State whether the slopes would represent parallel lines, perpendicular lines, or neither.
-4 and 1/4
8 and -8
7 and 17
2 and 2

Answers:

   16.50     for the first box

    10         for the second box

======================================

Explanation:

Part (a)

Plug in x = 20 and solve for p.

0.2x+4p = 70

0.2*20+4p = 70

4 + 4p = 70

4p = 70-4

4p = 66

p = 66/4

p = 16.50

They should charge $16.50 per gallon if the demand is 20 million gallons.

------------------------

Part (b)

Let's say the price is initially $10 per gallon. The starting price could be anything you want.

Plug p = 10 into the equation and solve for x.

0.2x+4p = 70

0.2x+4*10 = 70

0.2x + 40 = 70

0.2x = 70-40

0.2x = 30

x = 30/(0.2)

x = 150

The demand is 150 million gallons if the price were $10 per gallon.

Now let's increase the price by $0.50 to get to p = 10.50

Let's solve for x based on this larger value of p.

0.2x+4p = 70

0.2x+4*10.50 = 70

0.2x+42 = 70

0.2x = 70-42

0.2x = 28

x = 28/(0.2)

x = 140

The demand is now 140 million gallons if the price were $10.50 per gallon.

The demand has gone down by 10 million gallons (since 150-140 = 10).

Answer: (0,0)

Step-by-step explanation:

[tex]\displaystyle\\\left \{ {{(x-2)^2+y^2=4} \atop {(x+2)^2+y^2=4}} \right. \\Hence,\\(x-2)^2+y^2=(x+2)^2+y^2\\(x-2)^2=(x+2)^2\\x^2-2*x*2+2^2=x^2+2*x*2+2^2\\-4x=4x\\-4x+4x=4x+4x\\0=8x\\[/tex]

Divide both parts of the equation by 8:

[tex]0=x[/tex]

Hence,

[tex](0+2)^2+y^2=4\\2^2+y^2=4\\4+y^2=4\\y^2=0\\y=0\\Thus,\ (0,0)[/tex]

Answer:

The two circles intersect at one and only point A(0 , 0)

Step-by-step explanation:

Let ς₁ be the circle of equation :

ς₁ : (x - 2)² + y² = 4

and ς₂ be the circle of equation :

ς₂ : (x + 2)² + y² = 4 

Consider the point M (x , y) ∈ ς₁∩ς₂

M  ∈ ς₁ ⇔ (x - 2)² + y² = 4

M  ∈ ς₂ ⇔ (x + 2)² + y² = 4

M (x , y) ∈ ς₁∩ς₂ ⇒ (x - 2)² + y² = (x + 2)² + y²

⇒ (x - 2)² = (x + 2)²

⇒ x² - 4x + 4 = x²+ 4x + 4

⇒  - 4x = 4x

⇒  8x = 0

⇒  x = 0

Substitute x by 0 in the first equation:

(0 - 2)² + y² = 4

⇔ 4 + y² = 4

⇔ y² = 0

⇔ y = 0

Conclusion:

The two circles intersect at one and only point A(0 , 0).

The total cost = $5000 (Option A) and $9400 (Option B)

Cost per mile = $0.33 (option A) and $0.25 (Option  B)

A single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method.

Given:

To find: Total costs and cost per mile, when the truck is driven (A) 15000 miles per year (B) 37000 miles per year.

Finding:

(A) By unitary method,

When the truck is driven 1 mile, cost of gasoline = $0.20

When the truck is driven 15000 miles, cost of gasoline = $ 0.20(15000) = $3000 in an year

Cost of insurance in an year = $2000

Thus, total cost = $ 3000 + $2000 = $5000

Now, for per mile cost:

Cost of gasoline = $0.20

Cost of insurance = $0.13

Thus, Cost per mile = $0.20 + $0.13 = $0.33

(B) Again, by unitary method,

When the truck is driven 1 mile, cost of gasoline = $0.20

When the truck is driven 37000 miles, cost of gasoline = $ 0.20(37000) = $7400 in an year

Cost of insurance in an year = $2000

Thus, total cost = $ 7400 + $2000 = $9400

Now, for per mile cost:

Cost of gasoline = $0.20

Cost of insurance = $0.5

Thus, Cost per mile = $0.20 + $0.5 = $0.25

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Answer:

See below

Step-by-step explanation:

For x :    from end point to midpoint  0====> 4    is 4 units ...add 4 more to get   x = 8 for other endpoint

For y    5====> -4   is - 9     add  -9 more to midpoint to get y = -13

To one decimal place, round. points A(-4, 6), B(3, -7), E(-6, -5) and F (2, 0).

The distance between AB is [tex]\sqrt{185}[/tex]=13.601 and EF is [tex]\sqrt{89}[/tex]=9.433.

Given that,

To one decimal place, round.

A(-4, 6), B(3, -7), E(-6, -5) and F (2, 0).

We have to find the distance between two points that are AB and EF.

1. The distance between 2 points A and B.

A(-4, 6) and B(3, -7).

Distance formula is [tex]\sqrt{(x_{2} -x_{1} )^{2} +(y_{2} -y_{1} )^{2} }[/tex]

Here, x₁=-1,x₂=3 and y₁=6,y₂=-7

After substituting we get,

[tex]\sqrt{{(3 -(-1)} )^{2} +(-7 -6 )^{2} }\\[/tex]

[tex]\sqrt{{(3 +1} )^{2} +(-7 -6 )^{2} }\\[/tex]

[tex]\sqrt{{(4} )^{2} +(-13 )^{2} }\\[/tex]

[tex]\sqrt{16 +163}\\[/tex]

[tex]\sqrt{185}[/tex]

13.601

Therefore, the distance between AB is [tex]\sqrt{185}[/tex]=13.601.

2.The distance between 2 points E and F.

E(-6, -5) and F (2, 0).

Distance formula is [tex]\sqrt{(x_{2} -x_{1} )^{2} +(y_{2} -y_{1} )^{2} }[/tex]

Here, x₁=-6,x₂=2 and y₁=-5,y₂=0

After substituting we get,

[tex]\sqrt{{(2 -(-6)} )^{2} +(0 -(-5) )^{2} }\\[/tex]

[tex]\sqrt{{(2 +6} )^{2} +(0 +5 )^{2} }\\[/tex]

[tex]\sqrt{{(8} )^{2} +(5 )^{2} }\\[/tex]

[tex]\sqrt{64 +25}\\[/tex]

[tex]\sqrt{89}[/tex]

9.433

Therefore, the distance between EF is [tex]\sqrt{89}[/tex]=9.433.

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Using the concept of division we can find the amount of money each person owes.

Division is one of the fundamental operations used in mathematics which involves breaking a bigger value into smaller groups with the same number of components.

The federal debt =$24 trillion=$24000000

(one trillion=1000000 million)

The value in trillion is converted to million by multiplying by 1000000.

The number of people the amount to be equally distributed= 300 million

Amount of money equally distributed among each person

=[tex]\frac{Total debt amount}{number of people}[/tex]

=[tex]\frac{24000000}{300}[/tex]

=80000

The amount each person owes is $80000

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The inequality sign have to be flipped when dividing by a negative number.

The relation between two expressions that are not equal, employing a sign such as ≠ ‘not equal to’, > ‘greater than’, or < ‘less than’.

Given:

The given statement is the inequality sign have to be flipped when dividing by a negative number.

According to given question we have

A number that is larger when positive becomes "more negative," and thus smaller when negative, and vice versa.

Dividing by a negative number is the same as dividing by a positive number and then multiplying by −1. Dividing an inequality by a positive number retains the same inequality. But, multiplying by −1 is the same as switching the signs of the numbers on both sides of the inequality, which reverses the inequality:

a<b⟺−a>−b.

Ex:

when dividing both sides by a negative number, we reverse the inequality sign.

Take −3x<9

To solve for x, we divide both sides by −3 and get

x>−3.

Therefore, the inequality sign have to be flipped when dividing by a negative number.

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Answer:

3/5 is bigger

Step-by-step explanation:

if the numerator is the same then the one with the smaller denominator is bigger

Clara is 2700 yards far from the home.

In mathematics, yard and inches are two different  units of length. we can say that yard is the one of the measurement of length. Conversion of yard in various quantities is as below:

       1 yard = 36 inches

       1 yard = 3 feet

       1 yard = 0.914 meters

For the statement based question first of all try to find out that what is given in the statement and what we have to find out. Now, try to form the statements in the mathematical notation and then solve the equations by performing certain mathematical and algebra operations according to need.

Now, for the given question :

as, Clara  is 450 yards from the local swimming pool on the map on her phone and the pool is 2/3 inch from her current location.

Therefore, the pool distance is 450 / (2/3) = 675 yards

Now, distance of current location = 4 inches

Thus, Distance from the home = 675 × 4 = 2700 yards

Hence, Clara is 2700 yards far from the home.

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The trigonometric function's formula, which simulates the torque (tau) that the weight applied t minutes after Thomas attached it is

[tex]3 Sin (\frac{2\frac{22}{7} }{60} (t-51))[/tex]

The angular speed of the minutes hand is

[tex]w = \frac{2 (\frac{22}{7}) }{60}[/tex] rad/min

Following the application of weight, the torque as a function of time t is,

[tex]t= t_{0} sin (w (t-5) min)\\ = (3 Nm) sin ((\frac{2 (\frac{22}{7} }{60} ) rad/min (t-5) min)[/tex]

[tex]= (3 Nm) sin ( \frac{2 (\frac{22}{7} }{60} (t-5) rad ) \\= 3 sin (\frac{2 \frac{22}{7} }{60} (t-5)[/tex]

Torque, which is also known as the moment of a force, is the propensity of a force to rotate the body to which it is applied. Force (F) x Distance (r) = Torque is how torque is calculated. The distance (r) between the pivot point and the force's action point. A vector quantity is a torque. As a vector quantity, torque always has a direction that is perpendicular to the plane that contains the vectors of force and displacement.

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The solution to the equation is, v = 2.

See the steps explained below.

Given an equation, 7(v - 5) = -21, the following steps would be taken as shown below:

7(v - 5) = -21 ---> Given

7v - 35 = -21 ----> distribution property

7v - 35 + 35 = -21 + 35 -----> addition property of equality

7v = 14

Divide both sides by 7

7v/7 = 14/7 -----> division property of equality

v = 2

Thus, the solution to the equation as solved above is: v = 2.

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The results of the three cases are listed below:

In this problem we find three cases of composition between two functions, each of which has to be evaluated. The definition of the composition between the two functions f and g is presented below:

f ° g (x) = f( g(x) )                 (1)

Where x is the input variable of the composite function.

In other words, the input of the function f is the output of the function g.

Now we proceed to find the expressions of the each of the two cases:

Case 1

g ° f (x) = g( f(x) )

g ° f (x) = 4 · (2 · x + 2) - 3

g ° f (x) = 8 · x + 8 - 3

g ° f (x) = 8 · x + 5

Case 2

h ° g (- 3 · x) = h [g (- 3 · x)]

h ° g (- 3 · x) = 3 · [4 · (- 3 · x) - 3]

h ° g (- 3 · x) = 3 · (- 12 · x - 3)

h ° g (- 3 · x) = - 36 · x - 9

Case 3

f ° g (- 3) = f( g(- 3) )

f ° g (- 3) = 3 · [2 · (- 3) + 1] + 1

f ° g (- 3) = 3 · (- 5) + 1

f ° g (- 3) = - 15 + 1

f ° g (- 3) = - 14

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15 caps are needed so that she can earn $85 in an [tex]8[/tex]hour day.

The direct variation equation has the form y = kx, where k is the constant proportionality. It is a linear equation with two variables. In a coordinate plane, the direct variation graph is a straight line. A constant is the ratio of two quantities that vary directly. Relationship between two variables that can be described mathematically by an equation where one variable equals a constant multiplied by the other.

For each hour she is compensated $6.50 with $0.45.

For an 8 hour day =6.50 *8 + 0.45x

Let x be the caps and earning is $85

6.50*8+0.45*x=85

=> 52+0.45x=85

=> 0.45x=33

=> x=15 (approx.)

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Answer: -125

Step-by-step explanation:

√81/9 = 9/3 =3

√4 = 2∧7 = 128

3-128 = -125

We can see in the picture an area model that demonstrates that the quotient of 2080 and 40 is 52.

Given that,

52 is the quotient of 2080 and 40.

The expression can be represented by

2080/40=52

We divide 2080 as 1200+800+80

(1200+800+80)/40=1200/40+800/40+80/40

(1200+800+80)/40=30+20+2

(1200+800+80)/40=52

An area model is a rectangular diagram or model used in mathematics for problems involving multiplication and division, where the length and breadth of the rectangle are determined by the factors, quotient, and divisor. Using number bonds, we may divide the rectangle's enormous area into a number of smaller boxes to simplify the calculation. The product or quotient is then obtained by adding to obtain the area of the entire.

We can see in the picture an area model that demonstrates that the quotient of 2080 and 40 is 52.

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The approximate angle will be made by the stairway with the ground is 46.24°.

As we are been given that, the length of the stairway from the ground is 18 feet, under the right angle triangle, that will be the length of the hypotenuse. Next, since the elevation of the top of the stairway from, the ground is 13 feet, which is considered to be the length of the perpendicular of the assumed right angled triangle.

Now, we are asked to find the angle x,

Since, we know  that

                      sin θ = perpendicular/ hypotenuse

So, substituting the required values the desired angle we get is :

                            sin θ = 13/18

                            sin θ = 0.7222

                              θ  = sin ⁻¹ (0.7222)

                                  = 46.2364

                             x  = 46.24

the angle θ or x is 46. 24°.

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'

The set of inequalities that represents the constraints of the situation is y ≤ 2x, x + y ≥ 30 and a point (x, y) that is the feasible region is (10, 20)

The given parameters are:

Number of hours = at least 30 hours a week

This means that

x + y ≥ 30

Also, we have:

The number of hours Daniel works as a tutor (y) is at most twice the number he works as a teacher (x).

This means that

y ≤ 2x

Substitute y ≤ 2x in x + y ≥ 30

x + 2x ≥ 30

This gives

3x ≥ 30

Divide

x ≥ 10

Substitute x ≥ 10 in y ≤ 2x

y ≤ 2 x 10

Evaluate

y ≤ 20

Hence, the set of inequalities that represents the constraints of the situation is y ≤ 2x, x + y ≥ 30 and a point (x, y) that is the feasible region is (10, 20)

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Answer:

10 MPH

Step-by-step explanation:

Doug entered a canoe race. He rowed 3 1/3 miles in 1/3 hour. What is his average speed in miles per hour?​

If Doug rowed 3 1/3 miles in 1/3 hour the equation is:

3 1/3x = 1/3

multiply both sides by 3:

3(3 1/3x) = 3(1/3)

10x = 1 hour

Doug rowed 10 MPH

Answer:

10 mile per hour

Step-by-step explanation:

3 1/3 mile = 3.3333333333333333333333333333333 mile

1/3 hour = 0.3333333333333333333333333333333333 hour

divide 3.33333333333333333333333 by 0.3333333333333333333333333
= 3.333333333333333333333333333333333 * 1/.33333333333333333333
= 3.3333333333333333333333333 * 3
= 9.99999999999999999999999
= 10

Answer:

The error of their thinking is that they did not convert the equation to slope intercept form, so they assumed that the 2x was the slope. They got the standard form mixed up with slope intercept.

I hope this helps you!

The value of the car after 6 years will be $7340  .

The Depreciation can be calculated using the formula

A = P( 1 - r/100)ⁿ

where , A = amount , P = principal , r = rate of deprecation , n = time period

In the question ,

it is given that

the value of the car (P) = $28000

rate of deprecation (r) = 20% per year

time period (t) = 6 years

Substituting the values in the Depreciation formula we get ,

Amount = 28000*( 1 - 20/100 )⁶

= 28000*(80/100)⁶

= 28000*(0.80)⁶

= 28000*0.26214

= 7339.92

≅ 7340

Therefore , the value of the car after 6 years will be $7340 .

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The correct answer is event correlation.

Event correlation is a technique for making sense of a large number of events and pinpointing the few events that are really important in that mass of information. This is accomplished by looking for and analyzing relationships between events.

Event can be defined as a set of outcomes of an experiment. In other words, an event in probability is the subset of the respective sample space. So, what is sample space? The entire possible set of outcomes of a random experiment is the sample space or the individual space of that experiment

One example of event correlation can occur with intrusion detection. Perhaps there is an employee account that hasn't been accessed for years, and suddenly a large number of login attempts are noticed. That account may start executing suspicious commands.

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Answer: x=1/8

Step-by-step explanation:

[tex]\displaystyle\\x-\frac{7}{8}=-\frac{3}{4} \\\\ x-\frac{7}{8}+\frac{7}{8}=-\frac{3}{4}+\frac{7}{8}\\\\x=-\frac{3}{4} +\frac{7}{8} \\\\ x=\frac{7}{8}-\frac{3*2}{4*2}\\\\ x=\frac{7}{8} -\frac{6}{8} \\\\x=\frac{7-6}{8} \\\\x=\frac{1}{8}[/tex]

Probability of getting a head is 60%

More heads than tails means these possibilities are

2 Heads - 1 Tail

3 Heads - 0 Tails

Probability of 2 Heads and 1 Tail =   C (3,2) (.60) ^2 (.40)  

=3 * (.36) (.40)  

=3 * .144

=3 (144/1000)  

=3 (18/125)

=54/125

Probability of 3 Heads = (.60) ^3

= .6 (.36)

= .216 = 216 / 1000

= 27 / 125

Hence, total probability =   54 / 125 + 27 / 125

= 81 / 125

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Answer:

56 pints hope this helps   Brainliest please

Step-by-step explanation:

Answer:

7 gallons = 56 liquid pints!

Explanation= 1 gallon = 8 pints

The solutions fo the inequality are all the points (x, y) that meet these 3 conditions.

We want to find points of the form (x, y) that are solutions of the inequality:

x*y > 0

Clearly x and y must be different than zero.

So, for example if x = -1, y can be any negative number, for example y= -3

x*y > 0

(-1)*(-3) > 0

3 > 0

This is true.

Now if x  = 1, y must be positive. LEt's take y = 103, then:

x*y > 0

1*103 > 0

103 > 0

Then we have 3 conditions:

The solutions fo the inequality are all the points (x, y) that meet these 3 conditions.

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Answer:

A) x = 225 - 7.5p

B) x = 180 millions of gallons

Step-by-step explanation:

A) Make "x" the subject:

[tex]\sf \rightarrow 0.4x + 3p = 90[/tex]

[tex]\sf \rightarrow 0.4x = 90-3p[/tex]

[tex]\sf \rightarrow x = \dfrac{90-3p}{ 0.4}[/tex]

[tex]\sf \rightarrow x = 225-7.5p[/tex]

B) Demand when the price per gallon is $6:

substitute p = 6

[tex]\sf \rightarrow x = 225-7.5(6)[/tex]

[tex]\sf \rightarrow x = 225-45[/tex]

[tex]\sf \rightarrow x =180[/tex]

Answer: y = 3x+1

Step-by-step explanation: If (4,1) is a solution of y = 3x+1, that means if we plugin the respective values of (4,1), we should have an EQUALITY:

1 = 3(4) + 1

1 = 13 , which is wrong, then the point (4,1) is NOT a solution of y = 3x+1.

Answer:

the last two because it needs to be negative

Answer:

The last 2 options

Step-by-step explanation:

4(-15) = -60.

(–1)(15 + 15 + 15 + 15) = -60.

(–15) + (–15) + (–15) + (–15) = -60.