Answer:
x= 12.857
Step-by-step explanation:
80=5x + 2x -10 combine like terms
80= 7x -10 distributed 10 to both sides
90 =7x divide both sides by 7
12.857 =x
Answer: z = 
<u>Step-by-step explanation:</u>
67a(t + z) = 45z + 67
67at + 67az = 45z + 67
<u>-67at -45z </u> <u>-45z -67at </u>
67az - 45z = 67 - 67at
z(67a - 45) = 67 - 67at
<u>÷ (67a - 45) </u> <u>÷ (67a - 45) </u>
z = 
= 
Answer:
a<b+1
Step-by-step explanation:
a +2<b+3
a<b+3-2
a<b+1
The ostrich can run 20 miles in 40 minutes.
<u>Solution:</u>
Given that, An ostrich run 6 mile in 12 minutes
We have to find how far he could come in 40 minutes
Now, according to the given information
Ostrich runs 6 miles ⇒ 12 minutes
Then, “n” miles ⇒ 40 minutes
Now, by criss cross multiplication we get,

Hence, the ostrich can run 20 miles in 40 minutes