Im not sure cuz i learned this for long time ago
but i think 5 is 1
and 7 might be2
i have no idea for 8
im sorry :/
Answer:
Total number of quarters=10
Total number of nickels=19
Step-by-step explanation:
The expression for the total value of money you have is;
Quarters have a value of= $0.25
Nickels have a value of= $0.05
Total value=(value of quarters×number of quarters)+(value of nickels×number of nickels)
where;
Total value=$3.45
Value of a quarter=$0.25
number of quarters=x
Value of a nickel=0.05
number of nickels=y, but y=x+9
replacing;
3.45=(0.25×x)+0.05(x+9)
3.45=0.25 x+0.05 x+0.45
3.45=0.3 x+0.45
0.3 x=3.45-0.45
0.3 x=3
x=3/0.3
x=10
y=x+9=10+9=19
Total number of quarters=10
Total number of nickels=19
b - is a part of segment = 9.
We can see that
9 =b + x
b+x+b =12 -----> 2b + x =12
b +x=9 /*(-2) ------> -2b - 2x = -18
2b+x=12
-2b - 2x = -18
<u> 2b + x = 12</u>
-x = -6
x = 6
Answer: the ordered pair negative 3 over 8, negative 5 over 8
Step-by-step explanation:
Step-by-step explanation:
a)
<u>Fill in the table:</u>
- Heads | 2 ⇒ 4 ⇒ 6⇒ 8 ⇒ 10 ⇒ 12
- Tails | 1 ⇒ 2 ⇒ 3 ⇒ 4 ⇒ 5 ⇒ 6
b)
The score of 4 is obtained in 2 cases out of 12 as per above table.
<u>The probability is:</u>
c)
The score of 10 is obtained once in 12 cases as per table.
<u>The probability is:</u>
<u>Out of 60 times he can score 10:</u>
