All categories

3 years ago

Total students= 27; girls:total students = 2:3. How many boys and girls are there?

Mathematics

2 answers:

mote1985 [20]3 years ago

6 0

Answer:

18 girls and 9 boys

Dimas [21]3 years ago

4 0

Answer:

Step-by-step explanation:

2:3 ?:27

How does 3 get to 27? x9. 2 x 9? 18

2:3 18:27

Information: 18 girls and 27 students.

The others must be boys. 27 - 18 = 9

There are 9 boys and 18 girls. Ratio: 9 to 18 or 9:18 or 9/18 You can simplify to 1 boy for every 2 girls. Ratio: 1 to 2 or 1:2 or 1/2

You might be interested in

Company XYZ has 34 employees in the Finance Department, 45 technicians, and 32 in the Engineering Department. The HR Department

Crank

Answer:

66.7%

Step-by-step explanation:

The total number of complaints were:

5 + 3 + 7 = 15

The percent that came from either technicians or the Finance Department is:

(5 + 3) / 15 × 100% = 66.7%

7 0

3 years ago

6x – 4y = -5 4x + 5y = -11

kipiarov [429]

Answer:

x= -1.5, y= -1

Step-by-step explanation:

6x= -5+4y

x= (-5+4y) / 6

4((-5+4y) / 6) + 5y = -11

4(-5+4y) + 5*6y = -11*6

-20+16y+30y= -66

16y + 30y = -66+20 = -46

y(16 + 30) = -46

y= -46 / (16 + 30)

y= -46 / 46

y= -1

x= (-5+4(-1)) / 6

x= (-5-4) / 6

x= -9 /6

x= -1.5

3 0

3 years ago

What is the result of dividing 2x^3+6x^2+6x+2 by x+1 ? PLEASE HELP, WILL GIVE 5 RATING

Oduvanchick [21]

2x² + 4x + 2

using long division to obtain the quotient

8 0

3 years ago

You measure 20 turtles' weights, and find they have a mean weight of 45 ounces. Assume the population standard deviation is 11.5

Naily [24]

Answer: the maximal margin of error associated with a 90% confidence interval for the true population mean turtle weight = 4.23

Step-by-step explanation:

Formula for margin of error : $E=\dfrac{z^*\times (Population\ standard\ deviation)}{\sqrt{Sample\ size}}$

, where z* = Critical z-value.

Given: population standard deviation = 11.5 ounces

Sample size = 20

Z value for 90% confidence level = 1.645

margin of error (E) = $\dfrac{1.645\times11.5}{\sqrt{20}}$

$\approx4.23$

Hence, the maximal margin of error associated with a 90% confidence interval for the true population mean turtle weight = 4.23

3 0

3 years ago

How to calculate mass of an object?

bazaltina [42]

Answer:

I think the answer is ....

Step-by-step explanation:

One way to calculate mass: Mass = volume × density. Weight is the measure of the gravitational force acting on a mass. The SI unit of mass is "kilogram".

3 0

2 years ago

Read 2 more answers