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3 years ago

LLEASE PLEASE I NEED HELP!!! I’ll mark brainliest

Mathematics

2 answers:

enyata [817]3 years ago

7 0

Answer:

The graphs make it appear that Cool Cars' prices are much greater, but they are only a little bit greater.

Step-by-step explanation:

hope this helps and is right. p.s. i really need brainliest :)

if this is wrong, then i am incredibly sorry!

nexus9112 [7]3 years ago

5 0

Answer:

It would be the first answer

Step-by-step explanation:

At the bottom of each graph is the starting point and you can see the red graph starts at 0 where the other does not

You might be interested in

Joanna went school supply shopping. She spent $27.75 on notebooks and pencils. Notebooks cost $2.30 each and pencils cost $1.25

GaryK [48]

Answer:

The answer is A. 5 notebooks and 13 pencils

Step-by-step explanation:

1. Identify your x and y variables.

x - number of notebooks

y - number of pencils

2. Set up two equations to come up with a system of linear equations.

x + y = 18

2.3x + 1.25y = 27.75

3. In order to solve for one of the variables (either x or y), multiply the first equation with the additive inverse (when added together, the answer is zero; one number will be positive while the other number will be negative) of the coefficient of either x or y, so you can eliminate that variable. In this case, I choose the coefficient of y which is 1.25. So, the first equation will look like this:

-1.25(x + y) = 18

-1.25x - 1.25y = -22.50

4. Next, eliminate the y variable and solve for x.

-1.25x - 1.25y = -22.50

2.3 x + 1.25 y = 27.75

__________________

1.05 x = 5.25

1.05 1.05

x = 5 Joanna bought 5 notebooks.

5. Then, solve for y.

5 + y = 18

y = 18 - 5

y = 13 Joanna bought 13 pencils.

If you want to check your work, just plug in 5 and 13 into one of the two original equations. Simplify the equations, and you should get a true statement.

5 + 13 = 18

18 = 18

6 0

4 years ago

A bicycle with 18-in.-diameter wheels has its gears set so that the chain has a 6-in. radius on the front sprocket and 3-in. rad

Airida [17]

Answer:

Step-by-step explanation:

"The question is not complete, here is the complete question

A bicycle with 18-in.-diameter wheels has its gears set so that the chain has a 6-in. radius on the front sprocket and 3-in. radius on the rear sprocket. The cyclist pedals at 180 rpm.

Find the linear speed of the bicycle in in/min (correct to at least two decimal places)

How fast is the bike moving in mph (to two decimal places)?"

Step one:

given data

the diameter of wheels= 18 inches

radius of front sprocket=6 inches

radius of rear sprocket= 3 inches

The cyclist pedals at 180 rpm

The chains move at the same speed, hence

the rear sprocket must make 6/3 revolutions for every one revolution made by the front sprocket

when the rider moves the front sprocket through 180 revs/min

the rear sprocket moves through 180 (6/3) = 360 revs/min

the linear speed of the bicycle in inches per minute =

2π * 9 * 360 = about 20360.16 in/min

The speed in mph

=2π * 9 * 360 * 60 minutes in 1 hr /63360 in/ mile

=19.28 mph

4 0

3 years ago

Describe the steps you would use to factor 2x3 + 5x2 – 8x – 20 completely. Then state the factored form.

WARRIOR [948]

The polynomial $2x^3 + 5x^2-8x-20$ may have solutions which are the divisors of -20, therefore -20 has the following divisors: $\pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20$ .
If x=1, then $2\cdot1^3 + 5\cdot1^2-8\cdot1-20=-20\neq 0$ ,
if x=-1, then $2\cdot(-1)^3 + 5\cdot(-1)^2-8\cdot(-1)-20=-9\neq 0$ ,
if x=2, then $2\cdot2^3 + 5\cdot2^2-8\cdot2-20=0$ , then x=2 is a solution and you have the first factor (x-2).
If x=-2, then $2\cdot(-2)^3 + 5\cdot(-2)^2-8\cdot(-2)-20=0$ , then x=-2 is a solution, so you have the second factor (x+2).
Since x-2 and x+2 are two factors of $2x^3 + 5x^2-8x-20$ , then the polynomial $x^2-4$ is a divisor of $2x^3 + 5x^2-8x-20$ and dividing the polynomial $2x^3 + 5x^2-8x-20$ by $x^2-4$ you obtain
$2x^3 + 5x^2-8x-20=(x-2)(x+2)(2x+5)$ .

5 0

3 years ago

Read 2 more answers

how do i answer this The school play includes 60 students. 3/5 of the students are actors. The rest of the students work behind

artcher [175]

1/5 equals 12 so 12 times 5 is 60 so
a=36
b=24
Your welcome

8 0

3 years ago

The perimeter of a rectangular garden is 44 meters. The length of the rectangle is 5 less than twice the width. Find the length

defon

9514 1404 393

Answer:

width: 9 m
length: 13 m

Step-by-step explanation:

Let w represent the width. Then the length is 2w-5, and the perimeter is ...

P = 2(L+W)

44 = 2((2w-5) +w)

44 = 6w -10

54 = 6w

9 = w

2(9) -5 = 13 = length

The length of the rectangle is 13 meters; the width is 9 meters.

6 0

3 years ago