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Marysya12 [62]
2 years ago
13

There are 20 children in the cast of a class play, and 8 of the children are boys. of the boys, 4 have a speaking part in the pl

ay, and of the girls, 8 do not have a speaking part in the play. if a child from the cast of the play is chosen at random, what is the probability that the child has a speaking part?
Mathematics
1 answer:
likoan [24]2 years ago
6 0
The probability that a child with a speaking part is chosen randomly would be 2:5.
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Henry wants to double a cake recipe that uses 2 cups and 10 tbsp of flour. How much flour will he need?
Lubov Fominskaja [6]

Answer:

20 tbsp of flour OR 1.25 or 1 \frac{1}{4} cups of flour

Step-by-step explanation:

10 tbsp of flour

*2

____________

20 tbsp of flour OR 1.25 or 1 \frac{1}{4} cups of flour

5 0
2 years ago
Julian is using a biking app that compares his position to a simulated biker traveling Julian's target speed. When Julian is beh
Gwar [14]

Answer:

11 km/hr.

Step-by-step explanation:

Given information:

Simulated speed = 20/km/h

Time = 15 mins = 1/4 hr = 0.25 hr

Distance Covered as per simulated speed = 20\times \frac{1}{4}=5km

Position of Julian according to the app = -2\frac{1}{4}=-2.25.

Actual distance covered by the bike is

Distance= 5 - 2.25 = 2.75km

Formula for speed:

\text{Average Speed}=\frac{Distance}{Time}

\text{Average Speed}=\frac{2.75}{0.25}

\text{Average Speed}=11

Therefore, the average speed of Julian is 11 km/hr.

5 0
2 years ago
A scientist is studying tulips and daffodils. The scientist estimates that there are 150 tulips in the population of 600 tulips
Flauer [41]

Answer:  Last Option is correct.

Step-by-step explanation:

Since we have given that

Total number of tulips and daffodils = 600

Number of tulips = 150

Number of daffodils is given by

600-150\\\\=450

So, We can get the ratio of tulips to daffodils which is given by

Tulips:Daffodils\\\\150:450\\\\1:3

So, we need to choose a random sample of flowers to represent the population.

1) He can choose 50 flowers.

As there are 1:3 of tulip and daffodils flowers but if we divide 50 by 4 it will give a decimal number, so it can't represent the required thing.

2) He can choose 25 tulips and 25 daffodils

As they are divided into 1:1 so, it can't represent the 1:3 tulip to daffodils population.

3) He can choose 15 tulips and 60 daffodils

As it is divided into 1:4 inspite of 1:3.So it can't represent the required population.

4) He can choose 10 tulips and 30 daffodils.

So, Last option which states that he can choose 10 tulips and 30 daffodils as in this case the ratio of tulips to daffodils is 1:3.

Hence, Last Option is correct.

4 0
2 years ago
Read 2 more answers
Isaac drinks 8 glasses of water each day he say he will drink 2920 glasses of water in a year that has 365 days is the exact ans
OleMash [197]

Answer: Isaac will be able to drink 2920 glasses of water in a year if he drinks 8 glasses of water each day.

Step-by-step explanation:

365 • 8 = 2920

2920 ÷ 365 = 8

2920 ÷ 8 = 365

7 0
2 years ago
Read 2 more answers
A sphere has a volume of 33.5 cubic inches. which value is closest to the radius of this sphere in inches?
EastWind [94]
Radius = cube root (sphere volume * .75 / PI)radius = cube root (33.5 * .75 / PI)radius = cube root ( <span> <span> <span> 7.9975358904)
</span></span></span>radius =2 inches
Source:<span><span> </span> </span> http://www.1728.org/diam.htm


4 0
2 years ago
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