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3 years ago

If 55% of the students in a school are boys and number of girls is 900. Find the number of boys.

Mathematics

2 answers:

Reil [10]3 years ago

7 0

Answer: 1100 boys

Step-by-step explanation:

45% students are girls

45% girls in number = 900

1% be = 900x45= 20

55% students are boys

55% boys in number= 55x20= 1100 boys

Masteriza [31]3 years ago

7 0

Answer:

1100

Step-by-step explanation:

The whole school population is represented by 100%, thus

number of girls = 100% - 55 = 45% of population

divide 900 by 45 to find 1% then multiply by 55 to find number of boys

number of boys = $\frac{900}{45}$ × 55 = 1100

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lapo4ka [179]

Answer:

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Step-by-step explanation:

For any angle $\theta$ , we have that:

$(\sin{\theta})^{2} + (\cos{\theta})^{2} = 1$

Quadrant:

$0 \leq \theta \leq \frac{\pi}{2}$ means that $\theta$ is in the first quadrant. This means that both the sine and the cosine have positive values.

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$(\frac{1}{4})^{2} + (\cos{\theta})^{2} = 1$

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neonofarm [45]

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Step-by-step explanation:

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3 years ago

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Masteriza [31]

Answer:

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Step-by-step explanation:

We need to find the find all the points having an x coordinate of 2 whose distance from the point (-2,-4) is 5.

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Standard form of a circle is

$(x-h)^2+(y-k)^2=r^2$

where, (h,k) is center and r is the radius.

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$(2+2)^2+(y+2)^2=25$

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$y+2=\pm\sqrt{9}$

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2 years ago

F) Two numbers are in the ratio 5:4. If they differ by 12, what are the numbers?

Iteru [2.4K]

Answer:

First number = 60 and another number = 48

Step-by-step explanation:

Let two numbers are 5x and 4x.

The two number are differ by 12. We need to find the numbers.

ATQ,

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x = 12

Now first number = 5x

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Hence, the numbers are 60 and 48.

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3 years ago