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mrs_skeptik [129]
3 years ago
9

WILL GIVE BRAINLIEST a card is picked from the following card find the probability that the card drawn is purple

Mathematics
2 answers:
KiRa [710]3 years ago
8 0

Answer: 2/7

Step-by-step explanation: if there are 7 cards and two of them are purple, we can show this as 2/7

Zanzabum3 years ago
7 0
2/7 or 28.57 as a percent
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Hillsboro Middle School has 714 students. Joanna surveys a random sample of 34 students and finds that 9 of them play a musical
Lilit [14]

Answer:

about 189

Step-by-step explanation:

because out of 34 is 9 so 714 divided by 34 is 21 and 21 multiply by 9 is 189.

3 0
2 years ago
Use substitution to solve the linear system of equations. y=-3x+1 y=2x-4 (-2, 1) (1, -2) (1, 2) (-1, -2)
shtirl [24]

Answer:

Solution of the equations is (1, -2).

Step-by-step explanation:

Two linear  equations given in the question are

y = -3x+1-------------(1)

and y = 2x-4 ------------(2)

To solve these equations by substitution method we will substitute the value of y from equation (1) to equation number (2).

-3x+1 = 2x-4

Now we add 3x on both the sides of the equation

3x-3x+1 = 3x+2x-4

1 = 5x-4

we will add 4 on both the sides

1+4 = 5x-4+4

5 = 5x

Then we divide the equation by 5

5/5 = 5x/5

x = 5/5 = 1

Now we solve the equation (1) for the value of y by putting x = 1

y = -3(1)+1 = -3+1 = (-2)

So the solution will be (1 -2).



6 0
3 years ago
Ric sells shirts. It costs him $100 to buy all the shirts and $10, total, to print designs on them. Eric sells each shirt for $4
Lynna [10]
First, you'll want to identify the given in the problem.



It costs 100 dollars to purchase all of the shirts and 10 dollars to print the designs on the shirts. The result being a 110 dolar investment prior to his sales. In addition, each shirt is sold for 4 dollars and this becomes the slope of the equation.



Using this info the following equation can be used to find Eric's profit:

P=4x-110

With 4 being the slope.



Overall, after selling the 20 shirts by plugging 20 in for x we get 80-110. So his profit is -30 dollars.



Hope this helps :)
4 0
3 years ago
Simplify 9 − (−4).<br><br> −13<br> −5<br> 5<br> 13
andrew11 [14]
- - = +   9-(-4)= 9+4 so minus minus becomes plus. and 13 is the answer.
8 0
3 years ago
Read 2 more answers
Which list shows all the factors of 54? A. 1, 2, 3, 6, 9, 12, 18, 27, 54 B. 1, 2, 3, 6, 9, 18, 27, 54 C. 1, 2, 3, 6, 9, 18, 54 D
sergey [27]

Answer:

C

Step-by-step explanation:

Bc I have Big Brain and Google is nice

6 0
3 years ago
Read 2 more answers
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