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
AysviL [449]
3 years ago
10

The college bookstore is having a back to school sale . T-shrits that usually sale for 34.50 are marked down to 20.7 what percen

t off are they?
Mathematics
1 answer:
Maslowich3 years ago
3 0

Answer:

40%

Step-by-step explanation:

34.50-40%

You might be interested in
What does comp goku scale to?<br><br>​
hammer [34]

Answer:

Goku (Super Saiyan 3)

Super Saiyan 3 Goku at full power has a battle power of 24,000,000,000, 2 billion above Kid Buu's level.

7 0
3 years ago
Read 2 more answers
PLS I NEED ASAP WILL GIVE BRAINLIEST
Darya [45]

For this case we have that by definition, a linear equation is of the form:

ax + b = 0

The variable (s) involved in the equation always have exponent 1.

Some examples of linear equations are:

x + 5 = 3y\\y + 6 = 3x\\y = 2x + 2

Answer:

In a linear equation the variables have exponent 1.

y = 2x + 2

5 0
2 years ago
On any given day, the probability that a large local river is polluted by carbon tetrachloride is 0.12. Each day, a test is cond
babymother [125]

Answer:

a) 0.2416

b) 0.4172

c) 0.0253

Step-by-step explanation:

Since the result of the test should be independent of the time , then the that the test number of times that test proves correct is independent of the days the river is correct .

denoting event a A=the test proves correct and B=the river is polluted

a) the test indicates pollution when

- the river is polluted and the test is correct

- the river is not polluted and the test fails

then

P(test indicates pollution)= P(A)*P(B)+ (1-P(A))*(1-P(B)) = 0.12*0.84+0.88*0.16 = 0.2416

b) according to Bayes

P(A∩B)= P(A/B)*P(B) → P(A/B)=P(A∩B)/P(B)

then

P(pollution exists/test indicates pollution)=P(A∩B)/P(B) = 0.84*0.12 / 0.2416 = 0.4172

c) since

P(test indicates no pollution)= P(A)*(1-P(B))+ (1-P(A))*P(B) = 0.84*0.88+  0.16*0.12 = 0.7584

the rate of false positives is

P(river is polluted/test indicates no pollution) = 0.12*0.16 / 0.7584 = 0.0253

4 0
3 years ago
Need help please!!!!
Orlov [11]

Answer:

\frac{m + n}{m - n }  =   \frac{ - 8 + 4}{ - 8 - 4}

=-4/-12=1/3 is your answer

5 0
3 years ago
2 For each figure, are 21 and 22 adjacent angles or vertical angles? Explain.<br> b.<br> a.<br> 2
kupik [55]

Answer:

a is vertical and b is adjacent angles

3 0
2 years ago
Other questions:
  • A comedy show sells lower level tickets for $77 and upper level tickets for $99. On the opening night 2615 tickets were sold for
    8·2 answers
  • If x = 17 cm and y = 8 cm, what is the length of z? A. 13 cm B. 19 cm C. 14 cm D. 15 cm
    5·1 answer
  • 3x+2=11,what does this equal to I’m confused
    10·2 answers
  • Which of the following lists is in order from smallest to largest?
    15·2 answers
  • Geometry math question no Guessing and Please show work thank you
    8·2 answers
  • A washer and dryer cost $810 combined. The washer costs $40 less than the dryer. What is the cost of the dryer?
    9·1 answer
  • You have to find the value of k
    7·1 answer
  • Which symbol is correct to compare the numbers – 2.8 and -1.5?
    14·1 answer
  • i just need a little help with this not all questions have to be answered i just want to know how to find it.
    5·1 answer
  • 3. Find m2ABC.<br><br><br> (2x+14)<br><br> (x+7)°
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!