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3 years ago

How can you know if this equation is true 1/3 + 1/5 = 2/8 = 1/4

Mathematics

1 answer:

Zina [86]3 years ago

5 0

All I know is this equation is not true.

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Rearrange to make x the subject of 4(x-3)/a=y

IrinaVladis [17]

Answer: x = a*y + 3

Step-by-step explanation:

To make x the subject of the equation, first, we open the bracket

4x - 12/a = y

Then cross multiply:

4x - 12 = a * y ( a*y means the product of the two variables)

Add 12 to both sides of the equation

4x = a*y + 12

Divide both sides by 4 to get the value of x

x = a * y + 12/4

x = a*y + 3

I hope this helps.

4 0

2 years ago

If sin(2x)=cos (x+30°), what is the value of x?

Murljashka [212]

Answer:

x=20

Step-by-step explanation:

Please mark as brainliest

3 0

2 years ago

What is five to the -7th power times five to the 12 power

leva [86]

5^-7 * 5^12

Because the base is the same, add the exponents.
5^ (-7+12)= 5^5

Final answer: 5^5, or 3125

5 0

2 years ago

Read 2 more answers

HELPPPPPPPPPPPPPPPPWhich statements are true about the ordered pair(-1, -4) and the system of

Anastasy [175]

Answer:

When (-1,-4) is substituted into the second equation, the equation is true.

The ordered pair (-1,-4) is a solution to the system of linear equations.

When (-1,-4) is substituted into the first equation, the equation is true.

Step-by-step explanation:

Given

$x - y = 3$

$7x - y = -3$

Required

What is true about $(x,y) = (-1,-4)$

To do this, we substitute -1 for x and -4 for y in both equations;

For $x - y = 3$

$-1 - (-4) = 3$

$-1 + 4 = 3$

$3 = 3$

Hence: $(-1,-4)$ is true for $x - y = 3$

For $7x - y = -3$

$7(-1) - (-4) = -3$

$-7 +4 = -3$

$-3 = -3$

Hence: $(-1,-4)$ is true for $7x - y = -3$

3 0

2 years ago

Answer, show work, due today

Minchanka [31]

Answer:

60%

Step-by-step explanation:

13.5/22.5

6 0

2 years ago