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
blondinia [14]
2 years ago
14

the ratio of boys to girls in the grade 3 classes at domino primary school is 3:5 . if there are 280 grade 3 learners, how many

are girls?​
Mathematics
1 answer:
melamori03 [73]2 years ago
7 0

9514 1404 393

Answer:

  175

Step-by-step explanation:

Let g represent the number of girls. Then 280-g is the number of boys. Their ratio is ...

  boys/girls = 3/5 = (280-g)/g

Clearing fractions gives ...

  3g = 5(280 -g)

  8g = 1400 . . . . eliminate parentheses, add 5g

  g = 175 . . . . . . . divide by 8

There are 175 girls in the grade 3 classes at Domino Primary School.

You might be interested in
What is the measure of angle A'B'C?
Agata [3.3K]

All Angles Added: 180

Measures of Idiviudual Angles

A=70   C=70  B=40

-------------------------------------------------------------------------------

Step-by-step explanation:

All angles of a triangle when combined must equal 180 degrees.

Since the triangle is an isosceles triangle, at least 2 sides must be congruent meaning that A=C since the triangle is not equilateral.

3 0
3 years ago
What is the area of this figure?
s2008m [1.1K]

Step-by-step explanation:

it clearly consists of 2 rectangles and 1 triangle (as you tried correctly to point out by drawing the separating lines).

we only need to calculate all 3 areas and add them up for the total.

the area of a rectangle is

length × width

so, in our 2 cases we have

6 × 2 = 12 km²

5 × (3 + 2 + 3) = 5×8 = 40 km²

the area of a triangle is

baseline × height / 2

in case of a right-angled triangle the 2 sides enclosing the 90° angle can be used as baseline and height.

so, in our case

6 × (5 + 2 + (3 + 2 + 3 - 2)) / 2 = 6×(7 + 6)/2 = 3×13 = 39 km²

in total, the whole area is

12 + 40 + 39 = 91 km²

4 0
1 year ago
How to use the unit circle to find the value of tan (-180)?
vodomira [7]
The point on the unit circle corresponding to -180 degrees is
 ((x, y) = (-1, 0). 

<span>tan(-180°) = y/x = 0/(-1) = 0</span>
3 0
3 years ago
Marlena created a table of values representing the height in feet, h(t), of a coconut falling to the hard ground with a height o
oee [108]

Answer is CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

7 0
3 years ago
Read 2 more answers
The length of a picture frame is 6 inches more than the width. For what values of x is the perimeter of the picture frame greate
zhannawk [14.2K]

Answer:

35

Step-by-step explanation:

35 is exactly 152 but since its asking for greater then you're right it is 36.

But since it says '>' it means not equal to so it would be:

x > 35

or

x ≥ 36

3 0
2 years ago
Other questions:
  • Which two segments have the same length
    6·2 answers
  • ABC is congruent to FGH, AB=8.3, BC=10.4, and CA=4.2. What is the measure of segment GH?
    13·2 answers
  • I would like to know the process for dis ive been struggling on them. i tried to ask the teacher but they made it more confusing
    13·1 answer
  • Plz help me with this problem
    8·1 answer
  • Help will mark brainliest
    8·1 answer
  • A punch recipe that serves 24 people calls for 4 liters of lemon-lime soda, 2 pints of sherbet, and 6 cups of ice. How much of e
    14·1 answer
  • The population of a city decreases by 3.5% per year . If this year´s population is 195,000 what will next year´s population be ,
    15·2 answers
  • PLEASE HELP !!!!!!!!!!!!!!
    9·1 answer
  • Use the Algebra Tiles to construct the algebraic expression for this situation:
    10·2 answers
  • Is (-2 , 3) a solution of the graphed inequality?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!