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3 years ago

HELP PLZZZZ like asap

Mathematics

2 answers:

ZanzabumX [31]3 years ago

8 0

Answer:

Step-by-step explanation:

You can substitute the variables for the values!

7x = 21

3y = -6

2x = 6

y = -2

21 - (-6)

----------

6 + (-2)

----

Anestetic [448]3 years ago

7 0

Answer:

The answer is B

Step-by-step explanation:

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Evaluate the expression 3 4/5x-2 1/2 for x =-10

lyudmila [28]

Answer:

The value of given expression for x = - 10 is - 81

Step-by-step explanation:

Given expression as :

3 $\frac{4}{5}$ x - 2 $\frac{1}{2}$

Or, 3 + $\frac{4}{5}$ x - 2 - $\frac{1}{2}$

Or, $\frac{19}{5}$ x - $\frac{5}{2}$

or, $\frac{38 x - 25}{5}$

Now for x = - 10

$\frac{38\times (- 10) - 25}{5}$

Or, ${38\times (- 2) - 5}$

∴ - 76 - 5

Or, - 81

Hence The value of given expression for x = - 10 is - 81 Answer

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3 years ago

4(x-5)=10(x-10) solve for x

Zina [86]

Answer:

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Step-by-step explanation:

4x -20 = 10x -100 (Distributive Property)

4x -10x = -100 +20 (I swith the numbers so all of them are similar)

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And you will get 40/3 or 13.3333..

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3 years ago

Write 6 1 2 as an improper fraction.

kompoz [17]

Answer:

13/2

Step-by-step explanation:

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4 years ago

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It would be 40% because those percentages added up would be 90

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Here is the answer from SparkNotes

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4 years ago

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