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mina [271]
3 years ago
8

In a group of 25 students, 16 are female. What percentage of the group is female?

Mathematics
2 answers:
Sophie [7]3 years ago
8 0
We know quantity of girls. It's 16. 
So the <span>percentage will be 16/25*100%=64%</span>
asambeis [7]3 years ago
3 0
Percent is out of 100, and 25*4=100. So multiply 16*4=64, so the answer is 64%
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There are 16 reams of paper in a case. How many total teams of paper are in 11 cases ?
pentagon [3]

Answer:

176 reams in 11 cases

Step-by-step explanation:

1 = 16

1 x 11 = 11

16 x 11 = 176

3 0
3 years ago
Factorise x^2/4-y^2/4​
Nuetrik [128]

Answer:

\large\boxed{\left(\dfrac{x}{2}-\dfrac{y}{2}\right)\left(\dfrac{x}{2}+\dfrac{y}{2}\right)=\dfrac{x-y}{2}\cdot\dfrac{x+y}{2}}

Step-by-step explanation:

\dfrac{x^2}{4}-\dfrac{y^2}{4}=\dfrac{x^2}{2^2}-\dfrac{y^2}{2^2}\qquad\text{use}\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\=\left(\dfrac{x}{2}\right)^2-\left(\dfrac{y}{2}\right)^2\qquad\text{use}\ (a-b)(a+b)=a^2-b^2\\\\=\left(\dfrac{x}{2}-\dfrac{y}{2}\right)\left(\dfrac{x}{2}+\dfrac{y}{2}\right)=\dfrac{x-y}{2}\cdot\dfrac{x+y}{2}

3 0
3 years ago
60% of the students in class are girls. If there are 15 girls, how many students are in class?
Vlada [557]
25

If 15 is 60% of a number, it is 3/5 of the whole. Since 5 goes into 25 5 times, and 5 goes into 15 3 times, 15 is the 3/5 of 25.
4 0
3 years ago
How/where could you slice a cube to get a cross-section of a triangle? List all possible ways.
Jobisdone [24]

Don't know if this will help but if you cut it from corner to corner it will make a triangle

5 0
3 years ago
A coin is tossed 4 times. Find the probability of getting at 4 tails in a row.
7nadin3 [17]

Answer:

6.25%

Step-by-step explanation:

Each time you flip a coin, there is a 50% probability of it landing on tails. Each time you flip the coin, the 50% gets multiplied by \frac{1}{2}.

\frac{1}{2} to the power of <em>4 </em>is 0.0625. 0.0625 in percentage form is of course 6.25%

4 0
3 years ago
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