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umka2103 [35]
3 years ago
13

The dual bar chart shows the hair colour of boys and girls in a year group. What fraction of the students are girls? Give your a

nswer in its simplest form

Mathematics
2 answers:
maxonik [38]3 years ago
4 0

Answer:

5/11

Step-by-step explanation:

Black= 22 b + 17 g

Brown= 4 b + 18 g

Blonde= 25 b + 10 g

Red= 21 b + 15 g

  • Total number= 22+17+4+18+25+10+21+15= 132
  • Number of girls= 17+18+10+15= 60
  • Girls are 60/132= 2 × 2 × 3 × 5/ 2 × 2 × 3 × 11= 5/11 of all students
Marizza181 [45]3 years ago
4 0

Answer:

5/11

Step-by-step explanation:

there are 72 boys and 60 girls. that means there are 132 students on total.

60/132 = 5/11

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Somebody please help!
Leona [35]
The answer would be 101

Steps:
2+8=10
10x10=100 (because of the exponent)
100+1=101
3 0
3 years ago
Find the area of the shaded region
PIT_PIT [208]

Answer:

Area of the shaded region= 500inch^2

Step-by-step explanation:

Area of the shaded region= Area of the triangle- Area of the rectangle

Dimensions of the triangle:

Base= 40 inch

Height= 40 inch

Area of a triangle=\frac{1}{2}*Base*Height

           =\frac{1}{2}*40*40\\\\ =\frac{1}{2} *1600\\\\=800 inch^2

Area of the rectangle= Length*Width

Length=30 inch

Width=10 inch

Area:

          = 30*10\\\\=300 inch^2

Area of the shaded region=  800-300= 500 inch^2

3 0
3 years ago
Find the value of x in the triangle
lianna [129]

Answer:

x = 29 degrees

Step-by-step explanation:

We know that all of the angles inside of a right triangle add up to 180. We also know that a right angle is 90 degrees. We can do 61 + 90 = 151. 180 - 151 = 29. This means that x = 29 degrees.

7 0
2 years ago
Read 2 more answers
What is the area of this face?
SSSSS [86.1K]

Answer:

Hello! answer: 180

Step-by-step explanation:

what I did to find answer is cut them into pieces I cut the m into 3 pieces and now just have to multiply my base x height so for the left one I did 12 x 6 = 72 for the middle I did 6 x 6 = 36 and for the right one I did 12 x 6 = 72 I add these up so...

72 + 36 + 72 = 180 so the surface area is 180! I hope this helps!

4 0
2 years ago
Suppose a triangle has sides a, b, and c, and let theta be opposite the side of length a. If cos theta < 0, what must be true
katrin2010 [14]
If \cos \theta\ \textless \ 0, then angle \theta is obtuse and triangle with sides a, b, c is obtuse triangle.
In an arbitrary triangle can be only one obtuse angle, and the side which lies opposite to the largest angle is the largest. Then since <span>angle \theta is opposite the side of length a</span>  you can conclude that a>c and a>b.



6 0
3 years ago
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