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
AlladinOne [14]
3 years ago
8

What is the unit cost of seven oranges for $2.80

Mathematics
1 answer:
zepelin [54]3 years ago
6 0

Answer:$19.60

Step-by-step explanation: All you have to do is get 2.80 and times it by 7

You might be interested in
A true/false test has 40 questions. Suppose a passing grade is 30 or more correct answers. Test the claim that a student knows m
Angelina_Jolie [31]

Answer:

z≈3.16

p≈0.001

we reject the null hypothesis and conclude that the student knows more than half of the answers and is not just guessing in 0.05 significance level.

Step-by-step explanation:

As a result of step 2, we can assume normal distribution for the null hypothesis

<em>step 3:</em>

z statistic is computed as follows:

z=\frac{X-M}{\frac{\sqrt{p*(1-p)} }{\sqrt{N} } } where

  • X is the proportion of correct answers in the test (\frac{30}{40})
  • M is the expected proportion of correct answers according to the null hypothesis (0.5)
  • p is the probability of correct answer (0.5)
  • N is the total number of questions in the test (40)

z=\frac{0.75-0.50}{\frac{\sqrt{0.5*(0.5)} }{\sqrt{40} } } ≈ 3.16

And corresponding p value for the z-statistic is p≈0.001.

Since p<0.05, we reject the null hypothesis and conclude that the student knows more than half of the answers and is not just guessing in 0.05 significance level.

7 0
3 years ago
The table shows a cricket club's income in 2016 from a fete, a quiz and membership fees.
kirill [66]

Answer: 5:2:10

Income from fete = £250

13 x 5 + 35 = 100

25 x 20 = 500

250:100:500

Then simplify ratio -

25:10:50

5:2:10

8 0
2 years ago
Can somebody help me do this, please
natta225 [31]

Step-by-step explanation:

For the triangle on the bottom right the missing angle is

180- (74+50)= 56°

For the triangle on the bottom left the missing angle is

180- (45+80)= 55°

For the triangle in the middle the missing angle is

180- (54+51)= 75°

For the triangle on top the missing angle is

180- (80+54)= 46°

180- (74+51)= 55°

180- (46+55)= 79°

3 0
3 years ago
Translate point R located at (-6,-8) -4 in the x-direction and -2 in th y-direction
Troyanec [42]
((-6-4),(-8-2))

(-10,-10)
8 0
3 years ago
A Right Triangle (ABC) has sides measuring 3 inches and 4 inches. The hypotenuse is 5 inches. A similar right triangle (A'B'C')
fenix001 [56]

Answer:

The length of hypotenuse is 12.5

Step-by-step explanation:

First 7.5 x 7.5 = 56.25

Then 10 x 10 = 100

Add them together 56.25 + 100 = 156.25

Then square root 156.25 and you get 12.5

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which equation can be used to solve the problem? 
    8·2 answers
  • What is the simplified answer to this problem 12 &gt; -3x + 6
    13·1 answer
  • Solve the following:<br> a) 4x-1 / 2= x+7<br> b)<br> 3x + 2 = 2x + 13 /3
    13·1 answer
  • Eugene wants to buy jeans at a store that is offering a $10 discount on every item. The tag on the jeans is marked 50% off. The
    7·1 answer
  • The woods behind Adam's house were 12 miles wide and 25 miles long. What is the area and perimeter
    14·1 answer
  • Kasey needs 1.5 cups of milk and 4 cups of sugar to make 12 muffins. She plans to make 36 muffins . How many fl oz of sugar does
    5·1 answer
  • (2x + 9)<br> (2x - 5)°<br> 86°<br> (x + 3)<br> 1629<br> (x + 39)<br> What is the value of x?
    12·1 answer
  • Timothy borrowed $250 as a loan from his bank.The bank charges timothy $16.25 for the interest.What percentage of Timothy's loan
    10·1 answer
  • Which fraction correctly represents 0.54
    15·1 answer
  • Write the equation of the line that passes through the points (7,9) and (9, -3). Put your answer in fully reduced point-slope fo
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!