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
Diano4ka-milaya [45]
3 years ago
15

there are a total of 500 students in grades 1 through 5 in an elementary school. 17% of the total number of students are in 1st

grade. 19% of the total number of students are in 4th grade. The number of 3rd-grade students is 9 less than the number of 4th-grade students. The number of 2nd-grade students is 10 less than the number of 5th-grade students. complete the table to show the number of students in each grade. enter your answers in the table.
Mathematics
2 answers:
Galina-37 [17]3 years ago
8 0

Answer:


Step-by-step explanation:

5th would have to be 122 if you do the math

Dmitry_Shevchenko [17]3 years ago
4 0
17% of the total number of students are in 1st grade
→0.17×500=85 students in 1st grade
19% of the total number of students are in 4th grade
→0.19×500=95 students in 4th grade
<span>The number of 3rd-grade students is 9 less than the number of 4th-grade students.
→95-9=86 students in 3rd grade
</span><span>The number of 2nd-grade students is 10 less than the number of 5th-grade students.
1st grade+4th grade+3rd grade=85+95+86=266
500-266=234=total number of students in 2nd grade and 5th grade
Let x=2nd grade students
Let y=5th grade students
x+y=234
2nd grade students is 10 less than the number of 5th grade students
→x=y-10
Since x=y-10 so we substitute y-10 for x
→y-10+y=234
→2y-10=234
       +10  +10
→2y=244
→2y/2=244/2
→y=122 students in 5th grade
x+y=234
→x+122=234
→x=112 students in 2nd grade
ANSWERS:
1st: 85
2nd: 112
3rd: 86
4th: 95
5th: 122

</span>
You might be interested in
What are the answers?
const2013 [10]

Answer:

Circle = 7

Pentagon = 8

Square = 12

Square + Square + Square = 36

Step-by-step explanation:

Since you know the circle is 7, the square plus the pentagon must be 20. That means the pentagon in the third equation is 8. This means the square is 12.

So, 12 + 12 + 12 = 36.

3 0
3 years ago
Read 2 more answers
Use the numbered angles in the diagram to answer the question.
iogann1982 [59]
I’m pretty sure it would be angle 3 and angle 5 and then angle 1 and angle 7
6 0
2 years ago
There are many ways to measure the reading ability of children. Research designed to improve reading performance is dependent on
ELEN [110]

Answer:

A 90% confidence interval to estimate the mean DRP score in Henrico County Schools  is =32±2.7280

i.e. C.I.  [29.3,34.7]

Hence the results are not significant.

Step-by-step explanation:

Given:

Total no of students =44

True mean =32

Standard deviation=11

And all 4 students score also given.

To Find:

90 % confidence interval and conclusion on it.

Solution:

Here for C.I. we required mean, standard deviation and no of students.

So mean =32,S.D.=11 and n=44

Therefore , For 90 % interval Zscore is Z=1.645

C.I.=mean±Z[Standard  deviation/Sqrt(n)]

=32±1.645[11/Sqrt(44)]

=32±1.645[1.6583]

=32±2.7280

i.e. C.I.  [29.3,34.7]

Now Here to commit on calculated interval we should check  value of Z-score

So we need to calculate the sample mean.

Sample mean =Sum of all values /Total no of values.

=[40+ 26 +39+ 14+ 42+ 18 +25+ 43+ 46 +27 +19+ 47+ 19 +26+ 35 +34+ 15+ 44 40+ 38+ 31+ 46 +52 +25+ 35 +35+ 33 +29 +34 +41 +49+ 28+ 42+ 47 +35 +48 +22 33+ 41 +51 +27 +14+ 54 +45]/44

=34.86

Z-score=(sample mean -true mean)/[standard deviation/Sqrt(n)]

=(34.86-32)/[11/Sqrt(44)]

Z=1.72465

For ,

P(Z≥1.72465)=0.08544

For 0.05 significance level  the results are not significant at  p<0.01.

Researcher claimed mean is not correct upto 0.05 significant level

i.e calculated mean and Sample mean are different.

Hence the results are not significant.

6 0
2 years ago
A newspaper conducted a survey to find out how many high school students play video games.The two ways table below displays the
zepelin [54]

Answer:

Step-by-step explanation:

Given that

We are given the following:

1. Boys who do play video games = 1593

2. Boys who do not play video games = 858

3. Total boys = 2451

4. Girls who do play video games = 1361

5. Boys who do not play video games = 1635

6. Total Girls = 2996

7. Total number of candidates = Total boys + Total girls

=(2451 + 2996) = 5447

8. Total number of students, who play video games = 2954

9. Total number of students, who do not play video games = 2493

Percentage of boys who play video games:

\dfrac{1593}{2451} \times 100 = 64.99\%

So, option A is not correct.

Percentage of girls who play video games:

\dfrac{1361}{2996} \times 100 = 45.43\%

so option B is correct. The percentage is near about 45%,

Percentage of Total number of students, who do not play video games:

\dfrac{2493}{5447} \times 100 = 45.77\%

So, option C is not correct.

7 0
3 years ago
Brent sells an avarage of 52 pot holders each week. about how many pot holders does he sell in 58 weeks.
Inessa [10]

The amount of pot holders Brent sold for 58 weeks is 3016

<h3>How to find the amount of pot holders Brent sold?</h3>

He sells 52 pot holders each week.

This means for every week, he sold 52 pot holders. Therefore, the amount of pot holders he sold for 58 weeks can be solved as follows:

1 week = 52 pot holders

58 weeks  = ?

cross multiply

number of pot sold for 58 weeks = 58 × 52

number of pot sold for 58 weeks = 3016

learn more on sells here:brainly.com/question/17562675

#SPJ1

6 0
2 years ago
Other questions:
  • What is the unit value of the 3 in 432
    5·2 answers
  • I need help is it A B C or D
    13·1 answer
  • When 18 is reduced by two-thirds of a number the result is 12 find the number
    11·1 answer
  • Write an equation of the line containing point (5,-4) and parallel to line x=2.
    6·1 answer
  • What is the domain of the graph? A) 2 &lt; x &lt; 5 B) 2 ≤ x ≤ 5 C) 3 &lt; y &lt; 5 D) 3 ≤ y ≤ 5
    11·2 answers
  • Which point lies on the line described by the equation below? y + 3 = 2(x - 1)
    10·2 answers
  • 52 is 12.5% of what number
    11·2 answers
  • What is energy and what is it
    8·2 answers
  • ANSWER !! <br> ILL GIVE 40 POINTS !!<br> DONT SKIP :(( <br> PLUS BRAINLIEST !
    11·2 answers
  • Ashin has been working in UAE for a decade and saved AED 125,500 which he wants to transfer now to his parent's account in India
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!