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
bija089 [108]
2 years ago
8

Students in Mrs. Palmer's third grade class are working on times tables, and they demonstrate mastery by passing tests. Evan has

passed 12 tests so far. His classmate, Ann, has passed 2 tests of them. From now on, Evan plans to take and pass 4 tests per week. Meanwhile, Ann plans to do 5 per week. At some point, Evan will catch up to Ann. How long will it take? How many tests will each child have passed?
Mathematics
2 answers:
natita [175]2 years ago
5 0

Step-by-step explanation:

10 weeks 52 tests

<u>pls mark brainliest if possible!</u>

<u>dm me if you want explanation</u>

hammer [34]2 years ago
4 0

Answer: Don't know

Step-by-step explanation:

You might be interested in
Is this linear or not and why
Fittoniya [83]

Answer:

  • Yes

Step-by-step explanation:

Both equations of this system are of degree one.

They are both linear as the graph of both is a line.

5 0
3 years ago
Read 2 more answers
Kabul’s bookshop marks up all books by 40 percent of their cost. The overhead rate is 16 percent of the selling price. What is t
morpeh [17]

Answer:

The net profit rate on the book is 5.41

Step-by-step explanation:

Given as :

The marks up percentage of book = m = 40%

The overhead rate is 16% of selling price

The cost price of book = c.p = $18.10

Let The profit = $p

Let The selling price = s.p

<u>Now, According to question</u>

mark up percentage = \dfrac{s.p - c.p}{c.p}

I.e 40% =  \dfrac{s.p - 18.10}{18.10}

Or, \dfrac{40}{100} + 1 = \dfrac{s.p}{18.10}

Or, \dfrac{140}{100} =  \dfrac{s.p}{18.10}

Or, s. p = \dfrac{140\times 18.10}{100}

∴ s.p = $25.34

So, selling price of book = s.p = $25.34

Now, The overhead percentage = 16%

i.e overhead rate = \dfrac{\textrm estimated cost}{\textrm estimated total base unit}

Or, estimated cost = 16% × 25.34

I,e estimated cost = 0.16 × 25.34

∴ estimated cost = $4.05

Now,

Profit = selling price of book - estimated book cost

I.e p = $25.34 - $4.05

∴ p = $21.29

So, The profit rate% = \dfrac{\textrm profit}{\textrm estimated cost}

I.e The profit rate% = \dfrac{21.29}{4.05}

∴ profit rate %= 5.41

So, The profit rate = p = 5.41

Hence, The net profit rate on the book is 5.41  Answer

4 0
3 years ago
Assume that random guesses are made for eight multiple choice questions on an SAT test, so that there are n= 8 trials, each with
alina1380 [7]

Answer:

0.80589

Step-by-step explanation:

So all of the numbers of correct answers less than 4 are 0,1,2,3

We need to calculate the probability for each separately and then add them together.

To find the probability we have to first find the combination. We know that there’s n=8 trials and that p=0.3. So 1-0.3 gives us 0.7.

The combination formula is: ! / (!(−)!)

So the n would always =8, and the r would be 0,1,2,3. So you would have to calculate it for 0,1,2,3 Separately. This can be done by hand or you can use a simple combinations calculator online.

For 0;

The combination is 1,

1 x 0.3^0 x 0.7^8-0 =

0.057648

For 1;

The combination is 8,

8 x 0.3^1 x 0.7^8-1 =

0.19765

For 2;

The combination is 28

28 x 0.3^2 x 0.7^8-2 =

0.296475

For 3;

The combination is 56

56 x 0.3^3 x 0.7^8-3 =

0.254122

All that’s left is to add these four numbers;

0.057647 + 0.19765 + 0.296475 + 0.254122 = 0.80589

4 0
3 years ago
The hour hand of a clock moves -15 degrees every hour how many degrees does it move in 1 1/4 hours
iren [92.7K]

Answer:

-18 3/4

Step-by-step explanation:

4 0
3 years ago
Mr. Rogers recorded the height of 15 students from two of his classes. Based on these samples, what generalization can be made?
Sati [7]
You are not giving enough information but in one of the calsses the average of student's height might be greater than the other class beacause one of the two classes needs to have 1 extra person than the other calss
6 0
3 years ago
Other questions:
  • A student on the track team runs 45 minutes each day as a part of her training. She
    6·1 answer
  • Pleaseee help i’m literally dying
    5·1 answer
  • Please help!!!!!!!!!!
    12·1 answer
  • Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 452 Select three options
    9·2 answers
  • Mia´s family arrived at their destination at 6:00 p.m after a 2-hour trip on a plane.
    15·1 answer
  • What is the answer for x?
    10·1 answer
  • Find the value of x in the triangle shown below.<br><br> X=____<br><br> Please help!!
    14·2 answers
  • I Usually don't ask for help but I need help I give 35 points if you help me and give me the answer also with the explanation Th
    8·1 answer
  • PLEASE PLEASE PLEASE HELP
    9·1 answer
  • Transversal cuts parallel lines and as shown in the diagram, and m∠4 = 55.1°. What are m∠5 and m∠7? A. m∠5 = 34.9°, and m∠7 = 14
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!