1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alona [7]
3 years ago
8

at a school there are 10 students taking only chemistry, 9 students taking only physics 5 students taking both, and 16 students

not taking either. if a student is randomly selected from the other school, what is the probability that they are taking chemistry or physics?
Mathematics
2 answers:
sveticcg [70]3 years ago
8 0

Answer:

If there are 10 students taking only chemistry, 9 students taking only physics, and 5 students only taking both chemisty and 16 students are taking neither; I would add 10+9+5+16=40 (total students) and divide 10/40 (25% chemistry) 9/40 (22.5% physics) 5/40 (12.5% both) 16/40 (40% neither)

Step-by-step explanation:

1. Determine a single event with a single outcome.

2. Identify the total number of outcomes that can occur.

3. Divide the number of events by the number of possible outcomes.

cupoosta [38]3 years ago
3 0

Answer:

3/5

Step-by-step explanation:

You might be interested in
A. -2 5/7 <br> B. - 3/8 <br> C. - 1/21<br> D. 1/3
pentagon [3]

-1/3 * (8 1/7)

= -1/3 * 57/7

= -57/21

= - 2 15/21

= -2 5/7

Answer

A. -2 5/7

7 0
3 years ago
Given the circle with the equation (x + 1)2 + y2 = 36, determine the location of each point with respect to the graph of the cir
kati45 [8]
\bf \textit{equation of a circle}\\\\ &#10;(x- h)^2+(y- k)^2= r^2&#10;\qquad &#10;center~~(\stackrel{}{ h},\stackrel{}{ k})\qquad \qquad &#10;radius=\stackrel{}{ r}\\\\&#10;-------------------------------\\\\&#10;(x+1)^2+y^2=36\implies [x-(\stackrel{h}{-1})]^2+[y-\stackrel{k}{0}]^2=\stackrel{r}{6^2}~~~~&#10;\begin{cases}&#10;\stackrel{center}{(-1,0)}\\&#10;\stackrel{radius}{6}&#10;\end{cases}

so, that's the equation of the circle, and that's its center, any point "ON" the circle, namely on its circumference, will have a distance to the center of 6 units, since that's the radius.

\bf ~~~~~~~~~~~~\textit{distance between 2 points}&#10;\\\\&#10;(\stackrel{x_1}{-1}~,~\stackrel{y_1}{0})\qquad &#10;A(\stackrel{x_2}{-1}~,~\stackrel{y_2}{1})\qquad \qquad &#10;%  distance value&#10;d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2}&#10;\\\\\\&#10;\stackrel{distance}{d}=\sqrt{[-1-(-1)]^2+(1-0)^2}\implies d=\sqrt{(-1+1)^2+1^2}&#10;\\\\\\&#10;d=\sqrt{0+1}\implies d=1

well, the distance from the center to A is 1, namely is "inside the circle".

\bf ~~~~~~~~~~~~\textit{distance between 2 points}&#10;\\\\&#10;(\stackrel{x_1}{-1}~,~\stackrel{y_1}{0})\qquad &#10;B(\stackrel{x_2}{-1}~,~\stackrel{y_2}{6})\\\\\\&#10;\stackrel{distance}{d}=\sqrt{[-1-(-1)]^2+(6-0)^2}\implies d=\sqrt{(-1+1)^2+6^2}&#10;\\\\\\&#10;d=\sqrt{0+36}\implies d=6

notice, the distance to B is exactly 6, and you know what that means.

\bf ~~~~~~~~~~~~\textit{distance between 2 points}&#10;\\\\&#10;(\stackrel{x_1}{-1}~,~\stackrel{y_1}{0})\qquad &#10;C(\stackrel{x_2}{4}~,~\stackrel{y_2}{-8})&#10;\\\\\\&#10;\stackrel{distance}{d}=\sqrt{[4-(-1)]^2+[-8-0]^2}\implies d=\sqrt{(4+1)^2+(-8)^2}&#10;\\\\\\&#10;d=\sqrt{25+64}\implies d=\sqrt{89}\implies d\approx 9.43398

notice, C is farther than the radius 6, meaning is outside the circle, hiking about on the plane.
3 0
3 years ago
Read 2 more answers
Find the measure of the angles indicated
GalinKa [24]

Both angles have a measure of 125°.

<h3>How to find the measure of the angles?</h3>

Assuming the two horizontal lines are parallel, we know that the measure of the two indicated angles must be the same one.

Then:

-1 + 14x = 12x + 17

Now we need to solve this for x:

14x - 12x = 17 + 1

2x = 18

x =18/2 = 9

Now that we know the value of x we can replace it in any of the expressions for the angles:

-1 + 14*9 = 125°

Both angles have a measure of 125°.

If you want to learn more about angles:

brainly.com/question/25716982

#SPJ1

8 0
2 years ago
2 1/7 + 9 15/28 + -9 5/14
Free_Kalibri [48]

Answer:

65/28 or 2 9/28

Step-by-step explanation:

Hope this helps!

3 0
3 years ago
Write an equivalent expression to24X +18-12 using distributive property
andrey2020 [161]

Answer:

24x - 103

Step-by-step explanation:

calculate 24x +18- 121

5 0
3 years ago
Other questions:
  • Help needed.<br> here is some text
    9·1 answer
  • What is the equation of a line that passes through (-2,-3) and is perpendicular to 2x-3y=6
    10·1 answer
  • What is the exact area of a circle with radius 5?
    8·2 answers
  • What is the GCF for 45 of 60 plz right it out
    13·1 answer
  • write and simplify an expression for the surface area of a square pyramid with a base edge length of s in. &amp; triangular face
    9·1 answer
  • I will mark you brainliest for the right answer! Thank you!
    8·1 answer
  • 1.6 + 3 x 4 - 2 divided by 2<br> An PEMDAS question, pretty easy!
    5·2 answers
  • Solve: <br><br> 4(n-7) -2 (n+3)-15n
    6·1 answer
  • I need help finding the quotients thank you to whoever helps/answers:)
    11·1 answer
  • 47 divided by 3 =____ with ____ left over
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!