Because 35 is divisible by 7, but 23-21=2, so it becomes 25, which 7 is not a factor of. therefore, it is not divisible by 7.
Answer:
t<-25/2
Step-by-step explanation:
move the constant to the right hand side and change the sign
-2t>20+5
add the numbers
-2t>25
20+5=25
divide both sides of the inequality by-2ans flip the inequality sign
t<-25/2
Answer t<-25/2
B, Becuase 76.5 divided by three, is 25.5
Answer:
40 Feet
Step-by-step explanation:
1 inch = 10 feet
4 inch = 4 * (10 feet)
4 inch = 40 feet
Answers:
16 chickens
35 pigs
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Explanation:
x = number of chickens
y = number of pigs
There are 51 heads, so x+y = 51 which solves to y = 51-x
2x = number of legs just from the chickens (2 legs per chicken)
4y = number of legs just from the pigs (4 legs per pig)
2x+4y = 172 legs total
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Plug in y = 51-x and solve for x.
2x+4y = 172
2x+4(51-x) = 172
2x+204-4x = 172
-2x+204 = 172
-2x = 172-204
-2x = -32
x = -32/(-2)
x = 16
Now use this to find y
y = 51-x
y = 51-16
y = 35
Since x = 16 and y = 35, this means there are <u>16 chickens</u> and <u>35 pigs</u>.
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Check:
x+y = 16+35 = 51 which works
2x+4y = 2*16+4*35 = 172 and that also works.
Both equations are confirmed.
