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4 years ago

What is the probability that a student who is not in band plays an instrument?

Mathematics

1 answer:

GenaCL600 [577]4 years ago

3 0

Answer:

Can you please write it another way because it is kind of confusing the way you have written it

Step-by-step explanation:

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The sum of two numbers is 9. Their difference is 15. Find the two numbers.

tankabanditka [31]

Answer:

x= 12 y= -3

Step-by-step explanation:

Rearrange.

x+y=9

x-y=15

Get x by itself, cancel out the y's and you'll get this:

2x=24

x= 12

Plug it in.

12+y=9

Get y.

y= -3

Check your work. I hope this helped.

5 0

3 years ago

Which completes the work correctly? (x – 3)2 + (y – 2)2 = 42, so the center is (3, 2). (x + 3)2 + (y + 2)2 = 42, so the center i

Papessa [141]

Answer:

its D

Step-by-step explanation:

im the brainliest

6 0

3 years ago

Read 2 more answers

I need help on two questions!

Inessa05 [86]

1) Answer: $\frac{x^{2}}{100} +\frac{y^{2}}{4} = 1$

<u>Explanation:</u>

The equation of an ellipse is: $\frac{(x-h)^{2}}{a^{2}} +\frac{(y-k)^{2}}{b^{2}} = 1$ ; where (h, k) is the center, "a" is the x-radius, and "b" is the y-radius.

Center Radius

x-axis: (10 + -10)/2 = 0 10 - 0 = 10

h = 0 a = 10

y-axis: (2 + -2)/2 = 0 2 - 0 = 2

k = 0 b = 2

Now, input the values into the equation:

$\frac{(x-0)^{2}}{10^{2}} +\frac{(y-0)^{2}}{2^{2}} = 1$

$\frac{x^{2}}{100} +\frac{y^{2}}{4} = 1$

************************************************************************

2) Answer: $\frac{x^{2}}{1} +\frac{(y+2)^{2}}{4} = 1$

<u>Explanation:</u>

Vertices are: (0, 1) and (0, -5) ------> x-values are the same, y = 1, -5

Covertices are: (-1, -2) and (1, -2) ----> y-values are the same, x = -1, 1

Center Radius

x-axis: (-1 + 1)/2 = 0 1 - 0 = 1

h = 0 a = 1

y-axis: (1 + -5)/2 = -2 1 - (-2) = 3

k = -2 b = 3

Now, input the values into the equation:

$\frac{(x-h)^{2}}{a^{2}} +\frac{(y-k)^{2}}{b^{2}} = 1$

$\frac{(x-0)^{2}}{1^{2}} +\frac{(y-(-2))^{2}}{3^{2}} = 1$

$\frac{x^{2}}{1} +\frac{(y+2)^{2}}{9} = 1$

3 0

4 years ago

You have towels of three sizes. The length of the first is 3 /4 m, which makes up 3/ 5 of the length of the second. The length o

Firlakuza [10]

Answer:

9/10

Step-by-step explanation:

In ratio units, the relative lengths of the first, second, and third towels are ...

... 1 : 3/5 : (5/12)·(1 +3/5)

... = 1 : 3/5 : 2/3

Then the fraction the second towel is of the third towel is ...

... (3/5)/(2/3) = (3/5)·(3/2) = 9/10

6 0

3 years ago

Help please, i don’t understand

Aloiza [94]

Answer:

if you where to flip CBE on top of ABD they will fit perfect

Step-by-step explanation:

its not rlly that hard if you can see point AD = CE so is AB=CB both triangles end at B they both have a right angle at the end of ABD and CBE and both have an acute angle at the end at point B from AD and CE

3 0

3 years ago

Read 2 more answers