what number must you add to complete the square? x^2-7

Answer:

8x + 5

Step-by-step explanation:

3x + 5x+(3+2)​

Combine like terms

8x + 5

Answer:

8x+5

Step-by-step explanation:

This is a expanded expression so all you have to do is simplify.

Combine like terms:

3x + 5x = 8x

3+2=5

Therefore your answer is 8x+5

Hope this helps!

Answer:

224 points.

Step-by-Step Explanation:

We know that Andrew scores 16 points per basketball game.

He continues scoring the same amount of points for 14 more games.

Therefore, the total amount of points he will score in total will be 16 multiplied by 14.

Since 16 times 14 is 224, this means that Andrew will score 224 points in total.

Answer:

0.0471

Step-by-step explanation:

Here, we want to find the area of the shaded region.

The area of the shade region = 1- area of the unshaded region

The area of the unshaded region is as follows;

P(b) - P(a)

and that is;

P(-1.88<x<2.12) = 0.95294 from z table

So the area of the shaded region = 1-0.95294 =

0.04706 = 0.0471 to 4 d.p

Answer:

The correct option is;

A. 90 degrees clockwise rotation

Step-by-step explanation:

From the given information, we have;

The coordinates of the pre-image is K(-6, 9)

The coordinates of the image is k'(9, 6) which is similar to a transformation of a pre-image of (x, y) to an image of (y, -x)

The transformation from (x, y) to (y, -x) can be obtained from either;

1) A rotation of 90° (clock wise)

2) A rotation of 270° counter clockwise

Therefore, the correct option that maps K(-6, 9) to K'(9, 6) is a 90 degrees clockwise rotation.

Answer: The person above me is correct!  A. 90 degrees clockwise rotation

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

Adjacent angles have a common side and no common interior points.

Answer:

The answer is B: (x-32)

Answer:

B

Step-by-step explanation:

ape.x

Answer: 40 stamps

Step-by-step explanation:

Let Maddy = M and Simon = S

Given that maddy had twice as many stamps as simon. That is,

M = 2S ....(1)

After maddy sold 60 stamps, simon had twice as many stamps as maddy. That is,

S = 2( M - 60) .... (2)

Substitutes M for 2S from equation (1) into equation (2)

S = 2( 2S - 60 )

Open the bracket

S = 4S - 120

Collect the like terms

S - 4S = -120

- 3S = - 120

S = 120/3

S = 40

Substitute S into the equation (1)

M = 2 × 40 = 80

Maddy has 80 - 40 = 40 stamp

Therefore, Maddy has 40 more stamps than simon in the beginning.

Answer:

7 red marbles

Step-by-step explanation:

P( red) = red marbles / total marbles = 1/8

We know there are 56 marbles

red marbles/56 = 1/8

Multiply by 56

red marbles = 1/8 *56 = 7

There are 7 red marbles

Answer:

d None of these choices are correct.

Step-by-step explanation:

In ΔRED and ΔTAN

∠R ≅ ∠T... (given)

∠E ≅ ∠A... (given)

ED ≅ AN... (required)

Therefore, ED ≅ AN is needed to prove ΔRED ≅ ΔTAN by AAS Postulate.

Answer:

6x to find x on it's own you need to divide by the number infront,

Step-by-step explanation:

Answer:

[tex](25x + 8)(x + 2)[/tex]

Step-by-step explanation:

[tex]25x^{2} + 58x + 16 = 25x^{2} + 50x + 8x + 16 = 25x(x + 2) + 8(x + 2) = (25x + 8)(x + 2)[/tex]

Answer:

47%

Step-by-step explanation:

The total number of student is 4+6+2+2+3+4+6+3 = 30 students

P( male) = male / total

              = (4+6+2+2)/ total

               =14/30

                =.466666666

                46.66666%

To the nearest whole percent

                 47%

Step-by-step explanation:

The formula the amusement parc use is  100y-39000=55(x-800)

The slope intercept form of a function is wriiten generally as:

y = mx+c

Let's rewrite our equation in the precedent form

The slope intercept form of this equation is:

y= 0.55x-50

Answer:

y=55x+38992

Explanation:

You have to turn the equation into the form y=mx+b

Step 1: Get y by itself(divide both sides by 100)

100y-39,000=55(x-800)

100/100y-39,000=55(x-800)/100

y-39,000=55(x-800)/100

Step 2: Get y by itself(+ 39000 to both sides)

y-39,000=55(x-800)/100

 +39,000=55x-800/100+39,000

y=55x-800/100=39,000

Step 3: Simplify

y=55x+38992

Answer:

Rectangular fence dimensions:

x = 14 ft

w = 7  ft

A  = 98 ft²

Step-by-step explanation:

Rectangular fence dimensions:

x   length      and     w  width

Then   x  =  2*w      ⇒     w = x/2

Perimeter is

p = 2*x + 2*w

p = 2*x + 2* x/2

p = 2*x + x

3*x = 42

x = 14  ft      and     w = 14/2      ⇒     w = 7  ft

The proofing is as follows:

Given that,

|LO|=|MN| and |LM|=|ON|

It means that  Opposite sides of a parallelogram are equa

Now, LN⊥OM

So,

∠LPO = ∠NPO = 90° ( by definition of perpendicular lines)

LPO ≅ ∠NPO (by definition of congruent angles)

|LP|=|PN| (diagonals of a parallelogram bisect each other)

based on this LMNO is a rhombus

Learn more: https://brainly.com/question/10046743?referrer=searchResults

Answer:

All right angles are congruent

Reflexive property

Opposite sides of a parallelogram are congruent

Step-by-step explanation:

That what i got on my assignment

Answer:

y varies inversely with x is written as

y = k /x

where k is the constant of variation

y = 8 x = 1.55

8 = k / 1.55

Multiply through by 1.55

k = 12.4

The formula is

y = 12.4 / x

when y = - 0.62

- 0.62 = 12.4/x

- 0.62x = 12.4

Divide both sides by - 0.62

x = 12.4/-0.62

x = - 20

When y = - 0.62 x = - 20

Hope this helps

Answer:

-12

Step-by-step explanation:

(-3)(-2)[-4-(-2)]

6[-4-(-2)]

6[-2]

-12

Answer:

The three trigonometric ratios can be used to calculate the size of an angle in a right-angled triangle

Use rule ; SOHCAHTOA .Where sin x = opp/hyp

cos x = adj/hyp

tan x= opp/adj

Substitute the given values for the three sides

into any of the above rules

[tex]example = Hyp = 2\\opp = 1\\sin- x = 1/2\\x = sin^{-1} 1/2\\x = 30[/tex]

Step-by-step explanation:

I Hope It Helps :)

Answer:

In equal roles, men and women will establish more meaningful marriages.

Step-by-step explanation:

Marry Wollstonecraft in her feminist philosophy "A Vindication of the Rights of Woman" had projected the idea of equalizing the rights of men and women. She builds her argument against the theorists who do not consider education to be important for the female gender of the society. She presents her point by giving instances of how the education of women is indirectly related to the upliftment of the entire society. Wollstonecraft urges for equal fundamental rights to be shared by both men and women. An educated woman not just helps to become a good 'companion' of her husband but also raises her children in an efficient way.

Answer:

$11

Step-by-step explanation:

[tex]\left\begin{array}{c|ccc}&$Lose \$25&$Gain \$5&$Gain \$45\\$Stock ABC&40\%&15\%&45\%\end{array}\right[/tex]

We want to calculate the expected gain or loss of Stock ABC with the probabilities above.

Note that loss is written in negative.

[tex]E$xpected Value =$ (-25 \times 40\%)+(5 \times 15\%) + (45 \times 45\%)\\=(-25 \times 0.4)+(5 \times 0.15)+(45 \times 0.45)\\=-10+0.75+20.25\\=\$11[/tex]

Stock ABC has an expected gain of $11.

Answer:

Hey there!

Let x be the price he paid for.

2x-8=34

2x=42

x=21

He bought the stock for 21 dollars.

Hope this helps :)

Answer:

The price per share  when he bought it was 21

Step-by-step explanation:

Let x = price he paid for the stock

34 = 2x-8

Add 8 to each side

34+8 = 2x-8 +8

42 = 2x

Divide by 2

42/2 = 2x/2

21 = x

The price per share  when he bought it was 21

Answer:

  $52.46

Step-by-step explanation:

We are told that ...

  8.75% · purchase = $4.59

Dividing by the percentage, we have ...

  purchase = $4.59/0.0875 = $52.46

Yasmin's pre-tax total was $52.46.

Answer:

the correct answer is b aka 52.46

Answer:

a. 800 litros

b. 500 litros

Step-by-step explanation:

Aquí, se nos dice que 1/4 del total se usa para lavar la ropa.

Lo que queda sería 1-1 / 4 = 3/4 Fuera de esto, 5/6 se usa para cocinar.

La fracción utilizada para cocinar es 5/6 * 3/4 ​​= 15/24 = 5/8

Y todavía nos quedan 100 litros.

La cantidad utilizada ya sería 1/4 + 5/8 = (2 + 5) / 8 = 7/8

Entonces la fracción no utilizada = 1-7 / 8 = 1/8

Ahora, es este 1/8 que corresponde a 100 litros.

Digamos que el volumen total es x litros inicialmente, Eso significa 1/8 * x = 100 x / 8 = 100 x = 800 litros

La fracción utilizada para cocinar es 5/8 del total, por lo que el valor sería 5/8 * 800 = 500 litros

Answer:

x = 11

Step-by-step explanation:

The Frequency column has to total 50 ( number of rolls on dice )

Thus total the given frequencies and equate to 50, that is

12 + 8 + 7 + 3 + 9 + x = 50

39 + x = 50 ( subtract 39 from both sides )

x = 11

Answer:

x=11

Step-by-step explanation:

12+8+7+3+9=39

50-39= 11

Hey there! :)

Answer:

25 pieces.

Step-by-step explanation:

To solve for the amount of pieces that can be cut, we must divide fractions:

15 ÷ 3/5 = x

When dividing fractions, you must multiply by the reciprocal. Therefore:

[tex]\frac{15}{1}* \frac{5}{3} = \frac{75}{3} = 25[/tex]

Therefore, 25 pieces can be cut.

Answer:

25 3/5 inch long pieces

Step-by-step explanation:

If you have 15 inches and you cut it into less than inch pieces, you know for sure that it will be more than 15 but less than 30 because the peices are more than half an inch.

to find the answer, you divide 15 by 3/5 because each piece is 3/5 inches long

when you put this into a calculator 15/(3/5) you will get the answer 25.

So, ANSWER = 25 pieces of rope that are 3/5 inches long

Hope this helps and you will understand if you face a problem similar to this :)

Answer:

b) y = -x2 + 6x + 2

Step-by-step explanation:

Answer:

D - Infinite

Step-by-step explanation:

A Wheel is a circle and if we look at a circle's structure, we see it is always symmetric as long as it is divided from the center in any direction.

PLEASE MARK AS BRAINLIEST

Answer:

d

Step-by-step explanation:

have a good day

Answer:

$7.89

Step-by-step explanation:

There are 36 possible outcomes when rolling two dice.

The sum will be odd if the first die is odd and the second is even or if the second is odd and the first is even. The probability of an odd sum is:

[tex]P(odd)=\frac{3}{6} *\frac{3}{6} +\frac{3}{6} *\frac{3}{6}\\P(odd)=0.5[/tex]

There is a probability of 1 in 2 of winning $10.

There are 8 ways to get a sum of 4 or 8 (1,3; 3,1; 2,2; 5,3; 3,5; 2,6; 6,2; 4,4). There is a probability of 8 in 36 or 2 in 9 of winning $5.

There are 2 ways to get a sum of 2 or 12 (1,1; 6,6). There is a probability of 2 in 36 or 1 in 18 of winning $50.

Any other outcome will not payout any amount.

The expected value is the sum of all possible payouts multiplied by their likelihood (including a 100% chance of paying $1 to play).

[tex]E=-1+10*\frac{1}{2} +5*\frac{2}{9}+50*\frac{1}{18}\\E=\$7.89[/tex]

The expected value is $7.89.

Answer:

A

Step-by-step explanation:

First, let's do the difference of two squares:

[tex](1-cos^4(\theta))=(1-cos^2(\theta))(1+cos^2(\theta))[/tex]

Note that [tex]sin^2(\theta)=1-cos^2(\theta)[/tex] (Pythagorean Identity)

Thus, we can substitute:

[tex]sin^2(\theta)(1+cos^2(\theta))[/tex]

Now, and I'm serious, you just have to use your creativity. After a while, you will find that:

[tex]sin^2(\theta)+cos^2(\theta)=1[/tex]

So:

[tex]1+sin^2(\theta)+cos^2(\theta)=1+1[/tex]

Thus, we have [tex]1+cos^2(\theta)=2-sin^2(\theta)[/tex]

Now, we can substitute:

[tex]sin^2(\theta)(2-sin^2(\theta))=2sin^2(\theta)-sin^4(\theta)[/tex]