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
gizmo_the_mogwai [7]
3 years ago
7

In a class of 20 students, 40% are boys. 25% of the boys and 50% of the girls wear glasses. How many students wear glasses?

Mathematics
1 answer:
fredd [130]3 years ago
3 0
Calcualate 40% (0.40) times 20 to get that there are 8 boys in the class. The rest must be girls, so 20 - 8 gives you 12 girls. 25% (0.25) times the 8 boys gives you that 2 of the boys wear glasses. 50% (0.5) times the 12 girls tives you that 6 girls wear glasses. Add together the 2 boys and the 6 girls that wear glasses to get that a total of 8 students wear glasses.
You might be interested in
graph the image of this figure after a dilation with a scale factor of 2 centered at the origin use the polygon tool to graph t
Iteru [2.4K]

Answer:

For this answer, I will label the points. Starting at the top left, then top right, then bottom left and bottom right let the points be A, B, C, D.

The new coordinates will be

A(-4,10)

B(4,10)

C(-4,4)

D(4,4)

Step-by-step explanation:

The question is asking for a dilation which is a transformation that makes an image proportionately smaller or larger by a scale factor. The scale factor is how much smaller or larger the shape will be, if the scale factor is between 0 and 1 then it will shrink, if it is greater than one then the image will stretch (be larger). In this case, the scale factor is 2, therefore the image will stretch. Since the center of dilation is the origin, to find the new coordinates simply multiply each x and y value by the scale factor. So A's original coordinates (-2,5) become (-4,10) and so forth. Therefore the equation for this dilation is (x, y) → (2x,2y).

4 0
2 years ago
Read 2 more answers
Write first 10 pirme numbers and find median
likoan [24]

Answer:

2 3 5 7 11 13 17 19 23 27

Step-by-step explanation:

12 I think

5 0
3 years ago
HELP!! PLEASE!!! QUICK!!! 30 PTS!!!
FromTheMoon [43]
X + 2/3 = -2(4/5x-7)
Is equivalent to -2(x+2/3)=4/5x-7
So the answer would be A
8 0
3 years ago
A piece of wire bent to form a square of area 121cm2 . Calculate
Daniel [21]
ANSWER: 11cm

Square root of 121 is 11

So
A= L x W
A = 11 x 11
A = 121 cam 2

8 0
3 years ago
What is the simplest form of 70 / 196
drek231 [11]
\frac{70}{196} =  \frac{10}{28} = \frac{5}{14}
5 0
3 years ago
Other questions:
  • Segment AB and Segment CB are tangent to circle E. Which is NOT a property that can be used to prove that triangles ABD and CBD
    9·2 answers
  • Express 2.78 as a fraction in lowest term
    9·1 answer
  • When the value of a dependant variable decreases at the independent variable increases the function is said to be.....
    5·1 answer
  • Simplify the expression 2\3(-4)-(1/6-8/6
    8·2 answers
  • 10. I am a number between 7 000 000 and 8 000 000.
    13·1 answer
  • Is it 7?????????????????????????
    8·1 answer
  • How kilograms are in a carton of orange juice?
    6·1 answer
  • An international company has 29,100 employees in one country. If this represents 23.7% of the company's employees, how many empl
    6·1 answer
  • Pls pls pls answer I need this done before 10;50
    12·1 answer
  • Find the slope of the line (0,7), (4,4)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!