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Galina-37 [17]
2 years ago
14

Can someone please help me? ​

Mathematics
1 answer:
Irina18 [472]2 years ago
4 0

Answer:

9x

Step-by-step explanation:

If there were 9 songs per hour and x is hours, there we go!

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PLEASE HELP ITS FOR A FRIEND!!!! the last time Rachael played football she made a touchdown 25% of the time she ran the ball bas
Tema [17]

Answer: 5 times

Step-by-step explanation:

7 0
3 years ago
A company has a cost equation of c=0.925x^2-4x+20 and a profit equation of p=-1.125x^2+6x+40. Solve for the breakeven point.
lana66690 [7]
0.925x^2 - 4x + 20 = -1.125x^2 + 6x + 40 (at break even point)

2.05x^2 - 10x - 20 = 0

x =  [ - (-10) +/- sqrt(100 - 4*2.05*-20) / (2*2.05) 

x =  6.40, -1.52   Ignore the negative 

Answer is  6.40


3 0
2 years ago
4(w+1)=−6 <br><br> w = ?<br> HURRY FAST!
vodomira [7]

Answer:

4w+4=-6

4w=-6-4

4w=-10

4w/4=-10/4

w=-2.5

7 0
3 years ago
In an effort to estimate the mean of amount spent per customer for dinner at a major Lawrence restaurant, data were collected fo
larisa86 [58]

Answer:

The 99% confidence interval for the population mean is 22.96 to 26.64

Step-by-step explanation:

Consider the provided information,

A sample of 49 customers. Assume a population standard deviation of $5. If the sample mean is $24.80,

The confidence interval if 99%.

Thus, 1-α=0.99

α=0.01

Now we need to determine z_{\frac{\alpha}{2}}=z_{0.005}

Now by using z score table we find that  z_{\frac{\alpha}{2}}=2.58

The boundaries of the confidence interval are:

\mu-z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80-2.58\times \frac{5}{\sqrt{49}}=22.96\\\mu+z_{\frac{\alpha}{2}}\times \frac{\sigma}{\sqrt{n} }\\24.80+2.58\times \frac{5}{\sqrt{49}}=26.64

Hence, the 99% confidence interval for the population mean is 22.96 to 26.64

3 0
3 years ago
Look at the expression 1/2 (c + 8). Tell whether each statement about the expression is True or False. 50 points if right and if
Alika [10]

Answer:

a)true becuase ×1/2 and ÷2 are doing the same thing

b) true bc they simplified the equation

c)true bc a term is a number or letter and 1/2 is the coefficient

d) true bc thats what the equation is telling you to do

Step-by-step explanation:

I hope that helped

4 0
2 years ago
Read 2 more answers
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