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Mama L [17]
4 years ago
7

3 students are selected from a class that has 10 boys and 5 girls. what is the probability that 1 boy and 2 girls are selected?

Mathematics
1 answer:
Nookie1986 [14]4 years ago
4 0
Chances of drawing a boy the first time = 12/16. 
<span>Chances of drawing a boy the second time = 11/15. </span>
<span>Chances of drawing a boy the third time = 10/14. </span>

<span>(12/16)(11/15)(10/14) = about 39.3%.</span>
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Name the set(s) of numbers to which 1.18 belongs.
FrozenT [24]

Answer:

Rational numbers

Step-by-step explanation:

Since 1.18 is a decimal number, it cannot belong to the set of integers or whole numbers.

However, also because it's a decimal number, it is rational because it can be written in the form p/q: 1.18=\frac{118}{100} .

Thus, 1.18 is only a rational number.

Hope this helps!

4 0
3 years ago
Read 2 more answers
Reagan has a savings account that earns 1.87% interest, compounded quarterly. If she needs $20,857 for a down payment on a house
MatroZZZ [7]
To solve this, we are going to use the compounded interest formula: A=P(1+ \frac{r}{n} )^{nt}
where 
A is the final amount after t years
P is the initial investment 
r is the interest rate in decimal form 
n is the number of times the interest is compounded per year
t is the time in years

We know from our problems that she needs $20,857 for a down payment on a house in 9 years, so A=20857 and t=9. To convert the interest rate to decimal form, we are going to divide the rate by 100%
r= \frac{1.87}{100} =0.0187
Since the interest is compounded quarterly, it is compounded 4 times per year; therefore, n=4. 
Lets replace the values in our formula to find P:
A=P(1+ \frac{r}{n} )^{nt}
20857=P(1+ \frac{0.0187}{4} )^{(4)(9)}
P= \frac{20857}{(1+ \frac{0.0187}{4} )^{(4)(9)}}
P= \frac{20857}{(1+ \frac{0.0187}{4} )^{36}}
P=17633.17

We can conclude that the correct answer is: <span>B. 17,633.17</span>
7 0
4 years ago
HELP ASAPPPP<br><br><br> please help me
Flauer [41]

Answer:

x=3, y=4

Step-by-step explanation:

hope this helps!

pls mark brainliest

4 0
2 years ago
Art wants to cover an isosceles triangle with a height of 9 centimeters and a base of 7 centimeters in fabric. How much fabric d
s2008m [1.1K]

Answer:

31.5 cm²

Step-by-step explanation:

Calculate area of a triangle with this formula:

Area = \frac{1}{2} base * height

Substitute in known values

Area = \frac{1}{2} 7 * 9

Multiply 7 by 1/2

Area = 3.5 * 9

Multiply

Area = 31.5 cm²

Hope this helps :)

6 0
3 years ago
Find the slope<br><br><br> !!!!!please help QUICK!!!!
Nataly [62]

Answer:

3/4

Step-by-step explanation:

We can find the slope using two points

( 0,-5) and ( 4,-2)

The slope is given by

m = ( y2-y1)/(x2-x1)

   = ( -2- -5)/( 4-0)

    = (-2+5)/(4-0)

     =3/4

6 0
3 years ago
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