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kolezko [41]
3 years ago
10

I need help with my math. I don't understand any of it. :(

Mathematics
2 answers:
andre [41]3 years ago
5 0
This is very easy just alot of terrible numbers lol.

If she goes "down" for 90 SEC  that means she is moving Negative.
So she moves for 90 seconds at a Rate of 3.5 Feet per second
Which means every second she goes down she will subtract 3.5 Ft
Since she is moving for 90 SEC then this will be the equation
 Feet will be negative because she is going down.
-3.5 X 90=?  You might need a calculator.

Now that she has gone down she decided to go up.  For 30 seconds at a different rate. 2.2 Seconds. So now since she is going up it is Increasing. 
Feet will be Positive because she is going up now.
This is the equation 
2.2 X 30=? 
First you want to add both the equations you solved so far.
Now she wants to go to Exactly 0 . So she decides to go up really fast!
So when you get the amount.  She wants to Increase by 4.8 FT Per SEC

So you take the amount you added which should be negative 
And put it into an equation.
 
4.8 Divided by ( the equation you added) = ? SEC

SEC= SECONDS FT= FEET 

Kisachek [45]3 years ago
4 0

Answer:

hmmm

Step-by-step explanation:

wow thatas a bunch of nonescence

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Select all the points that are on the graph of the line LaTeX: 2x + 4y = 202 x + 4 y = 20.
liraira [26]

Answer:

i need to see the graph

Step-by-step explanation:

3 0
3 years ago
A motor boat travels 60 miles down a river in three hours but takes five hours to return upstream. Find the rate of the boat in
Kryger [21]

Answer:

  • boat: 16 mph
  • current: 4 mph

Step-by-step explanation:

  speed = distance / time

The rate downriver is (60 mi)/(3 h) = 20 mi/h.

The rate upriver is (60 mi)/(5 h) = 12 mi/h.

The rate of the boat in still water is the average of these:

  (20 +12)/2 mi/h = 16 mi/h

The rate of the current is the difference between the boat speed and actual speed:

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3 0
3 years ago
Seled the two inequalities shown in the system<br> (125 Points)
jeka94

Answer:

I am not smart enough for that one

Step-by-step explanation:

because I am just built the same as you all

6 0
2 years ago
Z-score of 0.02 what can you assume about the value in relation to the mean
charle [14.2K]
The z-score tells you
  the value is 0.02 standard deviations above the mean.
5 0
3 years ago
I need help with this one asap please and thank you
inna [77]

Answer:

C

Step-by-step explanation:

A

(m² - 3m + 2) / (m² - m)

we see due to a little bit of experience with expressions and multiplications of expressions that

(m² - 3m + 2) = (m - 2)(m - 1)

(m² - m) = m(m - 1)

so,

(m - 2)(m - 1) / (m(m - 1)) = (m - 2) / m

so, that's not it.

B

(m² - 2m + 1) / (m - 1)

we see again

(m² - 2m + 1) = (m - 1)(m - 1)

so,

(m - 1)(m - 1) / (m - 1) = m - 1

so, that's not it.

C

(m² - m - 2) / (m² - 1)

we see again

(m² - m - 2) = (m - 2)(m + 1)

and

(m² - 1) = (m + 1)(m - 1)

so,

(m - 2)(m + 1) / ((m + 1)(m - 1)) = (m - 2) / (m - 1)

yes, that is the solution.

D

(2m² - 4m) / (2(m - 2))

2m(m - 2) / (2(m - 2)) = 2m/2 = m

no, that is not a solution.

8 0
2 years ago
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