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
vivado [14]
3 years ago
14

Simplify The expression 8(5x-9)

Mathematics
1 answer:
bearhunter [10]3 years ago
5 0

40x-72 because 8×5x is 40x and 8×9 is 72

You might be interested in
A professor at a local university noted that the exam grades of her students were normally distributed with a mean of 73 and a s
Umnica [9.8K]

Answer:

88.51 is the minimum score needed to receive a grade of A.          

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 73

Standard Deviation, σ = 11

We are given that the distribution of exam grades is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.0793.

P( X \geq x) = P( z \geq \displaystyle\frac{x - 73}{11})=0.0793  

= 1 -P( z \leq \displaystyle\frac{x - 73}{11})=0.0793  

=P( z \leq \displaystyle\frac{x - 73}{11})=0.9207  

Calculation the value from standard normal z table, we have,  

P(z \leq 1.410) = 0.9207

\displaystyle\frac{x - 73}{11} = 1.410\\x =88.51  

Hence, 88.51 is the minimum score needed to receive a grade of A.

3 0
3 years ago
Simplify 7 sqare root 3 takeaway 2 sqare root 3 add sqaure root 3 takeaway 3 sqaure root 3
Paha777 [63]

Answer:

tel:+18446450594

Step-by-step explanation:

8 0
2 years ago
Do two whole numbers always have a least common multiple?
finlep [7]
Yes. i am pretty sure
4 0
3 years ago
John has a box that is in the shape of a cube (i.
Artemon [7]
A box (cube) has all equal edges or sides (s), thus the volume (v) of the cube is:
v =  {s}^{3} \\ 27 \:  {in}^{3} =  {s}^{3}  \\  \sqrt{( {s}^{3}) } =  \sqrt{( {27in}^3)}  \\ s = 3 \: in
So since each side or edge around is 3 in, then the length around the square bottom of the box = 4×3 = 12 in
5 0
2 years ago
3. A company with loud machinery needs to cut its sound intensity to 44% of its original level. By how many decibels would the l
sergeinik [125]

Answer:   <em>3.   The correct option is:  A) 3.57 decibels.</em>

<em>6.   The correct option is:  B) ln(\frac{x^2}{c^5})</em>

Step-by-step explanation:

3.    Sound intensity is cut to 44% of its original level. That means, if the original sound intensity was 100, then now sound intensity will be 44.

So,  I_{0}= 100 and I= 44

Using the formula L= 10log(\frac{I}{I_{0}}), we will get.....

L= 10log(\frac{44}{100})\\ \\ L= 10log(0.44)\\ \\ L= 10(-0.3565...)=-3.565...\approx -3.57

<em>(Rounded to the nearest hundredth)</em>

So, the loudness would be reduced by 3.57 decibels.


6.    Given expression is:    2ln(x) - 5ln(c)

First applying the property m*log(x)= log(x^m) , we will get.....

ln(x^2)-ln(c^5)

Now using the formula, log(a)-log(b)= log(\frac{a}{b}), we will get....

ln(x^2)-ln(c^5) = ln(\frac{x^2}{c^5})

Thus, the answer as a single natural logarithm is   ln(\frac{x^2}{c^5})

8 0
3 years ago
Other questions:
  • What is the answer to the problem, -7^2?
    9·2 answers
  • The area of a rectangle is 352in2. If the width of the rectangle is x inches, write a function for the perimeter, P(x)
    11·1 answer
  • What does a rotation preserve
    14·1 answer
  • How many solutions does the equation have?
    15·1 answer
  • Please show me how to COMPLETELY factor this expression.
    9·1 answer
  • The following dataset represents the number of registered students for 60 college courses, sorted and arranged in rows of 5. Wha
    10·1 answer
  • please help. i stayed up all night finishing this schoolwork i need help pleaseee please omg im begging someone to help me
    6·1 answer
  • If I make $1,000 per minute how much time will it take to make $1,000,000?
    5·2 answers
  • 10. How many solutions does this system of equations have? Explain how you know.
    9·1 answer
  • The graph below shows the cost of pet food each month is proportional 10 points
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!