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olga_2 [115]
3 years ago
9

In a class of 30 students, 18 are boys.what percent of students are girls

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
4 0

There are 30-18 = 12 girls. Their percentage is

... 12/30 × 100% = 40%

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Help me please I'm struggling ​
Umnica [9.8K]

Answer:

Step-by-step explanation:

1.

-4\leq \frac{x+5}{3} \leq 7\\multiply~each~inequality~by~3\\-12\leq x+5\leq 21\\subtract~5~from~each~inequality\\-17 \leq x\leq 16

2.

cosθ+sinθ tan θ

=cosθ+sin θ×(sinθ)/(cosθ)

=\frac{cos^2 \theta+sin ^2 \theta}{cos \theta} \\=\frac{1}{cos \theta} \\=sec \theta

3.

x²+(y-6)²=35

x²+y²-12y+36=35

x²+y²-12y+1=0

put x=r cosθ

y=r sin θ

square and add

x²+y²=r²cos²θ +r² sin²θ=r² (cos² θ+sin² θ)=r²

r²-12rsinθ+1=0

6 0
2 years ago
the probability of winning the shell games if you randomly pick is 1 in 3. what would be the appoximate probability of winning 4
Olenka [21]

Answer:

1/81

Step-by-step explanation:

7 0
3 years ago
What is the rate of change (slope), given these two points (1,-3) and (7,-6)
nadezda [96]

Answer: -1/2

Step-by-step explanation: to find slope, use the equation (y2-y1) / (x2-x1)

(-6 - -3) / (7 - 1)

-3 / 6

= -1/2

5 0
2 years ago
Dose 8 has more factors or 9
Doss [256]

Answer:

Factors for 8: 1, 2, 4, 8

Factors for 9: 1, 3, 9

So 8 has more factors

7 0
2 years ago
What is 18/90 in simplest form?
3241004551 [841]
Both the numerator and the denominator can be easily divided by 9. so you get:
2/10
as you can tell it can still be simplified. both the numerator and denominator can be divided by 2. so your final answer is
1/5
4 0
3 years ago
Read 2 more answers
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