Answer:
Step-by-step explanation:
what 3x9
We know from table that x intercept (when y or t(x) is 0) is -3
next we can move over the -y from the given equation
y = 4+ 4x
solving for when y is 0
0 = 4 + 4x
-4 = 4x
x=-1
Thus the first equation has larger intercept of -1
-10d^2 + 11d - 2
To find this, distribute the - to 7d^2 - d - 6.
This will give you a new equation of:
-3d^2 + 10d - 8 -7d^2 + d + 6
Combine like terms to get the answer above.
Hope this helps!
Answer:
b = -1
Step-by-step explanation:
-7+b= -8
Add 7 to each side
-7+7+b= -8+7
b = -1
Answer:
E. 16 min 12 sec
Step-by-step explanation:
Let x represent total time taken to complete the exercise.
We have been given that Dara ran on a treadmill that had a readout indicating the time remaining in her exercise session.
When the readout indicated 24 min 18 sec, she had completed 10% of her exercise session. This means that 90% time of exercise is equal to 24 minutes and 18 seconds.
18 seconds will be equal to 0.3 minutes.
Let us find total time of exercise as:
![\frac{90}{100}x=24.3](https://tex.z-dn.net/?f=%5Cfrac%7B90%7D%7B100%7Dx%3D24.3)
![0.90x=24.3](https://tex.z-dn.net/?f=0.90x%3D24.3)
![\frac{0.90x}{0.90}=\frac{24.3}{0.90}](https://tex.z-dn.net/?f=%5Cfrac%7B0.90x%7D%7B0.90%7D%3D%5Cfrac%7B24.3%7D%7B0.90%7D)
![x=27](https://tex.z-dn.net/?f=x%3D27)
To find readout when Dara had completed 40% of her exercise session, we need to find 60% of total time.
![\frac{60}{100}(27)=0.60(27)=16.2](https://tex.z-dn.net/?f=%5Cfrac%7B60%7D%7B100%7D%2827%29%3D0.60%2827%29%3D16.2)
Since our time in in minutes, so we will convert 0.2 minutes to seconds by multiplying by 60.
![0.20(60)=12](https://tex.z-dn.net/?f=0.20%2860%29%3D12)
Therefore, the readout will indicate 16 minutes 12 seconds, when Dara had completed 40% of her exercise session.