1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
OverLord2011 [107]
3 years ago
14

Solve 60 = 10√ y – 3

Mathematics
1 answer:
Kay [80]3 years ago
6 0

60 = 10 * sqrt (y) -3

add 3 to each side

63 = 10 sqrt(y)

divide by 10

63/10 = sqrt y

6.3 = sqrt (y)

square each side

(6.3)^2 = y

39.69 = y

Answer: y=39.69

You might be interested in
1/2ac2 where a =5 and b=2​
Evgen [1.6K]
I’ll assume the c is b. (1/2) x (5) x (2) x (2) is 10
8 0
2 years ago
Read 2 more answers
What is the square number for 2
kotegsom [21]
4 because you take 2²= 2 times 2 = 4

4 0
3 years ago
Miguel sells a house for 275,000. His commission for the sale is 7,562.5
valentinak56 [21]

Answer:

2.75\%

Step-by-step explanation:

To find what percentage a certain value is of another value, simply divide the first value by the second, respectively.

We want to find want percentage that 7,562.5 is of 275,000. Therefore, we will divide 7,562.5 by 275,000 to obtain a decimal:

\frac{7,562.5}{275,000}=0.0275

To convert from a decimal to a percentage, multiply by 100:

0.0275 \cdot 100=\boxed{2.75\%}

7 0
3 years ago
How do I solve and graph this
White raven [17]
I hope this helps you out

5 0
3 years ago
The Information Technology Department at a large university wishes to estimate the proportion of students living in the dormitor
nadya68 [22]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.005. And the critical value would be given by:

z_{\alpha/2}=-2.58, z_{1-\alpha/2}=2.58

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.05 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We can use as an estimator for p \hat p =0.5. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

3 0
3 years ago
Other questions:
  • A circle is centered on point B. Points A, C and D lie on it's circumference. If ADC measures 20 degrees, what does ABC measure
    13·1 answer
  • 1. Events A and B are dependent, P(A)=20%, P(BIA)=25%. What is P(A and B)?
    7·1 answer
  • Estimate each quotient 195 divided by 4
    11·2 answers
  • Josephine wants to put a border around the ceiling of her room. The dimensions are shown above. How many feet of border does she
    10·1 answer
  • What is the area of the circle if DF = 16 in.?
    6·1 answer
  • 3x - 6 + 7x-2x ; x = 4<br> Need help
    10·2 answers
  • I need help can someone help me
    5·2 answers
  • B−(−3)=9 pls i need help
    11·1 answer
  • The solids are similar. Find the missing dimensions.
    5·2 answers
  • 2×7×7-3×3×3×2+3×2×2-6×6<br>I need an answer
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!