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Orlov [11]
3 years ago
6

100% & There are 16 girls and 18 boys in a class. The teacher chooses a student's name at What is the probabilit

y that the teacher chooses a girl to answer the question?
A.
34
O
B.
16
o
C.
8
17
OD.
Ol
Mathematics
2 answers:
Mariulka [41]3 years ago
8 0

Answer:a

Step-by-step explanation:

djyliett [7]3 years ago
8 0

Answer:

my answer iA. because 16+18 =34

You might be interested in
write an equation in slope intercept form for the line that passes through (4, -4) and is parallel to 3x+4x=2y-9
photoshop1234 [79]

Answer:

\large\boxed{y=\dfrac{7}{2}x-18}

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

Convert the equation of a line 3x + 4x = 2y - 9 to the slope-intercept form:

3x+4x=2y-9

7x=2y-9             <em>add 9 to both sides</em>

7x+9=2y       <em>divide both sides by 2</em>

\dfrac{7}{2}x+\dfrac{9}{2}=y\to y=\dfrac{7}{2}x+\dfrac{9}{2}

Parallel lines have the same slope. Therefore we have the equation:

y=\dfrac{7}{2}x+b

Put the coordinates of the point (4, -4) to the equation:

-4=\dfrac{7}{2}(4)+b

-4=7(2)+b

-4=14+b       <em>subtract 14 from both sides</em>

-18=b\to b=-18

Finally we have the equation:

y=\dfrac{7}{2}x-18

8 0
4 years ago
Area of circle with diameter of 1 m?
Elena-2011 [213]

Answer:

A = 0.785m²

B = 31400cm²

C = 7850cm²

D = 785,000mm²

Step-by-step explanation:

To solve this question, we'll have to find the area of a circle which is

Area of a circle = πr²

1. The diameter of the circle = 1m

Area of a circle = πr²

r = radius of the circle

π = 3.14

Radius = diameter / 2

Radius = 1 / 2 = 0.5m

Area = 3.14 × (0.5)²

Area = 3.14 × 0.25

Area = 0.785m²

2. Radius = 100cm

Area of a circle = πr²

Area = 3.14 × (100)²

Area = 3.14 × 10000

Area = 31400cm²

3. Diameter = 100cm

Area = πr²

Radius = diameter / 2

Radius = 100 / 2

Radius = 50cm

Area = πr²

Area = 3.14 × (50)²

Area = 3.14 × 2500

Area = 7850cm²

4. Radius = 500mm

Area = πr²

Area = 3.14 × (500)²

Area = 3.14 × 250,000

Area = 785,000mm²

7 0
4 years ago
Read 2 more answers
This exercise involves the formula for the area of a circular sector. find the area of a sector with central angle 3π/5 rad in a
netineya [11]
The formula of interest is
  A = (1/2)r²·θ
You have r = 9 m, θ = 3π/5. Then the area is
  A = (1/2)(9 m)²(3π/5) = 24.3π m²

The sector area is ...
  A ≈ 76.3 m²
8 0
3 years ago
20 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
DerKrebs [107]
I cant understand could you make it clearer 
4 0
3 years ago
Which of the following is equivalent to -50 ?<br> 05.52<br> O 512<br> O 5V21<br> 0-52
Alex
- 05.52 because it has a limited amount
8 0
3 years ago
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