Write an equation in slope-intercept form for the line that has a slope of -4 and passes through (1, 2).

A. y = -2x + 4
B. y = -4x + 2
C. y = -4x + 6
D. y = -4x + 9

Answer:

Matt has 7/12 of the jar of marbles left.

Step-by-step explanation:

In order to find this, simply subtract the 3/4 from the full jar (1) and then add 1/3. They will need common denominators to complete this operation.

1 - 3/4 + 1/3 = Amount

12/12 - 9/12 + 4/12 = Amount

7/12 = Amount

Answer:

it cost $39.95 in a month when you use the internet for 14 hours

Step-by-step explanation:

internet company charges $4.95 per month plus $2.50 for each hour

Let x be the amount of hours internet used

for 1 hour, charge is 2.50

for x hours , charge is 2.50x

To get linear equation we use y=mx+b

m is the slope and b is the fixed cost

fixed cost b= 4.95 and slope m = 2.50

So equation becomes y = 2.50x + 4.95

we need to find the cost y for 14 hours

So we plug in 14 for x  and find out y

y = 2.50(14) + 4.95= 39.95

Final answer:

The linear equation to model the monthly cost of internet use is y = 4.95 + 2.50x. For using the internet for 14 hours, the total cost would be $39.95.

Explanation:

The student is asking for a linear equation in slope-intercept form to model the monthly cost of internet usage based on the number of hours used. The internet company charges a monthly subscription fee plus an additional fee per hour of use. The equation to represent this situation is y = 4.95 + 2.50x, where y represents the total monthly cost in dollars and x represents the number of hours the internet is used. To calculate the cost for 14 hours of use in a month, we substitute x with 14: y = 4.95 + 2.50(14), which equals $39.95 for the month.

Answer:

16 edges.

Step-by-step explanation:

We will use Euler's polyhedron formula to solve for the edges of our convex polyhedron.

Euler's polyhedron formula is: [tex]V+F-E=2[/tex], where,

V= Vertices of polyhedron,

F= Faces of polyhedron,

E= Edges of polyhedron.

Let us substitute V=6 and F=12 in Euler's formula to find number of edges of our polyhedron.

[tex]6+12-E=2[/tex]

[tex]18-E=2[/tex]

Let us subtract 18 from both sides of our equation.

[tex]18-E-18=2-18[/tex]

[tex]-E=2-18[/tex]

[tex]-E=-16[/tex]

[tex]E=16[/tex]

Therefore, our convex polyhedron will have 16 edges.

s in the expression s • (16) = 2.5  represents the speed in miles per hour.

Speed is defined as when an object is in motion, the distance covered by that object per unit of time is called speed.

here,
A theme park has a tram that goes around the 2.5-mile perimeter of the park in 10 minutes.
So,
Speed = 2.5 miles / 10 minutes

Since, 1 hour = 60 minutes,
And 1 minute = 1/60 hours,

Now, converting the unit of speed of tram from miles per minute to miles per hour where,
Speed = 2.5 miles / 10 (1/60 hours)
Speed = s (say)

s = 2.5/ (1/6)
s (1/6) = 2.5

hence, s in the above expression represents the speed.

Learn more about speed here:

https://brainly.com/question/7359669

#SPJ5

Final answer:

The symbol 's' in the equation represents the speed of the tram in miles per minute

Explanation:

The student's question involves solving for the speed s of a tram that goes around the perimeter of a theme park. The equation provided is s (16) = 2.5, where s represents the speed of the tram in miles per minute. To find the value of s, we need to divide both sides of the equation by 16, which yields:

s = 2.5 / 16

Now, performing the division gives us:

s = 0.15625

Therefore, the speed of the tram is 0.15625 miles per minute.

Answer:

225

Step-by-step explanation:

The sum total of all the angles is 7,740 degrees,

The formula for the interior angle is 180(n - 2) where n is the number of sides in the polygon

Set this equal to 7740

180 (n-2) = 7740

Divide each side by 180

 180/180 (n-2) = 7740/180

  n-2 =43

Add 2 to each side

n-2+2 = 43+2

n = 45

Each vertex hold 5 people so take n and multiply by 5

45*5 = 225

The Ferris wheel holds 225 people

Answer:

The Answer is c) 6

Step-by-step explanation:

Solve for x:

5 (x - 3) + 7 = 22

5 (x - 3) = 5 x - 15:

5 x - 15 + 7 = 22

Grouping like terms, 5 x - 15 + 7 = 5 x + (7 - 15):

5 x + (7 - 15) = 22

7 - 15 = -8:

5 x + -8 = 22

Add 8 to both sides:

5 x + (8 - 8) = 8 + 22

8 - 8 = 0:

5 x = 22 + 8

22 + 8 = 30:

5 x = 30

Divide both sides of 5 x = 30 by 5:

(5 x)/5 = 30/5

5/5 = 1:

x = 30/5

The gcd of 30 and 5 is 5, so 30/5 = (5×6)/(5×1) = 5/5×6 = 6:

Answer:  x = 6

Answer:

x=6

Step-by-step explanation:

7 + 5(x - 3) = 22

The first step is to distribute the 5

7+ 5x-5*3 =22

7+ 5x-15 =22

Combine like terms

5x-8 =22

Add 8 to each side

5x-8+8 =22+8

5x = 30

5x/5 = 30/5

x=6

Answer:

A

Step-by-step explanation:

The expression 1.25 d means 100% of the price +25% of the price. This means it increased by 25%. Multiplying it by 0.8 means it's value is only 80% of the value now which means it must of had a 20% decrease after increasing. It's now at it's original price.

Answer:

it would be 8 hours

Answer:

I got 7.2 hours

Step-by-step explanation:

make a proportion such as 5/12=3/x and cross multiply then solve the rest

Answer:

1344 miles

Step-by-step explanation:

using the relationship between distance/ speed / time

distance = speed × time, then

distance = 56 × 24 = 1344 miles travelled

To determine the distance traveled, we use the formula 'Distance = Speed x Time'. Based on Carly's average speed of 56 miles per hour for 24 hours, she traveled a total of 1,344 miles.

In this problem, we're being asked to calculate how far Carly drove across the country in 24 hours if her average speed was 56 miles per hour. To find the distance she traveled, we can make use of the formula Distance = Speed x Time. So, for this particular situation:

Distance = 56 mph x 24 hours = 1,344 miles

Therefore, Carly drove 1,344 miles in 24 hours with an average speed of 56 miles per hour.

https://brainly.com/question/34212393

#SPJ2

The question deals with budgeting $60 to buy as many pants and shirts as possible, with at least two pairs of pants to be bought. After purchasing two pairs of pants, the remaining budget can be divided by the price of the remaining item to get the possible quantity.

The subject of this question is

Mathematics

, specifically budgeting and maximizing purchases under a fixed budget. You have $60 to spend and each pair of pants costs $8.99, while shirts cost $3.99. If you want to buy at least two pairs of pants, your initial expense will be $8.99 x 2 = $17.98. After buying two pairs of pants, you will have $60 - $17.98 = $42.02 left to spend on either more pants or shirts. Divide this remaining amount by the price of the item you want to buy more of (either pants or shirts) to see how many more items you can purchase. Remember to round the result down to the nearest whole number, since you can't buy a fraction of an item.

https://brainly.com/question/31952035

#SPJ3

Answer:

As per the given statement: when the lights go out at the store at night there's a 15% off sign hanging out by the make up counter.

To find the number as a decimal and a fraction in simplest form.

Given the Number = 15%.

If we convert any number from percent to decimal divide by 100 and remove the % sign.

[tex]\frac{15}{100} = 0.15[/tex]

Then the given number in decimal is, 0.15

Now, to convert this percent into fraction;

[tex]\frac{15}{100}[/tex]

Divide both numerator and denominator by 5 to get;

[tex]\frac{\frac{15}{5} }{\frac{100}{5} } = \frac{3}{20}[/tex]

Therefore, the given number in fraction is; [tex]\frac{3}{20}[/tex]

Answer:

500 pounds

Step-by-step explanation:

By proportion :-

15% of the tigers weight   = 75 pounds

1%    ....................................   = 75/15 pounds

100% ..................................   = 75*100 / 15 pounds

= 7500 / 15

= 500 pounds

Answer:

9 quarters and 12 nickles

Step-by-step explanation:

9 quarters = $2.25

12 nickles = .60

$2.25 + .60 = 2.85

12 is 3 more than 9

Answer:

The value of [tex]s_{26}=84.5[/tex]

Step-by-step explanation:

We have given  [tex]a_{14}=4.1[/tex]

d=1.7

We have to find [tex]s_{26}[/tex]

So, [tex]a_{14}=a+13d[/tex] from the formula

[tex]a_n=a+(n-1)d[/tex]

When n=14

[tex]a_{14}=a+(14-1)(1.7)=a+13(1.7)[/tex]

[tex]4.1=a+22.1[/tex]

[tex]-18=a[/tex]

[tex]a=-18[/tex]

Using the formula:

[tex]s_n=\frac{n}{2}[2a+(n-1)d[/tex]

When n=26

[tex]s_{26}=\frac{26}{2}[2(-18)+(26-1)(1.7)][/tex]

On simplification we get:

[tex]s_{26}=84.5[/tex]

Answer:

D

Step-by-step explanation:

so basically to add up radicals you need to make the number inside the square root the same. what you have to do to do that is find squares inside the number as a factor.

13√80=13*2√20=13*2*2√5=52√5

3√125=3*5√5=15√5

√500=10√5

so all of them have 5 in the square root so you can add them up to equal 77√5

To find the perimeter of a triangle with given radical expressions for side lengths, simplify each expression and add them up. The correct answer is D) 77√5.

The perimeter of a triangle is the sum of the lengths of all three sides. So, to find the perimeter of the triangle given the side lengths as radical expressions, we need to simplify and add them up.

The given side lengths are: 13√80 , 3√125, and √500.

Simplify each radical expression:

13√80 = 13 * √(16 * 5) = 13 * (4 * √5) = 52√5

3√125 = 3 * √(25 * 5) = 3 * (5 * √5) = 15√5

√500 = √(100 * 5) = 10√5

Now, add up the simplified radical expressions: 52√5 + 15√5 + 10√5 = (52 + 15 + 10)√5 = 77√5.

Therefore, the correct answer is D) 77√5, which represents the perimeter of the triangle.

https://brainly.com/question/34402942

#SPJ3

Is it asking about the slope of this vertical line? if so, then the answer is "undefined". The rise is any number you want, let's say 1, and the run is 0

slope = rise/run = 1/0 = undefined

you cannot divide by zero

Answer:

The number of months  does the lease last are 36 months.

Step-by-step explanation:

Let us assume that the number of months be x.

As given

Taylor Scuff leased a new sports car and is certain she can keep under the 12,000 miles allowed a year.

The $2,200 due at signing includes the title and license fee.

Her monthly lease payments are $700 a month.

If the total lease cost is $27,400.

Than the equations becomes

2200 + 700x = 27400

700x = 27400 - 2200

700x = 25200

[tex]x = \frac{25200}{700}[/tex]

x = 36

Therefore the number of months  does the lease last are 36 months.

If a, b and c are the lengths of the sides of a triangle then

if a ≤ b ≤ c, then a + b > c.

1. a ≤ 3 ≤ 8 then a + 3 > 8 → a > 8 - 3 → a > 5 FALSE, because a ≤ 3.

2. 3 ≤ a ≤ 8 then 3 + a > 8 → a > 5 therefore  5 < a ≤ 8

3. 3 ≤ 8 ≤ a then 3 + 8 > a → 11 > a → a < 11 therefore 8 ≤ a < 11.

The range of possible links for the third side s is 5 < s < 11

A triangle is a polygon with three sides , three vertices and three angles.

It is known that if a, b and c are the lengths of the sides of a triangle and

then

a + b > c  

b+c > a  

c+a > b

Then the length of the third side lies between

8-3 < s < 8+3

5 < s < 11

Therefore the range of possible links for the third side s is 5 < s < 11

To know more about Triangle

https://brainly.com/question/2773823

#SPJ2

Answer:

Stefan spend originally $110 and the money stefan make by selling the bicycle and helmet to jin is $22 .

Step-by-step explanation:

As given

Stefan sells jin a bicycle for $114 and a helmet for $18.

Total cost of the bicycle and helmet = $114 + $18

                                                            = $132

The total cost for jin is 120% of what stefan spent originally to buy the bike and helmet.

120% is written in the decimal form.

[tex]= \frac{120}{100}[/tex]

= 1.20

Let us assume that the Stefan spend originally for bike and helmets be x.

Than the equation becomes

1.20 × x = 132

1.20x = 132

[tex]x = \frac{132}{1.20}[/tex]

x = $110

Therefore stefan spend originally be  $110 .

Now find out how much money did he make by selling the bicycle and helmet to jin .

Money make by Stefan = Total selling cost of helmet and bicycle  - Total amount of  stefan spends for purchasing.

Money make by Stefan = 132  - 110

Money make by Stefan = $22

Therefore the money stefan make by selling the bicycle and helmet to jin is $22 .

Stefan's original expenditure for the bicycle and helmet was $110. He made a profit of $22 by selling these items to Jin.

Stefan sold the bicycle and helmet to Jin for a total of $132 ($114 + $18). We know that this amount represents 120% of what Stefan originally spent. To determine Stefan's original expenditure, we'll therefore divide the total amount he earned by 120 and then multiply by 100 (as the cost is 100% for him). So, Stefan's original expenditure would be (132/120)*100 = $110.

Now, to determine Stefan's profit, we subtract his original expenditure from the amount for which he sold the items to Jin. That is, $132 - $110 = $22. So, Stefan made a $22 profit from selling the bicycle and helmet.

https://brainly.com/question/29785281

#SPJ3

Answer:

Problem One: D

Problem Two: B

Step-by-step explanation:

Problem One

A and B are both wrong for the same reason. The graph for both of them will increase. Any time you raise a base greater than 1 to a power, the graph goes up. See below. The red graph is y = 12*1.1^2

The question is giving you a big hint by showing you which point to look at. When x = 1, y = 8. What will do that?

Is it 12 * 1/2 or is it 12 * 2/3

I think you will find it is 12*2/3 So the answer is D

Part B

This one is just the opposite, only now you have to figure out which graph you are getting. A is the only one that is obviously wrong. When x = 1, A will give

40* 1.5 which is 60 which is not enough.

C is too large. 40 * 3.25 = 130 so that does not describe the graph when x = 1.

So B and D are your only choices. D is still a little too big. See if you can get D to be 100 when D = 1

That leaves you with b

y = 40 * 2.25 = 90 which is just what you want.

Answer:

4. x=2 y=3

5. x=-3, y=-6

6. x=0, y=6.5

Step-by-step explanation:

A system of equations is 2 or more equations for which the same x,y solution exists. We can solve the system in three ways: elimination, substitution, or graphing. To use substitution, we substitute a equivalent expression in for a variable and solve for the remaining variable. We then substitute again to find the other variable.

y=5x-7  & -3x-2y=-12

We will input for y, the expression 5x-7 into -3x-2y=-12. We will then isolate x to solve for it using inverse operations.

-3x-2(5x-7)=-12

-3x-10x+14=-12

-13x+14=-12

-13x+14-14=-12-14

-13x=-26

x=2

We substitute back in now to solve for y. y=5(x)-7=5(2)-7=10=7=3

-4x+y=6  & -5x-y=21

We will input for y, the expression 6+4x into -5x-y=21. We will then isolate x to solve for it using inverse operations.

-5x-(4x+6)=21

-5x-4x-6=21

-9x-6=21

-9x-6+6=21+6

-9x=27

x=-3

We substitute back in now to solve for y. y=4(x)+6=4(-3)+6=-12+6=-6

-7x-2y=-13  & x-2y=-13

We will input for x, the expression 2y-13 into -7x-2y=-13. We will then isolate y to solve for it using inverse operations.

-7(2y-13)-2y=-13

-7(2y)+-7(-13)-2y=-13

-14y+91-2y=-13

-16y+91=-13

-16y+91-91=-13-91

-16y=-104

y=6.5

We substitute back in now to solve for x. x=2y-13=2(6.5)-13=13-13=0.

Answer:

a. $102  b. $38  c. 19/70.

Step-by-step explanation:

a. You spent  2/3 * 60 + 7/10 * 35 + 5/6 * 45

= $102.

b. Cost before the sale discount = 60 + 35 + 45 = $140 , so the amount you saved = 140 - 102 = $38.

c.  Fraction on original price saved = 38/140 = 19/70.

Money spent is $102. Money saved is $38. The fraction of the total original price saved is 19/70.

a. How much money did you spend?

Sneakers: 2/3 of $60 = $40

Sweater: 7/10 of $35 = $24.50

Jacket: 5/6 of $45 = $37.50

Total spent = $40 + $24.50 + $37.50 = $102

b. How much money did you save?

Original total price = $60 + $35 + $45 = $140

Amount saved = $140 - $102 = $38

c. What fraction of the total original price did you save?

Fraction saved = Amount saved / Total original price = $38 / $140 = 19/70

Answer:

∠A ≅ ∠D, ∠B ≅ ∠E, ∠c ≅ ∠F, AB = DE, BC = EF, AC = DF

Step-by-step explanation:

Given that triangles ABC and DEF are congruent. Now we need to choose correct congruency statements from the given choices.

We know that corresponding angles of congruent triangles are equal so we can write:

∠A ≅ ∠D

∠B ≅ ∠E

∠c ≅ ∠F

We know that corresponding sides of congruent triangles are equal so we can write:

AB = DE

BC = EF

AC = DF

comparing these with given choices we see that, First choice is correct.

Answer:

The center is at (5, -3) and the radius is 5

Step-by-step explanation:

The equation for a circle is given by

(x-h)^2 + (y-k)^2 = r^2

Where (h,k) is the center of the circle and r is the radius of the circle.

(x - 5)2 + (y + 3)2 = 25

Rewriting the equation

(x - 5)2 + (y -  -3)2 = 5^2

The center is at (5, -3) and the radius is 5

Answer:

The equation of the line would be y = 1/3x + 2

Step-by-step explanation:

To find this, we must first solve the original equation for y.

3x + y = 6

y = -3x + 6

This means the original slope is -3. Since the original slope is -3, we know that the perpendicular slope is 1/3. This is because perpendicular slopes are opposite and reciprocal.

Now we use the slope and the intercept in slope-intercept form to get the equation.

y = mx + b

y = 1/3x + 2

The equation of a line perpendicular to the line 3x + y = 6 and passing through the y-intercept of 2 is y = 1/3x + 2.

To find the equation of a line that is perpendicular to a given line and passes through a certain y-intercept, we first find the slope of the given line, and then use the negative reciprocal of that slope as the slope of the new line.

The given line is in standard form 3x + y = 6. To convert it to slope-intercept form, we isolate y: y = -3x + 6. Therefore, the slope of the given line is -3. The slope of any line perpendicular to this line is the negative reciprocal of this slope, or 1/3.

The new line must pass through the point where y = 2. So, we plug this value into the slope-intercept form of the equation: y = mx + b, where m is the slope and b is the y-intercept. As a result, the new equation is: y = 1/3x + 2.

https://brainly.com/question/18271653

#SPJ2

Answer:  1.247 kilometers

Step-by-step explanation:  multiply 8600 by 0.145 so 8600 times 0.145=1247

Brainly keeps saying that my answer contains inappropriate words.

It doesn't!!!

I'll try again.

Answer:

[tex]\cos\left(\theta\right)=\frac{\sqrt{15}}{4}[/tex]

Step-by-step explanation:

Given that [tex]\sin\left(-\theta\right)=-\frac{1}{4}[/tex] and [tex]\tan\left(\theta\right)=\frac{\sqrt{15}}{15}[/tex]

Using those values we need to find value of [tex]\cos\left(\theta\right)[/tex]

So let's begin with equation of  [tex]\tan\left(\theta\right)=\frac{\sqrt{15}}{15}[/tex] and simplify it to get value of  [tex]\cos\left(\theta\right)[/tex]

[tex]\tan\left(\theta\right)=\frac{\sqrt{15}}{15}[/tex]

[tex]\frac{\sin\left(\theta\right)}{\cos\left(\theta\right)}=\frac{\sqrt{15}}{15}[/tex]

[tex]\sin\left(\theta\right)=\frac{\sqrt{15}}{15}\cos\left(\theta\right)[/tex]

[tex]\sin\left(\theta\right)\cdot\frac{15}{\sqrt{15}}=\cos\left(\theta\right)[/tex]

[tex]\cos\left(\theta\right)=\sin\left(\theta\right)\cdot\frac{15}{\sqrt{15}}[/tex]

[tex]\cos\left(\theta\right)=-\sin\left(-\theta\right)\cdot\frac{15}{\sqrt{15}}[/tex]  {since [tex]\sin\left(-\theta\right)=-\sin\left(\theta\right)[/tex] }

[tex]\cos\left(\theta\right)=-\sin\left(-\theta\right)\cdot\sqrt{15}[/tex]

[tex]\cos\left(\theta\right)=-\left(-\frac{1}{4}\right)\cdot\sqrt{15}[/tex]

[tex]\cos\left(\theta\right)=\frac{\sqrt{15}}{4}[/tex]

Answer:

[tex]\cos \theta = \frac{\sqrt{15}}{4}[/tex]

Step-by-step explanation:

The sine function is an odd function, that is:

[tex]\sin (-\theta) = - \sin \theta[/tex]

Then,

[tex]\sin \theta = \frac{1}{4}[/tex]

The cosine function is computed by the following relation:

[tex]\cos \theta = \frac{\sin \theta}{\tan \theta}[/tex]

[tex]\cos \theta = \frac{\frac{1}{4} }{\frac{\sqrt{15}}{15} }[/tex]

[tex]\cos \theta = \frac{\frac{1}{4} }{\frac{1}{\sqrt{15}} }[/tex]

[tex]\cos \theta = \frac{\sqrt{15}}{4}[/tex]

Answer:

Median is sqrt61

Step-by-step explanation: