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
Mashcka [7]
3 years ago
11

Help pls its been 30 minutes

Mathematics
1 answer:
Elina [12.6K]3 years ago
6 0

Answer:

probability = 6/7

Step-by-step explanation:

a+b+c= 30 students

there are 35 students in total.

=30/35

30/35 fully simplified = 6/7

the probability that a student earns a grade of A, B, or C is 6/7.

also, 6/7 as a decimal rounded the nearest hundreth is 0.86, FYI.

You might be interested in
What is 4.12×23.4 plz help me
jonny [76]
96.408 I used a calculator
3 0
2 years ago
Read 2 more answers
What is the solución of the equation x2-4x+1=0?
koban [17]

Answer:

x = 2 + √3 and

x = 2 - √3

Step-by-step explanation:

Please use " ^ " to denote exponentiation:  x^2 - 4x + 1 = 0.

Here you have multiple choices of methods of solution:

quadratic formula, completing the square, graphing, and so on.

If we complete the square, then:                   x^2 - 4x + 1 = 0 becomes

                                                                       x^2 - 4x + 4 - 4 + 1 = 0, or

(x - 2)^2 = 3

Taking the square root of both sides, we get x - 2 = ±√3, so that the roots are:

x = 2 + √3 and

x = 2 - √3

6 0
3 years ago
What is the equation of the following line written in slope-intercept form?
nasty-shy [4]
SOLUTION:

To begin with, let's establish that the formula of this line is in slope-intercept form as follows:

y = mx

The formula for this line isn't:

y = mx + b

This is as this line doesn't have a y-intercept ( b ) as it passes through the origin instead. This means that ( b ) would be rendered useless in this formula as it would just bring us back to the y = mx formula as displayed below:

y = mx + b
y = mx + 0
y = mx

Moving on, for ( m ), we need to find the gradient of the line as displayed below:

m = gradient
m = rise / run
m = 10 / 2
m = 5

Now, we must simply substitue ( m ) into the formula in order to obtain the equation for this line as displayed below:

y = mx
y = 5x

Therefore, the answer is:

A. y = 5x
6 0
3 years ago
The solution set of 2-3x/4-8=3x/4​
deff fn [24]

Step-by-step explanation:

\\ \tt{:}\leadsto  \frac{2 - 3x}{4 - 8} =  \frac{3x}{4}   \\ \\ \tt{:}\leadsto 4(2 - 3x) = 3x(4 - 8) \\ \\ \tt{:}\leadsto 8 - 12x = 3x( - 4) \\ \\  \tt{:}\leadsto 8 - 2x =   - 12x \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \\ \\ \tt{:}\leadsto 8 =  - 12x + 2x \\ \\ \tt{:}\leadsto 8 =  - 10x \\ \\ \tt{:}\leadsto x =  \frac{ - 10}{8}  \\ \\ \tt{:}\leadsto x =  \frac{ - 5}{4}

6 0
2 years ago
Read 2 more answers
Me ajudem com a 3º questão
Alisiya [41]

I can't read that language but I'll guess it says write a second degree equation then solve for n when d=10.

10 = \dfrac{n(n-3)}{2}

20 = n^2 - 3n

n^2 - 3n - 20 = 0

Answer: n² - 3n - 20 = 0

That doesn't factor so there is no integer n solution.

That means there are no polygons with 10 diagonals.

n = \frac 1 2(3 \pm \sqrt{89})

7 0
2 years ago
Other questions:
  • Seven less than the product of 1/2 and a number x
    11·2 answers
  • What polynomial expression will make this equation true?<br> (3x +2) - ? = (6x+7)
    8·1 answer
  • I need help, please
    7·1 answer
  • 2w – y = 7w – 2, for w
    5·1 answer
  • 6y - 26 and 2(3 - 13) Are they equivalent?
    11·1 answer
  • A group of 3 children and 2 adults pay a total of $120 to take a karate class. A group of 5 children and 1 adult take the same k
    14·1 answer
  • A salesman earns $250 per week PLUS a 10% commission on all sales over $5000. In one week, his sales totaled $14,000. What were
    12·1 answer
  • Calculate the exact value of cos(a−b) given that sin a=12/13 with π/2
    11·1 answer
  • 1. Thad bought 8 notebooks that cost $3.79 each. If he gave the cashier a $50 bill, how much change did he get back from the pur
    8·2 answers
  • Multiply and write the result in Scientific notation
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!