3 years ago

Simplify before multiplying and use the reciprocal of the second fraction to divide.

Mathematics

1 answer:

GarryVolchara [31]3 years ago

8 0

(3/20)(4/9)/(4/30)

(3/20)(4/9)/(2/15)

(12/180)/(2/15)

(1/15)/(2/15)

(1/15)(15/2)

1/2

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Solve the system using any method. Show your work.<br> { 3 x + y = 4<br> − 3 x − y = − 8

prisoha [69]

Answer:

No solution

Step-by-step explanation:

3 x + y = 4 (1)

− 3 x − y = − 8 (2)

Add (1) and (2)

0 + 0 = -4

0 = -4 is a false statement

So, no solution

5 0

3 years ago

4x²-y²=171 and 2x-y=9, value of 2x+y

11111nata11111 [884]

So you will need to solve for x and y before evaluating 2x+y....

2x-y=9, y=2x-9 now this will make 4x^2-y^2=171 become:

4x^2-(2x-9)^2=171

4x^2-(4x^2-36x+81)=171

36x-81=171

36x=252

x=7, now we can use 2x-y=9 to solve for y...

2(7)-y=9

14-y=9

-y=-5

y=5

now we know that x=7 and y=5, 2x+y becomes:

2(7)+5

14+5

19

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3 years ago

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AysviL [449]

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3 years ago

Simplify the expression 21z - 6z + 13

Bess [88]

Answer:

15z+13

Step-by-step explanation: