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FinnZ [79.3K]
2 years ago
12

. Two stacks of flashcards each contain a card with one of the digits 0-9 written on the card. What is the probability of drawin

g the number 2 or 6 from the same stack of flashcards?​
Mathematics
1 answer:
gayaneshka [121]2 years ago
7 0

1/5

Step-by-step explanation:

(2,6) = 4/20 = 1/5

answer is 1/5

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Find the value of 7xº - (6x)".
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7x - 1 + 6x - 1 = 180
13x - 2 = 180
13x = 182
x = 14
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2 years ago
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X+2y-4. If;x=3, y=4, I need help solving this math problem
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The answer is
3 + (2) (4) - 4
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4 0
3 years ago
SOLVE EACH SYSTEM USING SUBSTITUTION
NNADVOKAT [17]
1. since the equations equal each other 
2x+19=x+7
-x        -x
x+19=7
  -19  -19
x= -12
sub into y= x+7
y= -12+7
y= -5

2. x+2y=-7
<span>x+y+23=0
i don't know what the second equation is equal to, i'll assume 0

2y=x-7
y=1/2x-7/2
sub this into x+y+23=0
x+1/2x-7/2+23=0
3/2x+39/2=0
       -39/2   -39/2
3/2x= -39/2
x=-39/2 / 3/2
x= -13
sub into y=1/2x-7/2
y=1/2(-13)-7/2
y= -10

3. </span>x+5y=2
<span>x=-4y+5
</span>sub x=-4y+5 into x+5y=2
-4y+5+5y=2
y+5=2
  -5  -5
y= -3
sub y =-3 into x =-4y+5
x=-4(-3)+5
x= 17

4. 3x+y=9
<span>y=-5x+9
</span>sub -5x+9 into 3x+y=9
3x+(-5x+9)=9
3x-5x+9=9
-2x+9=9
     -9  -9
-2x=0
x=0
sub into y=-5x+9
y=-5(0)+9
y=9

3 0
2 years ago
Identify the percent of change an increase or decrease then find percent of change one hundredfifty pounds to one hundred thirty
Alex777 [14]

Answer:

−10%change

 10%decrease

Step-by-step explanation:

V2−V1)|V1|×100

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=−15150×100

=−0.1×100

=−10%change

=10%decrease

Note: Percent Change is NOT the same as  Percent Difference between 150 and 135.

Hope this helps!

6 0
3 years ago
Two numbers add to 151 and the second is 21 bigger than the first. What are the two numbers?
IRISSAK [1]
96 plus 75 I think that is the answer
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3 years ago
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