Answer:4×5-10÷(2+8)=19
Step-by-step explanation: groupings is 1st 2+8 = 10 divided by 10 is 1 then 4 x 5 = 20 -1 =19
Answer:
19
Step-by-step explanation:
I edited because I accidently typed the wrong equation. This is the right answer.
A.
7.5 hours
B.
4.5 hours
C.
9 hours
D.
18 hours
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15 hours/ 5 hours = 3
3 x 1.5 hours = 4.5 hours
Eric practiced javelin for 4.5 hours.
Charles practiced javelin the same, so 4.5 hours.
4.5 / 2.5 = 1.8
5 hours x 1.8 = 9 hours
Charles practiced relay for 9 hours.
Answer is C. 9 hours
Answer:
answer is a
Step-by-step explanation:
Use this fact to show that 0.077777...=7/90
Step-by-step explanation:
Here we have , 0.7777…=7/9 . And using this fact we need to find show that
0.077777...=7/90 . Let's show this:
In the equation , Let's evaluate RHS :
⇒
⇒
But According to question , 0.7777…=7/9 , So
⇒
⇒
⇒
⇒
Since , RHS=LHS . Therefore, is proved using fact 0.7777…=7/9 .