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
GenaCL600 [577]
3 years ago
7

Guys help please again

Mathematics
1 answer:
Anon25 [30]3 years ago
8 0
The answer is c and a
You might be interested in
The demand for a daily newspaper at a newsstand at a busy intersection is known to be normally distributed with a mean of 150 an
AURORKA [14]

Answer:

171 newspapers.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 150, \sigma = 25

How many newspapers should the newsstand operator order to ensure that he runs short on no more than 20% of days

The number of newspapers must be on the 100-20 = 80th percentile. So this value if X when Z has a pvalue of 0.8. So X when Z = 0.84.

Z = \frac{X - \mu}{\sigma}

0.84 = \frac{X - 150}{25}

X - 150 = 0.84*25

X = 171

So 171 newspapers.

4 0
3 years ago
The measures of three angles in a triangle are(2x+5) ,(x+17) , and (3x-4) What is the value of ?
Stells [14]

Answer:

x=27

Step-by-step explanation:

Triangle angle =180 degrees

180=2x+5+x+17+3x-4

180=6x+18

(180-18)/6=x

x=27

3 0
3 years ago
What is the true solution to the logarithmic equation?<br>log2 [log2(sqrt4x)]=1​
erastova [34]

Answer:4

Step-by-step explanation:

log₂[log₂(√4x)] = 1

log₂2 =1

So we replace our 1 with log₂2

log₂[log₂(√4x)] = log₂2

log₂ on bothside will cancel each other.

We will be left with;

[log₂(√4x)] = 2

log = power of exponential

√4x = 2²

√4x = 4

Square bothside

(√4x)² = 4²

4X = 16

Divide bothside by 4

4x/4 = 16/4

x = 4

8 0
3 years ago
Read 2 more answers
Find the volume of the sphere shown to the right. Give an answer in terms of pi and rounded to the nearest cubic unit.
Vladimir [108]
The correct answers are:
Exact volume = V = \frac{32}{3} \pi in^3
Approximate volume = V = 33.51 in^3 

Explanation:

The volume of the sphere is: V = \frac{4}{3} \pi r^3

Since r = 2 in

Hence
V = \frac{4}{3} \pi (2)^3 \\ V =  \frac{32}{3} \pi in^3 (exact)
V = 33.51 in^3 (approximate)
5 0
3 years ago
Write the equation of the line that passes through the points
Strike441 [17]

Answer:

y= -1/2x +5.5

Step-by-step explanation:

hope this helps :)

4 0
3 years ago
Other questions:
  • What is the value of x?
    9·2 answers
  • For 50 points please help
    15·1 answer
  • Luke opened a savings account with a balance of $0.00 and deposited $20.00. During the next 2 weeks, he made two more deposits f
    6·2 answers
  • Write an equation for a line with a slope of<br> 3 and a y-intercept of (0, 2).
    15·1 answer
  • PLease help! 20 points!!
    6·2 answers
  • You want to purchase a book that costs $12.99. If there is a 5.5% sales tax, what will the total cost of the book be with tax?
    8·1 answer
  • 7. How many solutions does the given system have?
    14·2 answers
  • Find the value of x in the figure below if RE is parallel to PM.
    15·1 answer
  • Suzie bought 17.75 lbs of flour. If the price for 1lb is $19.68, calculate the total amount she paid to the shopkeeper
    7·2 answers
  • Will mark brainliest<br> Please help with these two questions for me
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!