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PolarNik [594]
3 years ago
10

Please explain how you got your answer also. A class has 21 girls and 12 boys. What is the probability that a boy's name is draw

n at random?
12 over 21
21 over 12
12 over 33
21 over 33
Mathematics
1 answer:
Tresset [83]3 years ago
3 0
It’s the answer 12 over 33
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THE LOGURITHMIC FUNCTION IS THE UNVERSE OF EXPONETIAL FUNCTION IN MATH
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Match each equation with the number that makes it true.
Burka [1]
Number 1 is 15 number 2 is 9x3=27 and number 3 is 15 and number 4 is 5x7=35 number number 6 is 5 number 7 is 11 and that is about all i know hope this helps
3 0
3 years ago
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How to simplify <br> -6k +7k<br> 12r -8 -12<br> n -10 +9n -3<br> -4x-10x<br> -r -10r
Semmy [17]

Answer:

Solve by adding or subtracting like terms. (Ex. 2k + 4k = 6k; 9 + 7 = 16)

- 6k + 7k = 1k = k

(7 - 6 = 1)

12r - 8 - 12 = 12r - 20

(8 + 12 = 20 but sign is negative) 12r will stay the same because there are no terms with a letter r.

n - 10 + 9n - 3 = 9n + n - 10 - 3 = 10n - 10 - 3 = 10n - 13

(n = 1 so 9 + 1 = 10; 10 + 3 = 13 but negative sign)

- 4x - 10x = 14x

(10 + 4 = 14)

- r - 10r = 11r

(r = 1 so 10 + 1 = 11)

6 0
3 years ago
What's the area and perimeter of a right triangle with sides 5, 12 and 13( 5 and 12 are the base and height)
uysha [10]
Perimeter is 30 
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Add the numbers to get the perimeter and then use 1/2bh to get the area. <span />
7 0
3 years ago
Read 2 more answers
12,348 <img src="https://tex.z-dn.net/?f=%5Cpi" id="TexFormula1" title="\pi" alt="\pi" align="absmiddle" class="latex-formula">
Diano4ka-milaya [45]

Answer:

radius of the sphere (r) = 21 units

Step-by-step explanation:

here's the solution : -

=》

12348\pi =  \frac{4}{3}  \times \pi \times  {r}^{3}

=》

{r}^{3}  = 12348 \times  \frac{3}{4}

( pi cancel out )

=》

{r}^{3}  = 9261

=》

r = 21

4 0
2 years ago
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