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3 years ago

75 % of the students are boys . There are 24 boys . What is the total number of Students

Mathematics

1 answer:

azamat3 years ago

6 0

Answer:

32 students

Step-by-step explanation:

24 divided by .75 is 32

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For which value of x must the expression radical 71x be further simplified?

Brilliant_brown [7]

Answer:

B 32

Step-by-step explanation:

sqrt(71*x)

71 is prime

sqrt(71) sqrt(x)

A. 19 prime

B. 32 = 16*2 16 is a perfect square

C. 34 = 2*17 both of which are prime

D. 41 prime

sqrt(71) sqrt(16 *2) = sqrt(71) * sqrt(16) * sqrt(2) = sqrt(71)*4*sqrt(2)

=4sqrt(142)

8 0

4 years ago

There are 6.02 × 1023 atoms in 1 gram of hydrogen. How many atoms are there in 800 grams of hydrogen? Write your answer in scien

snow_lady [41]

$6.02\cdot 10^{23}\cdot 800=4816\cdot 10^{23}\approx \boxed{4.82\cdot 10^{26}}$

5 0

3 years ago

Read 2 more answers

Use the fact that the world population was 2560 million in 1950 and 3040 million in 1960 to model the population of the world in

zimovet [89]

Answer:

The populaton in year 1991 will be of 5178.9 million of people

and the population in year 2020 will be of 8524.60 million of people

Step-by-step explanation:

We measure the time t in years and let t=0 in the year 1950.

We measure the population P(t) in millions of people, then P(0)=2560 and P(10) = 3040.

Since we are assuming that dp/dt=kP, this theorem gives the following.

$P(t) = P(0)e^{kt}= 2560e^{kt}$

$P(10) = 2560 e^{10k} = 3040$

$k=\frac{1}{10} ln (3040/2560) = 0.0171$

The relative growth rate is about 1.7% per year and the model is

$P(t) = 2560e^{0.017185t}$

<em>Year 1991 is equal in our formula to 41 and year 2020 is equal to 70. </em>Replacing,

$P(41) = 2560e^{0.017185(41)}=5178.89$

$P(70) = 2560e^{0.017185(70)}=8524.60$

Therefore the populaton in year 1991 will be of 5178.9 million of people and the population in year 2020 will be of 8524.60 million of people

6 0

3 years ago

Rhett decides to build a square room for his movie and music collection. If the area of the room is 4x2 + 28x + 49 square feet,

3241004551 [841]

B

Mark brainliest please

Hope this helps you

3 0

3 years ago

Jean's bedroom is 11 feet by 14 feet. She has chosen a carpet which costs $33.30 per square yard. This includes installation.

Allisa [31]

Answer:

The room will cost $569.80 to carpet.

Step-by-step explanation:

Recall that 1 square yard = 9 square feet.

The area of the bedroom, in square feet, is (11 ft)(14 ft) = 154 ft^2.

Converting this to square yards:

154 ft^2 1 yd^2

------------ * ------------ = 17.1 yd^2

1 9 ft^2

17.1 yd^2 $33.30

------------- * ------------- = $569.80

1 1 yd^2

The room will cost $569.80 to carpet.

5 0

3 years ago