 50, 120, and 225 is 5.


True or False

Answers

False, the LCM of 50, 120 and 225 is 1800.

5 is the GCF of 50 120 and 225, not the LCM.

Hope it helps!

Answer:

The answer is False

Step-by-step explanation:

5 is the smallest number that can fit into all 3 numbers.

A sign company charges $28 per yard for each custom-made banner. Ms.Gill orders two banners that are each 1 7/8 yards long, and one banner that is 2 5/8 yards long. What will Ms.Gill pay for all three banners?

Answers

Answer:

%178.50

Step-by-step explanation:

$52.50+$73.50=$126

$126+$52.50=

$178.50 for all three banners

Write an equation for the problem. Use n for the variable. *
$5 less than the amount Steven has is $25.

Answers

Answer:

[tex]the \:equation \: for \: the \: problem \: is : \\ n - 5 = 25. \\ and \: the \: value \: of \: n \: is \: 30.[/tex]

Step-by-step explanation:

[tex]if \: n \: is \: the \: variable, \: then : \\ n - 5 = 25 \\ n = 30.[/tex]

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