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mario62 [17]
4 years ago
9

eddie is practicing wind sprints during summer break. hes able to run 72 meters in 12 seconds if d represents distance and t rep

resents time which equation represents this prportional relationship
Mathematics
1 answer:
kkurt [141]4 years ago
5 0
The ratio is 12:72............

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How would i describe the relationship?
lara31 [8.8K]

Answer:

12

Step-by-step explanation:

6 0
4 years ago
Write the equation of a line that passes through the points ( 2 , - 5 ) and ( 8 , - 2 )
kati45 [8]

Answer:

y=\frac{1}{2}x-6

Step-by-step explanation:

Hi there!

Linear equations are typically organized in slope-intercept form: y=mx+b where m is the slope and b is the y-intercept (the value of y when the line crosses the y-axis)

<u>1) Determine the slope (m)</u>

m=\frac{y_2-y_1}{x_2-x_1} where two points that fall on the line are (x_1,y_1) and (x_2,y_2)

Plug in the given points (2,-5) and (8,-2)

m=\frac{y_2-y_1}{x_2-x_1}\\=\frac{-2-(-5)}{8-2}\\=\frac{-2+5}{8-2}\\=\frac{3}{6}\\=\frac{1}{2}

Therefore, the slope of the line is \frac{1}{2}. Plug this into y=mx+b:

y=\frac{1}{2}x+b

<u>2) Determine the y-intercept (b)</u>

y=\frac{1}{2}x+b

Plug in one of the given points and solve for b

-5=\frac{1}{2}(2)+b\\-5=1+b

Subtract 1 from both sides to isolate b

-5-1=1+b-1\\-6=b

Therefore, the y-intercept of the line is -6. Plug this back into y=\frac{1}{2}x+b:

y=\frac{1}{2}x+(-6)\\y=\frac{1}{2}x-6

I hope this helps!

6 0
3 years ago
Which of the following is equivalent to this expression?<br><br> 0.4n−3(n+0.1)
Oduvanchick [21]
0.4n-3(n+0.1)
0.4n-3n-0.3
-2.6n-0.3
4 0
3 years ago
Calculate the area of this section of floor in square feet.
ch4aika [34]

Answer:

A total= 0.6703125 ft²

Step-by-step explanation:

A1= 3.9× 14.3= 55.77 in²

A2=1/2 × 14.3× ( 9.6-3.9)= 40.755 in²

A total= A1+ A2= 55.77+40.755=96.525 in²

1 ft= 12 in , 1ft²= 144 in²

Atotal= 96.525÷144= 0.6703125 ft²

8 0
3 years ago
A high school track athlete sprints 100 yards in 15 second.
Kay [80]

Answer:

0.00378787866666666666666666666667 mi/s

Step-by-step explanation:

100yards to miles is 0.05681818 miles

0.05681818 miles divided by 15sec is

0.00378787866666666666666666666667 mi/s

6 0
3 years ago
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