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ratelena [41]
3 years ago
8

How is y=-2x a linear equation?

Mathematics
1 answer:
e-lub [12.9K]3 years ago
3 0
Because it lowers by the same amount each time.
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A local race for charity has taken place since 1993. Using the actual speeds of the winners from 1993 through 1998, mathematicia
pishuonlain [190]

Answer:

Here is a similar question attached with.

Option (b) that is 2005 is the right choice.

Step-by-step explanation:

Given:

An equation in slope intercept form.

y=0.18(x) + 5

Where x = number of years

Comparing from the standard slope intercept form.

y=m(x) + b

y-intercept value (b) = 5

According to the question the predicted winning speed (y) = 7.16 mph

Plugging the value of y in slope intercept form, we will calculate the x (number of years) and then we will add this with 1993 .

⇒ y=0.18(x)+5

⇒ 7.16=0.18(x)+5

⇒ 7.16-5=0.18(x)

⇒ 2.16=0.18(x)

⇒ \frac{2.16}{0.18} =x

⇒ 12=x

Finally the year would be 1993+12=2005  

So in year 2005 the winning speed is predicted to be 7.16 mph.

8 0
3 years ago
The diameter of a tire is 2.5 ft. Use this measurement to answer parts a and b. Please show all work.
Dennis_Churaev [7]

You meed to subtract and divide
8 0
3 years ago
Read 2 more answers
Members of the band are selling candy bars to raise money. The director uses this equation to calculate the amount of profit, p,
Nady [450]

Answer:

<h2> 380 candy bars</h2>

Step-by-step explanation:

Step one:

we are told that the expression for profit is

p = 1.25n - 475-----------------1

the above equation represents the situation

<u>given</u>

profit is  $950

<u>Required</u>

n=number of bars

950=1.25n-475

collect like terms

950-475=1.25n

475=1.25n

divide both sides by 1.25

n=475/1.25

n= 380candy bars

4 0
3 years ago
Coach Jill brought 28 L of sports drink to the soccer game. She divided the sports frink equally between 7 coolers. How many mL
s344n2d4d5 [400]

Answer:

400ml

Step-by-step explanation:

1 cooler=28L÷7=4L

1L=100ml

4L=400ml(Ans)

8 0
3 years ago
The price of an item has been reduced by 85% . The original price was $45. What is the price of the item now.
Kobotan [32]

Answer:the price for the item now it's 6.75


Step-by-step explanation:

Origin price is 45=100% after reduction comes to 85% =x

X stands for the unknown value of the reduction therefore

45=100%

X=85%

45*.85=100x


After calculation you realised the value of x reduction value it's 38.25


Hence, original price is 45 your less from the value reduced 38.25 therefore the value of the item is 6.75

3 0
3 years ago
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