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
Alisiya [41]
3 years ago
10

In a class of 32 students

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
6 0

Answer:

1.48 m

Step-by-step explanation:

In a class of 32 students

the mean height of the 14 boys is 1.56 meters.

the mean height of all 32 students is 1.515 meters.

Total number of students = 32

Mean height of all students = 1.515

We can obtain the sum of all student's height :

Number if students * mean height

= 32 * 1.515

= 48.48

Number of boys = 14

Mean height of boys = 1.56m

We can obtain the sum of all boys height :

Number if students * mean height

= 14 * 1.56

= 21.84

Number of girls :

All students - Number of boys

32 - 14 = 18

Sum of girls height :

48.48 - 21.84 = 26.64

Mean height of girls :

Sum of girls height / Number of girls

26.64 / 18

= 1.48 m

You might be interested in
A parking garage charges $4.50 for each hour you park. You have $18 in your pocket.
Eva8 [605]

Answer:

4 hours

Step-by-step explanation:

set up your equation

money to spend = charge per hour

18 = 4.50x

divide each side by 4.50

x = 4

4 hours

3 0
2 years ago
Read 2 more answers
Y=-1/2x +7
yarga [219]

Answer:

B; (2,-4)

Step-by-step explanation:

The general equation of a straight line is;

y = mx + b

where m is the slope and b is the y-intercept

So from the question, when we look at the given equation, its slope is -1/2

mathematically, when two lines are perpendicular, the product of their slopes is -1

thus;

m1 * m2 = -1

m2 * -1/2 = -1

-m2 = -2

m2 = 2

The general equation form is;

y-y1 = m(x-x1)

where (x1,y1) = (4,0)

y-0 = 2(x-4)

y = 2x - 8

So, now we look at the point that will work for this equation

For the line that will work, if we substitute its x-value, we get the y-value

Let us take a look at option B

y = 2(2) -8 = 4-8 = -4

we can see that (2,-4) works

4 0
2 years ago
Which function has the largest slope?
photoshop1234 [79]
C as you know what you’re going through to your point of what time you’re leaving the school you
4 0
3 years ago
Read 2 more answers
What's the value of 6x to the second power +4x+8, when x=7
lidiya [134]
6(7)^2+4(7)+8=y
6(49)+28+8=y
294+28+8=y
330=y
7 0
3 years ago
Read 2 more answers
hue Lake Trail is 1 miles has hiked miles each hour for How far is she from the end of the an 7.3) o
KonstantinChe [14]
Gemma was hiking for 2 1/2 a hour for 3 hours so u have to multiply 2.5 by 3 and that gonna equal 7.5 so u leave that alone and come back to it later so u get 11 3/8 minus 7.5 and it gonna equal 3 7/8 and I hope that helped you
3 0
3 years ago
Other questions:
  • Each day the wildlife commission releases 100 fish into the Durkee River in the following proportions: 55 brown trout and 45 rai
    14·1 answer
  • What is the inverse multiplication of 5+3i
    5·2 answers
  • How do I solve this?
    11·1 answer
  • Researchers at a medical school conducted a study to test the effectiveness of a new drug for lowering cholesterol. The 52 subje
    7·1 answer
  • Can someone please help me out? I am noooottt good at these.
    15·2 answers
  • 3. Marcus and Judy are picking apples. At the end of the day, Marcus has a apples. Judy has 5 times as many apples as Marcus. Wh
    6·2 answers
  • Erin solved the problem. 1,000-479=521 Which equation did Erin use ro check his answer?​
    14·1 answer
  • A building contractor is to dig a foundation 45 feet long, 16 feet wide and 6 feet deep. The contractor pays 13 dollars per load
    15·1 answer
  • How do you simplify 105 over 1000
    13·1 answer
  • Which choices are equivalent to the expression below? check all that apply. square root of 6 * square root of 10A. 2 sqrt 15b. s
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!