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Andrej [43]
3 years ago
12

Write an expression to show the sum of x and y

Mathematics
1 answer:
asambeis [7]3 years ago
8 0

Answer:

x + y

Step-by-step explanation:

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What value is added to the both sides of the equation x^2-6x=10 in order to solve by completing the square?
mina [271]

I believe that the answer would be to add 10 to both sides, srry if I'm incorrect!

5 0
3 years ago
Help me with this question below
lutik1710 [3]
See attached picture for steps and answer:

3 0
3 years ago
A photograph is 4 inches high and 5 inches wide. You need to scale it up so it is 10 inches high. How wide should it be?
IrinaK [193]

Answer: 12.5 in. high

Step-by-step explanation: to get from 4 to 10, you have to muliplty by 2.5.

if you multiply 5 by 2.5, the answer is 12.5

8 0
3 years ago
Solve the quadratic equation x2+8x−30=0 by completing the square.
diamong [38]

Answer:

               \bold{x=-4\pm\sqrt{46}}

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2\\\\\\x^2+8x-30=0\\\\\underbrace{x^2+2\cdot x\cdot 4+4^2}-4^2-30=0\\\\{}\qquad(x+4)^2\,-\,16-30=0\\\\{}\qquad\ \ (x+4)^2=46\\\\ {}\qquad\ \ x+4=\pm\sqrt{46}\\\\ {}\qquad\ \ x=-4\pm\sqrt{46}

5 0
3 years ago
Find the surface area of the triangular prism (above) using its net (below).
r-ruslan [8.4K]

Answer:

96 square units

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  Please have a look at the attached photo.

My answer:

  • The length of the large rectangle is: 5
  • The width of the large rectangle is: 7

=> Area of the large rectangle = length × width  = 7*5 = 35 square units

  • The length of the middle rectangle is: 7
  • The width of the middle rectangle is: 4

=> Area of the middle rectangle = length × width  = 7*4 = 28 square units

  • The length of the small rectangle is: 7
  • The width of the small rectangle is: 3            

=> Area of the small rectangle = length × width  = 7*3 = 21 square units

Area of top and the bottom triangles =2* \frac{1}{2}bh  = 4*3 =12  

Total surface area = 35 + 28 + 21 + 12 = 96 square units

3 0
3 years ago
Read 2 more answers
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