does anyone know this?

Answer:

I would recommend them to go out with their family and spend it because i feel that people always dream about ways to bring their family close again so that can be a good way to bond and do things that often cost a lot of money.

Step-by-step explanation:

Answer:

The estimate size of the crowd is 52800 people

Step-by-step explanation:

The given information are;

The number of people that fit comfortably in a 2 by 2 foot area = 5

Therefore, we have;

The area occupied by the 5 people = 2 × 2

The crowd ratio = 5/(2 × 2) = 5/4

The area occupied by the crowd = 4 feet deep, and 1 mile long on both sides of the street

By conversion factors, 1 mile = 5,280 feet

Therefore, the area occupied by the crowd = 4 × 5280 × 2 = 42240 ft²

The number of people in the crowd = Crowd ratio × The area occupied by the crowd

The number of people in the crowd = 5/4 × 42240 = 52800 people

Therefore, The estimated size of the crowd = 52800 people.

Answer:

Last given option is the correct answer:

"The product of complex conjugates is a sum of two squares and is always a real number."

Step-by-step explanation:

The product of two conjugates can be described and solved like this:

[tex](a + b\,i) \,(a - b\,i)= a^2-a\,b\.i+a\,b\,i-b^2\,i^2=a^2+0-b^2\,(-1)= a^2+b^2[/tex]

so, no matter what the values for the real values a and b are, the product is always a real number and the sum of two squares.

Answer:

(a + bi)(a – bi) = a2 – (bi)2 = a2 + b2

The product of a complex number and its complex conjugate is

✔ always

a real number.

Answer:

3

Step-by-step explanation:

2a + C

Let a = 2 and c = -1

2* 2 + -1

4 -1

3

Answer:

Step-by-step explanation:

[tex]a = 2\\ b = -3\\c = -1\\ d = 4\\\\2a+c =?\\2(2) +(-1)\\\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:2\left(2\right)\::\quad 4\\=4+\left(-1\right)\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:4+\left(-1\right)\:\\:\quad 3[/tex]

Answer:

20% more of cost price, or 30% more of initial selling price

Step-by-step explanation:

Given:

Total money to be obtained:

Money already got:

Money left to obtain:

Product left to sell, worth of:

The difference:

Required selling price increase:

Or compared to initial price, new SP to be increased by 30%

Answer:

59°

Step-by-step explanation:

From the question given, we obtained the following:

C + (3x + 16) = 180 (sum of angle on a straight line)

5x – 54 = 3x + 16 (Altanate angles are equal)

Next, we shall determine the value of x.

This can be obtained as follow:

5x – 54 = 3x + 16

Collect like terms

5x – 3x = 16 + 54

2x = 70

Divide both side by the coefficient of x i.e 2

x = 70/2

x = 35

Finally, we shall determine the value of C as shown below:

C + 3x + 16 = 180

But, x = 35

C + 3(35) + 16 = 180

C + 105 + 16 = 180

C + 121 = 180

Collect like terms

C = 180 – 121

C = 59°

Therefore, the value of C is 59°

Answer:

[tex]\frac{90}{5} i[/tex]

Step-by-step explanation:

10 * sqrt(81/25 * -1) = 10 sqrt(81/25) * sqrt(-1) = 10 *9/5 * i

Answer:

F(x-h) = x² + 2xh +h² +2

Step-by-step explanation:

F(x) = x² + 2, x∈R

F(x + h) = (x + h )² + 2 = x² + 2xh + h² + 2

Answer:

F ( x ) = x^2 + 2

Domain = R

F ( x - h ) = ( x - h )^2 + 2xh + h^2 + 2

Answer:

[tex]W(t) = 2t[/tex]

Step-by-step explanation:

Given

Weight = 2 pounds

Rate = monthly

Required

Determine the weight of the baby in t months

When the baby is 1 month old, t = 1;

[tex]Weight = 2\ pounds * 1[/tex]

[tex]Weight = 2\ pounds[/tex]

When the baby is 2 months old, t = 2;

[tex]Weight = 2\ pounds * 2[/tex]

[tex]Weight = 4\ pounds[/tex]

When the baby is t months old;

[tex]Weight = 2\ pounds * t[/tex]

[tex]Weight = 2t\ pounds[/tex]

Represent Weight as a function of t

[tex]W(t) = 2t[/tex]

Hence, the formula is [tex]W(t) = 2t[/tex]

Answer:

P = 26

Step-by-step explanation:

see attached

to get the side 5,

sqrt((10-7)² + 4²)

side = 5

P = 4 + 7 + 5 + 10

P = 26

Answer:

All (a,b) that satisfy a.b < 0 will make that statement false

Step-by-step explanation:

It is only right when:

|a-b| = |a| - |b|

<=> ( |a-b| ) ^ 2 = ( |a| - |b| ) ^ 2

<=> a^2 - 2ab + b^2 = a^2 - 2.|ab| + b^2

<=> ab = |ab|

<=> ab ≥ 0

So, when ab < 0, it's wrong

Answer:

0

Step-by-step explanation:

The y's are the same so they do not go up or down so the slope is 0.

The slope of the line passes through points (10, 3) and (2, 3) is 0.

Given that,
The slope of the line that passes through points (10, 3) and (2,3) is to be determined.

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.

here,
The slope of the line passes through the point (10, 3) and (2, 3).
Now, put the point in the equation of the slope,

m =(y₂ - y₁) /  (x₂ - x₁)
m = 3 - 3 / (2 - 10)
m = 0 / -8
m = 0

Thus, the slope of the line passes through the points (10, 3) and (2, 3) is 0.

Learn more about slopes here:
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Answer:

C

Step-by-step explanation:

So we have the expression:

[tex](x+y+3)\times(y+1)[/tex]

To multiply, use the distributive property. Multiply (y+1) to each term on the left:

[tex]=x(y+1)+y(y+1)+3(y+1)[/tex]

Distribute the variables:

[tex]=(xy+x)+(y^2+y)+(3y+3)[/tex]

Rearrange them to combine like terms:

[tex]=y^2+xy+y+3y+x+3\\=y^2+xy+4y+x+3[/tex]

The correct answer is C.

Edit: Typo

[tex](x+y+3)\cdot(y+1)=\\\\=(x+y+3)\cdot y+(x+y+3)\cdot1=\\\\=xy+y^2+3y+x+y+3=\\\\=\boxed{y^2+xy+4y+x+3}[/tex]

Answer C.

Answer:

Option (2). Increasing x > 0; decreasing x < 0

Step-by-step explanation:

Equation of the parabola having vertex (0, 3) will be,

y = (x - 0)² + 3

y = x² + 3

To check the function is increasing or decreasing in the given intervals we will find the derivative of the function,

[tex]\frac{dy}{dx}=\frac{d}{dx}(x^{2}+3)[/tex]

y' = 2x

For x < 0 Or x = -1

y' = 2(-1)

  = -2 < 0

Therefore, function is decreasing in x < 0

For x > 0 Or x = 1

y' = 2(1) + 3

  = 5 > 0

Therefore, function is increasing in x > 0

Option (2) is the answer.

Answer:

Step-by-step explanation:

Function means that for each x we get y, and no no x gives two different y-es

{(−5,−7),(−5,4),(−2,−8),(3,5)}  for x = -5 we have two different y-es therefore its not function

Answer:

-$0.05

Step-by-step explanation:

The computation is shown below:

The loss case = -1

The win case = 11 + 17 + 1 = 17

Now the number of pairs could be formed from (1 to 356, 0, 00) i.e.

[tex]= \frac{38!}{2!36!}[/tex]

= 703

Now

Pr (x = 17) is

[tex]= \frac{1\times37}{703}\\\\ = \frac{37}{703}[/tex]

And, Pr (x = -1) is

[tex]= 1 - \frac{37}{703}\\\\ = \frac{666}{703}[/tex]

Now

E(x) = (-1) Pr (x = -1) + (17) Pr (x = 17)

[tex]= -1 \times \frac{666}{703} + 17 \times \frac{37}{703} \\\\ = \frac{-37}{703}[/tex]

= -$0.05

hence, the -$0.05 would be expected to win that associated with a $1 bet on two numbers

Answer:

The graph of a proportional relationship has the same unit rate, is a straight line, and starts at the origin.

Step-by-step explanation:

this the answer

The graph of a proportional relationship is a straight line.

The general equation of a straight line is -

y = mx + c

where -

[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.

Other possible equations of lines are -

For any function y = f(x), Domain is the set of all possible values of [y] that exists for different values of [x]. Range is the set of all values of [x] for which [y] exists.

We have a graph of Molly’s garden.

Since, the graph is not given, i will write the condition for proportional relationship. The graph of a proportional relationship is a straight line whose equation is given by -

y = mx + c

Therefore, the graph of a proportional relationship is a straight line.

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Answer:

f(12) = - 20

Step-by-step explanation:

To evaluate f(12), substitute x = 12 into f(x), that is

f(12) = - 2(12) + 4 = - 24 + 4 = - 20

The required value of function at x = 12 is f(12) = -20.

Given that,
A function is given,
f(x) = -2x + 4
The solution of the function at x = 12 is to be determined.

Functions is the relationship between sets of values. e g y=f(x), for every value of x there is its exists in set of y. x is the independent variable while Y is the dependent variable.

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
the given function is,
f(x) = -2x + 4

At x = 12
put x = 12 in the function
f(12) = -2 * 12 + 4
f(12) = -24 + 4
f(12) = -20

Thus, the required solution of the function at x = 12 is -20.

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Answer:

u= -3

Step-by-step explanation:Solve for

u by simplifying both sides of the equation, then isolating the variable.

Answer : 5u– 5(1–u)=u+8

5u - 5+ 5u = u+ 8

10u -5 = u+ 8

9u = 13

u = 1.44

110x=405

1*x^2 +1*x^1 +0*x^0=4*5^1+0*5^0

x^2+x=4*5

x^2+x=20

x^2+x-20=0

x^2 +5x-4x-20=0

x(x+5)-4(x+5)=20

(x-4)(x+5)=20

x= 4 or -5

But a base cannot be negative so

x=4

Answer:

she would have 21 dollars left

Step-by-step explanation:

44.50-11

33.50-12.50

Answer:

[tex]\Huge \boxed{\$ \ 21}[/tex]

Step-by-step explanation:

She had $-11 initially and gained $44.50.

-11 + 44.5 = 33.5

She has $33.5 in her account.

She buys two tickets for $6.25 each.

33.5 - (2)6.25 = 21

She has $21 left in her account.

Answer:

$218.70

Step-by-step explanation:

You need to first convert the percentage to the decimal.

20% = 0.2

Now, you need to find 20% of each bill by multiplying each bill by 0.2.

0.2(185.45) + 0.2(205.20) + 0.2(195.05) + 0.2(245.80) + 0.2(262.00)

Because of the distributive property, you can add up the bills and multiply the sum by 0.2.

0.2(185.45 + 205.20 + 195.05 + 245.80 + 262.00)

0.2(1093.50)

218.7

The waiter made $218.70 in tips.

Answer:

[tex]\Huge \boxed{\mathrm{C. \ 129 }}[/tex]

Step-by-step explanation:

Apply : Angles of Intersecting Chords Theorem

m∠x is half the sum of the measure of the arcs intercepted by the angle and its vertical angle.

m∠x = 1/2(54+204)

Add numbers in brackets.

m∠x = 1/2(258)

Expand brackets.

m∠x = 129

Answer:

Step-by-step explanation:

1) (1÷5)*5*14 = [tex]\frac{1}{5}*5*14[/tex] = 1*14 = 14

2) 6 + 4(19 - 5) = 6 + 4 * 14

                         = 6 + 56

                         =  62

Or

Use distributive property. a(b+c) = a*b + a*c

6 + 4( 19 - 5) = 6 + 4* 19 - 4*5

                    = 6 + 76 - 20

                    = 82 - 20

                   = 62

3) 5(14- 5) + 6 (3 +7) = 5 * 9 + 6 *10

                                 = 54 + 60

                                 = 114

136 - 56 = 80 songs kept

Ratio of songs kept to songs deleted is:

80:56

Simplify by dividing each number by 8:

The simplest form is: 10/7

Answer:

1/7

Step-by-step explanation:

From the above question, we have the following values:

White socks = 2

Brown socks = 4

Black socks = 2

Total number of socks = 8

We are told in the question that:

You randomly pick a sock and put it on your left foot and then pick another sock and put it on your right foot. You leave the house with a white sock on your left foot and a brown sock on your right foot.

From above question, we can see that this is a probability with dependent events. This means have a white sock on your left foot and brown sock on your right are events that depend on each other, hence, the probability will occur with replacement.

The probability ( having a white sock on your left foot and brown sock on right) =

2/8 × 4/7

= 8/56

= 1/7

Therefore, the probability of this occuring is 1/7

Answer:

125+2x=y   (take 125 add 2x for $2 a day and then = y for amount saved)

Points on Graph:

(125,0)

(135,5)

(145,10)

(155,15)

(165,20)

(175,25)

(185,30)

(195,35)

(205,40)

(215,45)

(225,50)

Answer:

Step-by-step explanation:

1.

[tex](3^3+5x^2+3x-7)+(8x-6x^2+6)=\\\\=27\ \underline{+\,5x^2}\ \underline{ \underline{+\,3x}}-7\ \underline{\underline{\,+8x}}\ \underline{-\,6x^2}+6=\\\\=-x^2+11x+26[/tex]

or if you mean (3x^3+5x^2+3x-7)+(8x-6x^2+6):

[tex](3x^3+5x^2+3x-7)+(8x-6x^2+6)=\\\\=3x^3\ \underline{+\,5x^2}\ \underline{ \underline{+\,3x}}-7\ \underline{\underline{\,+8x}}\ \underline{-\,6x^2}+6=\\\\=3x^3-x^2+11x-1[/tex]

2.

[tex](8x-4x^2+3)-(x^3+7x^2+3x-8)=\\\\=\underline{8x}\ \underline{\underline{-\ 4x^2}}+3-x^3\ \underline{\underline{-\,7x^2}}\ \underline{-\,3x}+8=\\\\=-x^3-11x^2+5x+10[/tex]