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3 years ago

PLZ ASAP NEED HELPPPP (3rd 1 today XD)

Mathematics

2 answers:

sergiy2304 [10]3 years ago

8 0

Answer:

solution,

a. Percentage of boys who have school dinners:

 $\frac{6}{10} \times 100 \\ = 60 \: percent$ 

b.percentage of pupils who have school dinners:

 $\frac{13}{20} \times 100 \\ = 65 \: percent$ 

hope this helps....

Good luck on your assignment...

melomori [17]3 years ago

7 0

Answer:

A) 30%

B) 65%

Step-by-step explanation:

Total pupils=20

Boys that have school dinners=6/20

6/20=30/100=30%

Pupils that have school dinners=13/20

13/20=65/100=65%

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nataly862011 [7]

Probability helps us to know the chances of an event occurring. The probability of Linda's dart hitting the circle is 0.7857.

<h3>What is Probability?</h3>

The probability helps us to know the chances of an event occurring.

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As it is given that the circle touches the sides of the square. therefore, the length of the side of the square is the diameter of the circle.

Now, in order to calculate the probability that the dart hits a point in the circle we need to calculate the area of the circle and the area of the square.

Area of the circle with a given radius of 9 units,

$\text{Area of the circle} = \pi r^2$

$\rm = \pi \times (9^2)\\\\= 81\pi\ units^2$

Area of the square with sides equal to the diameter of the circle,

$\rm \text{Area of square} = side^2$

$\rm = Diameter ^2\\\\= (2 \times radius)^2\\\\= (2 \times 9)^2\\\\= 18^2\\\\= 324\ units^2$

Now, the probability that the dart hits a point in the circle can be written as,

$\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}\\\\\\Probability=\dfrac{\text{Area of the circle}}{\text{Area of square}}\\\\\\Probability=\dfrac{81 \pi}{324} = 0.7857$

Hence, the probability of Linda's dart hitting the circle is 0.7857.

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2 years ago

Marcie cooked dinner for herself. The original recipe has a serving size of 3 and requires three and three sevenths pounds of ch

Sati [7]

Using proportions, the number of pounds that will be needed for a single serving is: one and three seventh pounds.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

The number of pounds for 3 people is given by:

$3 \frac{3}{7} = 3 + \frac{3}{7} = \frac{24}{7}$

Hence, for one person, the number of pounds can be divided by three(multiplied by 1/3), hence:

$\frac{24}{7} \times \frac{1}{3} = \frac{24}{21}$

24 divided by 21 has a quotient of 1 and remainder of 3, hence as a mixed number, the amount is:

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2 years ago

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SVETLANKA909090 [29]

Answer:

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3 years ago

7 -2/b < 5/b solve the inequality

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7 - 2/ b < 5/b

or, 7 < 5/b + 2/b
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3 years ago

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If the grain pile has a diameter of 30 feet and a height of 16 feet, what is the volume of the grain pile? In terms of TT.

krek1111 [17]

Answer: 75TT

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2 years ago