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3 years ago

Here are 5 lines on a coordinate grid: Write equations for lines a,b,c,d, and e.

Mathematics

1 answer:

densk [106]3 years ago

5 0

Answer:

A.: x=-4

b.:x=4

c.:y=4

d.:y=-2

e.:y= -3/4x + 1

Step-by-step explanation:

I like these kind of problems and I am great at them! Ask me these anytime you need!

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Dwight and Walt are building model cars. Dwight builds 7 fewer models than 4 times the number Walt builds.Dwight builds at most

Yuliya22 [10]

Answer: w lesser than or equal to 4

Step-by-step explanation:

Dwight and Walt are building model cars.

Let d = the number of models built by Dwight.

Let w = the number of models built by Walt.

Dwight builds 7 fewer models than 4 times the number Walt builds. This can be expressed as

d = 4w - 7 - - - - - - - - - 1

Dwight builds at most 9 models. This is expressed as

d lesser than or equal to 9

From equation 1

d = 4w - 7

4w = d + 7

w = (d+7)/4

Assuming Dwight built 9 models

w = (9+7)/4 = 4

Therefore,

Walt builds at most 4 models. It is expressed as

w lesser than or equal to 4

It is shown in the attached photo

7 0

3 years ago

Read 2 more answers

QUICK!!! PLEASE HELP!!! 50 points.. and BRAINLIEST FOR THE QUICK AND CORRECT ANSWER.

faust18 [17]

Answer: $e=-50|t-40|+2000$

The cable car’s elevation will be 750 feet after 15 minutes or 65 minutes.

Step-by-step explanation:

Given: A cable car begins its trip by moving up a hill. As it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet.

Then, total time taken to reach the peak = (Distance) ÷ (speed)

= (2,000 feet) ÷ ( 50 feet/minute)

= 40 minutes

Then, as the car moves down to the hill’s base, its elevation drops at the same rate.

The equation that models the cable car’s elevation, e, after t minutes is

e= (constant rate)|t- time to reach peak |+ Peak's height

$e=-50|t-40|+2000$

When the cable car’s elevation will be 750 feet after minutes, then we have

$750=-50|t-40|+2000\\\\\Rightarrow\ -50|t-40|=750-2000\\\\\Rightarrow\ -50|t-40|=1250\\\\\Rightarrow|t-40|=-\dfrac{1250}{50}\\\\\Rightarrow|t-40|=-25\\\\\Rightarrow t-40=-25\text{ or }t-40=25\\\\\Rightarrow t=-25+40\text{ or }t=25+40\\\\\Rightarrow t=15\text{ or }t=65$

Time cannot be negative, so the cable car’s elevation will be 750 feet after 15 minutes or 65 minutes.

5 0

3 years ago

Maya painted 3/4 of her art project in the morning and 1/8 of her project in the evening which equation can Maya use c to find h

Tatiana [17]

Answer:

Maya painted 3/4 of her art project in the morning and 1/8 of her project in the evening which equation can Maya use c to find how much of the project she painted dtrdtrdtrdtrdrt9945 is waiting for your help.

Step-by-step explanation:

5 0

3 years ago

3 What is the difference of 21 ? 4

PilotLPTM [1.2K]

Answer:

The difference is 4–3. If you want the difference between 3 and -4, then the difference is 7.

Step-by-step explanation:

6 0

3 years ago

Multi step equation and check 12x+3-1=35

ch4aika [34]

Answer:

11/4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

12x+3−1=35

12x+3+−1=35

(12x)+(3+−1)=35(Combine Like Terms)

12x+2=35

Step 2: Subtract 2 from both sides.

12x+2−2=35−2

12x=33

Step 3: Divide both sides by 12.

12x / 12 = 33 / 12x =

11 / 4

5 0

3 years ago