Some one help me please I'm having trouble
1 answer:
Ooh, these are fun
if 2 are in a row, then we have the 3rd number, easy
you got number 1, 2, 3, 4 right I th ink
5.
7+?+10=24
17+?=24
?=7
that middle right blank is 7
now
8+7+?=24
15+?=24
?=9
middle left blank is 9
we can also find the diagonal (bottom left to top right0
?+8+7=24
?=9
bottom left is 9
we now can do bottom row
9+?+10=24
19+?=24
5=?
bottom middle is 5
now go vertical, left most
9+9+?=24
18+?=24
?=6
top left is 6
finally, 6+?+7=24
13+?=24
?=11
top middl is 11
6.
middle left
?+10+5=30
15+?=30
?=15
middle left is 15
now left row
9+15+?=30
24+?=30
?=6
bottom left=6
diagonals
topl left to bottom right
9+10+?=30
19+?=30
?=11
bottom left=11
bottom row
6+?+11=30
17+?=30
?=13
bottom middle=13
middle collumn
?+10+13=20
?+26=30
?=4
top middle=4
top row
9+4+?=30
13+?=30
?=17
top right=17
if 2 are in a row, then we have the 3rd number, easy
you got number 1, 2, 3, 4 right I th ink
5.
7+?+10=24
17+?=24
?=7
that middle right blank is 7
now
8+7+?=24
15+?=24
?=9
middle left blank is 9
we can also find the diagonal (bottom left to top right0
?+8+7=24
?=9
bottom left is 9
we now can do bottom row
9+?+10=24
19+?=24
5=?
bottom middle is 5
now go vertical, left most
9+9+?=24
18+?=24
?=6
top left is 6
finally, 6+?+7=24
13+?=24
?=11
top middl is 11
6.
middle left
?+10+5=30
15+?=30
?=15
middle left is 15
now left row
9+15+?=30
24+?=30
?=6
bottom left=6
diagonals
topl left to bottom right
9+10+?=30
19+?=30
?=11
bottom left=11
bottom row
6+?+11=30
17+?=30
?=13
bottom middle=13
middle collumn
?+10+13=20
?+26=30
?=4
top middle=4
top row
9+4+?=30
13+?=30
?=17
top right=17
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Answer:
The lengths of the sides of the playground are 14 feet, 6 feet, 7 feet
Step-by-step explanation:
At first, let us find the perimeter of the playground
∵ Perimeter of a triangle is P = S1 + S2 + S3
∵ The sides of the triangular playground are (2x) ft, (x - 1) ft, and x ft
∴ S1 = 2x, S2 = x - 1, S3 = x
→ Substitute them in the rule of the perimeter above
∵ P = 2x + x - 1 + x
→ Add the like terms
∴ P = (2x + x + x) - 1
∴ P = 4x - 1
∵ The perimeter of this playground is 27 feet
∴ P = 27
→ Equate the two values of P
∴ 4x - 1 = 27
→ Add 1 to both sides
∴ 4x - 1 + 1 = 27 + 1
∴ 4x = 28
→ Divide both sides by 4
∵ =
∴ x = 7
→ Substitute the value of x in each side to find their lengths
∵ S1 = 2(7)
∴ S1 = 14 feet
∵ S2 = 7 - 1
∴ S2 = 6 feet
∵ S3 = 7 feet
∴ The lengths of the sides of the playground are 14 feet, 6 feet, 7 feet