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Tanya [424]
3 years ago
12

Can someone solve for x lol

Mathematics
1 answer:
posledela3 years ago
3 0

Answer:

  x = 2

Step-by-step explanation:

Assuming the figure is a rhombus, the diagonal divides the figure into two isosceles triangles. That means the marked angles are congruent:

  7x² -8 = 6x² -2x

  x² +2x -8 = 0 . . . . . . . subtract 6x²-2x

  (x +4)(x -2) = 0 . . . . . factor

  x = -4  or  x = 2 . . . . . values of x that make the factors zero

The only value of x that makes sense in this problem is ...

  x = 2

__

<em>Additional comment</em>

We know the base angles of an isosceles triangle must be less than 90°. As the attached graph shows, the angle measures for x=-4 would both be 104°, an impossible situation for this geometry.

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Combine Like Terms and Eliminate Parenthesis.<br>5z-[2z-(13z+8)]
katen-ka-za [31]

We need to start from the innermost parenthesis and work our way out.

The first parenthesis is 13z+8. These are not like terms because one involves a variable, while the other is a constant term. Two terms are summable if they involve the same power(s) of the same variable(s).

So, we can take one step outwards, and we arrive to the square brackets. We have

2z-13z-8

and 2z and -13z are like terms, so we can sum them:

2z-(13z +8) = 2z-13z-8 = (2-13)z-8 = -11z-8

Finally we arrive to the whole expression, which is

5z-(-11z-8) = 5z+11z+8 = (5+11)z+8=16z+8

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6 0
3 years ago
Compute 5e2 - 4g + 7 where e = 4 and g = 6 ?
Elza [17]

The value of expression is 63 when e = 4 and g = 6

<em><u>Solution:</u></em>

<em><u>Given expression is:</u></em>

5e^2-4g+7

We have to solve the expression

Given that e = 4 and g = 6

<em><u>Substitute e = 4 and g = 6 in given expression</u></em>

\rightarrow 5(4)^2 -4(6) + 7\\\\Simplify\ the\ above\ equation\\\\\rightarrow 5(16) -24 + 7\\\\\rightarrow 80-24+7\\\\Simplify\\\\\rightarrow 56+7=63

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3 years ago
An aquarium sells five stuffed animal sharks for $64.95. What is the cost of eight stuffed animal sharks?
Gekata [30.6K]
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Process:
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evablogger [386]

Answer:

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Step-by-step explanation:

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Coffee blend is 100 pounds and x represent number of pounds of coffee A

Hence coffee B = 100-x

Algebraic expression representing number of coffee B = 100-x

8 0
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Please help
tankabanditka [31]

Answer: (2a+2b,2c)

the first one

Step-by-step explanation:

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sorry i such at explaining

4 0
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