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
sergiy2304 [10]
3 years ago
10

What is the probability of selecting a seventh-grader from a school that has 250 sixth-graders, 225 seventh-graders, and 275 eig

hth-graders?
Mathematics
1 answer:
Nina [5.8K]3 years ago
3 0

Answer:

3/10 or 0.3 or 30%

Step-by-step explanation:

Its 225/750 total students

We simplify this by dividing by 5

45/150

Divide by 5 again

9/30

Divide by 3

3/10

You might be interested in
Cory's roses grow around 1 inch each month. When he planted them they were 6 inches tall.
Stella [2.4K]

Answer:

r=12 as answer but as you will have reflective numbers (r12+2)(10x10)=3 in this sort of equation you will see that as they grew at a 88.3% rate 5/6 and 0.16 is a per month rate the coefficient value we can round down and call r12 = 6 for step 2 in the equation. As we can also find +0.88 which rounds to 1 and 0.33 the rate of change per month rounds to -1 and -100/12=8.3 if you are looking for the percentage. To find 6 we only need to 10/10 = 1. It is important you keep an equation simple for the growth as the change in measurement will always need a new percentage and we have a base number that can show such percentage as if it changed to 100% again at 12 inches we could reuse the equation =3-2=1 etc. or r12/100 =0.88 r=rise percentage and also be divided into 2 if we call r12 and r2 in same first equation to make r6.

Step-by-step explanation:

8 0
3 years ago
Find the area
Kitty [74]

Answer: 54 cm^2

Step-by-step explanation:

The area of a triangle is base*height/2.

To find the missing side of this triangle we can use pythagorean theroem. Let the unknown side = x

15^2 = 12^2+x^2

225 = 144+x^2

x^2 = 81

x = 9

Area = BH/2

Area = 9*12/2

Area = 54 cm^2

7 0
2 years ago
Read 2 more answers
How to work out problem 6 3/4 - 8 2/3
Dafna11 [192]

Answer:

-23/12

Step-by-step explanation:

6 3/4-8 2/3

=27/4-26/3

=3*27-26*4/12

=81-104/12

=-23/12

8 0
4 years ago
Read 2 more answers
Find u in terms of m,g and v in this equation E = m/2g(v²-u²)<br>​
igor_vitrenko [27]

Step-by-step explanation:

E = m/2g(v²-u²)

2g×E = 2g×m/2g(v²-u²)

2Eg = m(v²-u²)

2Eg = mv² - mu²

mu²= mv² -2Eg

mu²/m = mv² -2Eg /m

u²= v² -2Eg

u = √v²-√2Eg

3 0
3 years ago
What is the side length, s, of the square? A= 81 m2
Alborosie

Answer:

The side length is 9 m

Step-by-step explanation:

The area of a square is given by

A = s^2

81 = s^2

Take the square root of each side

sqrt(81) = sqrt(s^2)

9 =s

The side length is 9 m

4 0
4 years ago
Other questions:
  • If angle tap and angle bre are supplementary and angle bre is its own complement, find the measure of angle tap
    14·1 answer
  • ASAP!! Please help me. I will not accept nonsense answers, but will mark as BRAINLIEST if you answer is correctly with solutions
    12·1 answer
  • What is the domain of the function y=sqrt x+4
    14·2 answers
  • What is the volume of the cylinder below?
    8·2 answers
  • Find the probability of winning second prize (that is, picking five of the six winning numbers) with a 6/44 lottery, as played i
    6·1 answer
  • Jesse makes a 6% commission on every sale he makes, if he sold $875 worth of items this week, how much will he make in commissio
    5·2 answers
  • Help me with my homework please!
    10·2 answers
  • Could anyone help me please 10x2y+4x2y
    15·2 answers
  • Someone help meeee :))
    10·2 answers
  • 15 men produce 500 watches in 15 working days. How long would it take 45 men to produce 500
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!