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
cestrela7 [59]
3 years ago
8

There are 25boys and 15girls in a class.if a student is picked at random .what is the probability that the student is a girl

Mathematics
1 answer:
emmasim [6.3K]3 years ago
7 0

Answer:

Step-by-step explanation:

Total Students in Class = 25+ 15=40

Probability= (Number of Girls in Class) ÷ (Total students in Class)

Probability of girl= 15  ÷ 40 = 0.375

You might be interested in
Y = -3x - 2 and 5x + 2y = 15
denis-greek [22]

Answer:

(-19, 55)

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = -3x - 2

5x + 2y = 15

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y</em>:                     5x + 2(-3x - 2) = 15
  2. Distribute 2:                          5x - 6x - 4 = 15
  3. Combine like terms:            -x - 4 = 15
  4. Isolate <em>x</em> term:                      -x = 19
  5. Isolate <em>x</em>:                               x = -19

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define original equation:                    y = -3x - 2
  2. Substitute in <em>x</em>:                                     y = -3(-19) - 2
  3. Multiply:                                                y = 57 - 2
  4. Subtract:                                               y = 55
8 0
3 years ago
Area of square is numerically less than twice its diagonal by 2. Find its Perimeter.
Usimov [2.4K]
2D-a^2=2

2(a√2) -a^2=2

a^2-2√2*a+2=0

2a= 2√2 + √(8-4*2) = 2√2 
hence, perimeter = 4a = 2*2a=2*2√2 = 4√2
8 0
3 years ago
Helen is choosing a main course and a dessert in a restaurant.
Mila [183]

Answer:48

Step-by-step explanation:

6*8 shows the c9nbonations of just then 2 together

3 0
3 years ago
Steph runs a vehicle body repair shop with one mechanic in Cleveland. Repair time for vehicles is exponentially distributed, wit
horsena [70]

Answer:

System utilization = 0.7 or 70%

Step-by-step explanation:

Given arrival rate of customer = 15 customer/Hour

Servie rate = \dfrac{60}{2.8} customer/Hour

Now, use the below formula to find the system utilization.

System utilization = \dfrac{\text{ Arrival rate of customer }}{\text{ Servie rate}}

System utilization = \dfrac{15}{ \dfrac{60}{2.8}}

System utilization = \dfrac{15}{ \dfrac{60}{2.8}}

System utilization = 0.7 or 70%

5 0
3 years ago
On a sunny day Josée’s shadow
Minchanka [31]

Answer:

it is c

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • One number is four more than twice another. Their sum<br> is 34. Find the numbers.
    7·1 answer
  • I'll give brainiest for three correct answers
    7·2 answers
  • Four tacos and two drinks cost $8.14. Seven tacos and three drinks cost $13.30. What is the cost of one taco and one drink?
    13·1 answer
  • What is the common ratio for this geometric sequence?<br> 5,15,45,135...
    10·1 answer
  • Consider the irrational number 73 . Between what two integers is the value of this number? A) 6 and 7 B) 7 and 8 C) 8 and 9 D) 9
    7·1 answer
  • A parking space shaped like a parallelogram has a base of 17 feet and a height is 9 feet. A car parked in the space is 16 feet l
    6·1 answer
  • What is the volume of a cube whose one side is 5cm​
    9·2 answers
  • One solution of x^2 - 64 = 0 is 8. what is the other solution​
    14·1 answer
  • Jane cloaked in to world on Tuesday at 7:30 am and went to her lunch at 11:30 am. She returned from her lunch break at 12:30 pm
    11·1 answer
  • 4(w-4) - 7w help me pleass
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!