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3 years ago

Y=2x-5/3x-7, make X subject

Mathematics

2 answers:

lawyer [7]3 years ago

7 0

Answer:

$x = \frac{7y - 5}{3x - 2}$

Step-by-step explanation:

Please see attached picture for full solution.

Making x the subject of formula means that x is on the left hand side and all the other terms are on the right hand side of the equal sign.

In case your question is y= [(2x-5)/3x] -7, I have also attached the working in the second picture.

Scilla [17]3 years ago

4 0

X = 7y -5 / 3y - 2

Y = 2x-5 / 3x-7
3xy -7y = 2 x - 5
X (3y-7) = x (3)

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4 years ago

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One light-year equals 5.9 x 1012 miles. How many light-years are in 6.79

inna [77]

Option B

The number of light years in $6.79 \times 10^{16}$ miles is 11508 light years

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

Given that,

One light-year equals 5.9 x 10^12 miles

Therefore,

$1 \text{ light year } = 5.9 \times 10^{12} \text{ miles }$

To find: Number of light years in $6.79 \times 10^{16}$ miles

Let "x" be the number of light years in $6.79 \times 10^{16}$ miles

Then number of light years in $6.79 \times 10^{16}$ miles can be found by dividing $6.79 \times 10^{16}$ miles by miles in 1 light year

$\text{Number of light years in } 6.79 \times 10^{16} miles = \frac{6.79 \times 10^{16}}{5.9 \times 10^{12}}\\\\\text{Use the law of exponent }\\\\\frac{a^m}{a^n} = a^{m-n}\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = \frac{6.79}{5.9} \times 10^{16-12}\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = 1.1508 \times 10^4\\\\\text{Number of light years in } 6.79 \times 10^{16} miles = 11508$

Thus number of light years in $6.79 \times 10^{16}$ miles is 11508 light years

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3 years ago

PLZZZ HELPPPP Assume line q is parallel to line m. Choose from the drop-down menus to solve for m∠6

Vikentia [17]

Answer:

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Step-by-step explanation:

All we have to do is use supplimentary angles

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