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Nataly [62]
3 years ago
9

What time did Katie start practicing if ate snack for 15min, watched tv for 30 min and practiced for 45 minutes

Mathematics
1 answer:
VMariaS [17]3 years ago
8 0
If she ended at 6 pm.

practiced for 45 minutes. 6 pm work back 45 minutes, she started practicing at 5:15pm.

watched tv for 30 minutes. 5:15 pm work back 30 minutes, she started watching tv at 4:45 pm

ate snack for 15 minutes. 4:45 pm work back 15 minutes, she started eating her snacks at 4:30 pm.
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An environmental study of a certain community suggests that t years from now, the average level of carbon monoxide in the air wi
icang [17]

Answer:

3.4625

Step-by-step explanation:

Given the equation:

Q(t)=0.05t^2 + 0.1t + 3.4 parts per million

Where t = time in years

By approximately how much will the carbon monoxide lvel change during the coming 6 months?

t = 6 months = 6/12 = 0.5 year

Q(0.5) = 0.05(0.5)^2 + 0.1(0.5) + 3.4 parts per million

Q(0.5) = 0.05(0.25) + 0.05 + 3.4

Q(0.5) = 0.0125 + 0.05 + 3.4

Q = 3.4625

Carbon monoxide level will change by approximately 3.4625 parts per million in 6 months

7 0
4 years ago
I need to know if there functions or not (algebra)
faust18 [17]

Answer:

Number 14 is a function and Number 16 is NOT a function.

Step-by-step explanation:

To check if a set of numbers form a function, you can look at the x values or the imput values.

For number 14 the x values are : 4,-3,-4,5,6. When looking at these values, there can only be one of each number.

For example in number 16, there's two 0's and we cannot allow that! So therefore, number 16 is not a function.

Also note, the y values are called the outputs.

A function is only allowed to have ONE imput with each output.

Hope this helps! :)

4 0
3 years ago
6x + 2y = 12 solve for y
RUDIKE [14]
Subtract 6x from both sides to get:

2y=-6x+12

Then divide both sides by 2 to get:

y=-3x+6
4 0
3 years ago
PLEASE HELP ME (it’s numbers 2-5) thanks! ☺️
Alisiya [41]
I’m stuck on the sameee
3 0
3 years ago
Select all ratios equivalent to 18:10<br><br>36:20<br>9:5<br>27:15​
vfiekz [6]
All of them are correct
3 0
4 years ago
Read 2 more answers
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