Answer:
Step-by-step explanation:
The system of equation which has no solution is
A. x + y = - 6
x + y = 12
hope it helps :)
Answer:
The surface area is
Step-by-step explanation:
we know that
The tent is a triangular prism
see the attached figure to better understand the problem
The surface area of the triangular prism is equal to
where
B is the area of the triangular face
P is the perimeter of the triangular face
L is the length of the prism
<em>Find the area of the triangular face B</em>
<em>Find the perimeter of the triangular face P</em>
we have
substitute the values
- Charmi cut a ribbon into 19 pieces . 7 of them are 11 cm each and the rest are 8 cm each .
- What was the length of the ribbon at first ?
<h2>Explanation:</h2>
<h3>Given:</h3>
- Total pieces of ribbon is 19.
- Rest (12) pieces are of 8 cm.
<h3>To Find:</h3>
- What was original the length of ribbon ?
<h3>Solution:</h3>
Let original length of ribbon was x cm. Therefore,
➟ Length of ribbons of 11 cm = No. of pieces(11)
⟹ Total length = 7(11)
⟹ 77 cm....(1)
➼ Length of ribbons of 8 cm = No. of pieces(8)
⟹ Total length = 12(8)
⟹ 96 cm.....(2)
<em><u>According</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>question</u></em><em><u>, </u></em>
Original ribbon = Equation 1 + Equation 2
- ⟹ x = Sum of length of ribbons (11 cm and 8 cm)
- ⟹ x = 77 + 96
- ⟹ x = 173 cm
Hence, original length of ribbon at first was 173 cm. (Option a is correct)
#
<span>If y varies directly with x, the formula of the equation is y=ax, where a is a constant.
y=ax
(21)=a(7)
a=3
y=ax
y=(3)(-1.66)
y=-4.98, x=-1.66
If y varies inversely with x, the formula of the equation is y=a/x, where a is a constant
y=a/x
9=a/2.5
a=22.5
y=22.5/x
y=22.5/-0.6
y=-37.5
I hope this helped! =)
I hope you didn't mind but I got this from a website called: answers.yahoo.com but I got your answer.
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