I belive she needs to score .5
i am not 100% sure though
Given that, In isosceles triangle:
Perimeter of Δ ACD +Δ BCD +20cm = Perimeter of Δ ABC
(Length of AC + Length of AD + Length of CD) + (Length of BC + Length of BD+ Length of CD) +20 cm = (Length of AC + Length of BC + Length of AB)
Since, Length of AD= Length of BD
Therefore,
Length of BD + Length of CD + 10cm = 1/2 of Length of AB
1/2 of Length of AB = Length of BD
So, Length of CD= 10 cm
tan 30° = Length of BD/Length of CD
Length of BD= 10 * tan 30° = 5.77 cm
Length of AB= Length of AD + Length of BD = 5.77 +5.77
Length of AB= 11.54 cm
The length of leg of ΔABC is 11.54 cm.
Answers:
Equation is 2*(2*W+W) = 102
Width is 17
Length is 34
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Explanation:
L = 2*W because the length is twice the width
2*(L+W) = P is the perimeter formula
Replace P with the given perimeter (102). Also replace L with 2*W. Then isolate W
2*(L+W) = P
2*(2*W+W) = 102
2*(3W) = 102
6W = 102
6W/6 = 102/6
W = 17
If the width is W = 17, then the length is
L = 2*W = 2*17 = 34
So the width and length of this rectangle is 17 by 34
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Check:
P = 2*(L+W)
P = 2*(34+17)
P = 2*51
P = 102
Answer is confirmed
Oh you got an answer good luck
Answer:
the answer is x+7y=14
Step-by-step explanation:
3x-7+5=x+6
First, simplify on boths sides. On the left side you can add -7 and 5. Then you get the equation:
3x-2=x+6
Next, you have to rearrange the equation in such a way that x is on the left side and numbers on the right side. Since we don't like the x on the right side, we substract x on both sides. 2x are left on the left side.
2x-2=6
Now, we have to get the number -2 on the other side. So we add 2 on bothe sides. Since 6+2=8, we get
2x=8
Now, we divide both sides by the number in front of the x:
X=4