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lord [1]
3 years ago
7

In a class of 5 , there are 3 students who have done their homework. If the teacher 2 chooses 2 2 students, what is the probabil

ity that none of them have done their homework?
Mathematics
1 answer:
harkovskaia [24]3 years ago
6 0

Answer:

2 over 5

Step-by-step explanation:

This means out of 5 students only three did their work so 5-3=2

And the number of students who did their work over the total number of students in the class to find the probability

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Every 2/3 hour, Harris can sew 1/6 pair of jeans. what is the unit rate?
podryga [215]
Here is the set up:

(2/3) ÷ (1/6) = unit rate

You finish.
7 0
3 years ago
Y=3x, is this in standard form? And if not can i get an explanation on why not?
kodGreya [7K]

Answer: i would say no


Step-by-step explanation:

To write a linear equation in standard form, move each variable term to the left side of the equation and simplify.

Ax+By=C

Since x

is on the right side of the equation, switch the sides so it is on the left side of the equation.

3x=y

Move y

to the left side of the equation because it contains a variable.

3x−y=0

3 0
3 years ago
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The sales tax rate for the state of Washington was 6.9%. What is the state sales tax on a $2,600 car in Washington?
pshichka [43]

Answer:

The answer would be $179.40

Step-by-step explanation:

all you have to do is take the price of the car and multiply it by .069 (6.9% in decimal form)

8 0
4 years ago
Calculate the average rate of change for the function
mezya [45]

slope = m = \cfrac{rise}{run} \implies \cfrac{ f(x_2) - f(x_1)}{ x_2 - x_1}\impliedby \begin{array}{llll} average~rate\\ of~change \end{array}\\\\[-0.35em] \rule{34em}{0.25pt}\\\\ f(x)= 2(x-2)^2+1\qquad \begin{cases} x_1=-2\\ x_2=4 \end{cases}\implies \cfrac{f(4)-f(-2)}{4-(-2)} \\\\\\ \cfrac{[2(4-2)^2+1]~~ - ~~[2(-2-2)^2+1]}{4+2}\implies \cfrac{[9]~~ - ~~[33]}{6}\implies \cfrac{-24}{6}\implies -4

7 0
3 years ago
Please I need this before 12pm
luda_lava [24]

Answer:

The required formula is:

                                                          {\displaystyle \ a_{n}=a_{1}+(n-1)d}

Step-by-step explanation:

The total number of squares of the the first term = 4

The total number of squares of the the second term = 7

The total number of squares of the the third term = 10

so,

a_1=4

a_2=7

a_3=10

Finding the common difference d

d=a_3-a_2=10-7=3

d=a_2-a_1=7-4=3

As the common difference 'd' is same, it means the sequence is in arithmetic.

So

If the initial term of an arithmetic progression is {\displaystyle a_{1}} and the common difference of successive members is d, then the nth term of the sequence (a_n) is given by:

                         {\displaystyle \ a_{n}=a_{1}+(n-1)d}

Therefore, the required formula is:

                                                          {\displaystyle \ a_{n}=a_{1}+(n-1)d}

3 0
3 years ago
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