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Soloha48 [4]
4 years ago
14

Number 6 please ..............

Mathematics
1 answer:
satela [25.4K]4 years ago
8 0

the speed rate is simply obtained by dividing the meters by the seconds.


so Tawni did 50 meters in 40.8 seconds, that means her speed rate is 50/40.8 or about 1.23 m/s.


Pepita did 100 meters in 60.2 seconds, so she's 100/60.2 or about 1.66 m/s.


Susana did 200 meters in 112.4 seconds, so she's about 1.78 m/s.


the one who ran the fastest is the one who covered more meters in 1 second.

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If the original bill is $22.50, what will be the final bill after a 15% tip is paid? round to the nearest cent
Studentka2010 [4]
For this case what you should do is take 15% of 22.50 and add it to the original price. We have then:
 ((15) / (100)) * (22.50) = 3.375
 Then, we add to the original price:
 22.50 + 3.375 = 25.875
 round to the nearest cent
 25.88
 answer
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7 0
3 years ago
Read 2 more answers
The following situations showed a strong correlation which implies causation?
lions [1.4K]

Answer:

The situations that show strong correlation are;

1), 3), 4)

Step-by-step explanation:

To answer the question, we analyze each of the options in turn as follows

1) Since the speed of a car is given by the distance covered per unit time or speed = distance/time then, speed is inversely proportional to time that is an increase in speed will lead to a decrease in time to cover a given distance hence there is a strong correlation implying causation

2) Here, we have that the profit of the company is the difference between the total revenue and the total cost hence;

Profit = Revenue - Cost

As advertising is a cost, increasing the advertising budget, increases the cost and where the revenue remains, constant the profit will decrease

Therefore there is no correlation between increasing the advertising budget and increase in profit

3) When the weather is hot, people get thirsty and will like to cool down their body temperature, hence more people buy ice cream to cool down and quench some thirst hence there is a strong correlation between increase in temperature and an increase in ice cream sales which implies  causation

4) For very low income employments, some employees seek excuses to try to make the most of their time hence whereby it is difficult to have another employee stand in for them, some employees may select the recognized excuse of being sick so as to explain absence from work, hence when the salary is increased, they will find more reasons to come to work hence there is a strong correlation between increase in salary and decrease in sick days.

4 0
3 years ago
Evaluate the expression for t = –2.<br><br> t2 + 21t − 56 =
Keith_Richards [23]

Answer:

-94

Step-by-step explanation:

t² + 21t - 56

(-2)² + 21(-2) - 56

4 - 42 - 56

-38 - 56

-94

Best of Luck!

4 0
3 years ago
Write two polynomials whose sum is x to the second power and whose difference is 1
Alex777 [14]

Answer:

Therefore, the  first polynomial is:

Z=\frac{1}{2}x^2+\frac{1}{2}\\

the second polynomial is:

Y=\frac{1}{2}x^2-\frac{1}{2}\\

Step-by-step explanation:

We assume that: Z is first polynomial and Y is second polynomial.

Therefore, we have

Z+Y=x^2\\\\Z-Y=1\\\\\implies Z+Y+Z-Y=x^2+1\\\\2Z=x^2+1\\\\Z=\frac{1}{2}x^2+\frac{1}{2}\\

now, we get

\implies Z+Y-Z+Y=x^2-1\\\\2Y=x^2-1\\\\Y=\frac{1}{2}x^2 -\frac{1}{2}

Therefore, the  first polynomial is:

Z=\frac{1}{2}x^2+\frac{1}{2}\\

the second polynomial is:

Y=\frac{1}{2}x^2-\frac{1}{2}\\

6 0
3 years ago
3. Which expressions are equivalent to the given one?
Montano1993 [528]

Answer:

b, d

Step-by-step explanation:

20/-4 = -5

20 x (-1/4) = -5

4 0
1 year ago
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