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3 years ago

What is the value of Z in the equation to Z +7 equals -5

Mathematics

2 answers:

tangare [24]3 years ago

6 0

Answer:

-12

Step-by-step explanation:

The Equation:

z + 7 = -5

Solve for the variable, z by isolating it. Note the equal sign, what you do to one side, you do to the other.

Note the rule PEMDAS.

PEMDAS is the order of operation & =

Parenthesis

Exponents (& roots)

Multiplication

Division

Addition

Subtraction

Isolate the variable. To do so, subtract 7 from both sides:

z + 7 = -5

z + 7 (-7) = -5 (-7)

z = -5 - 7

Simplify:

z = -5 - 7

z = -12

-12 is your value for z.

notka56 [123]3 years ago

6 0

Answer:

Z = -12

Step-by-step explanation:

Z + 7 = -5

-7 = -7

0 = -12

Z = -12

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As we can see from the figure, BCDE is a square with each corner equal to 90°.

So that, BDE is a right triangle with corner BED equal to 90°

As BDE is a right triangle, according to Pythagoras theorem, we have:

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As the diagram s the cube, so that it can be seen that AD is perpendicular to the surface BCDE

=> AD is perpendicular to BD

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As ADB is the right triangle, ccording to Pythagoras theorem, we have:

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