4 years ago

5 divided by twice the value of x

Mathematics

1 answer:

Ray Of Light [21]4 years ago

8 0

Whats the value of X?

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Solve the system of linear equations by elimination 2x+7y=1 2x-4y=12

pishuonlain [190]

$\left\{\begin{array}{ccc}2x+7y=1\\2x-4y=12&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}2x+7y=1\\-2x+4y=-12\end{array}\right}\qquad\text{add both sides of equations}\\.\qquad\qquad11y=-11\qquad\text{divide both sides by 11}\\.\qquad\qquad \boxed{y=-1}\\\\\text{Put the value of y to the first equation:}\\\\2x+7(-1)=1\\2x-7=1\qquad\text{add 7 to both sides}\\2x=8\qquad\text{divide both sides by 2}\\\boxed{x=4}\\\\Answer:\ \boxed{x=4\ and\ y=-1\to(4,\ -1)}$

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4 years ago

During a recent election, 42 of every 100 registered voters in a certain city voted. If there were 158 , 200 registered voters i

Ivanshal [37]

Seeing as there are 1582 sets of 100 people (158200 ÷ 100) multiplying 42 by 1582 should get you the answer. 1582 × 42 = 66444. 66444 people voted in that city.

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3 years ago

A basketball player shoots when she is 16 ft from the backboard. Given the ball has an initial velocity v0 at an angle of 30° wi

astra-53 [7]

The answer is 29.574 ft.

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3 years ago

Ethan works in a department store selling clothing. He makes a guaranteed salary of $500 per week, but is paid a commision on to

ElenaW [278]

The total amount of money Ethan made in a week including commission is $812.5

<h3>Total income</h3>

Total sales for the week = $1250
Base salary = $500
Percentage commission = 25%

Amount of commission earned = 25% of $1250

= 25/100 × $1,250

= 0.25 × 1250

= $312.5

Total earnings = Base salary + Amount of commission earned

= $500 + $312.5

= $812.5

Learn more about income:

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2 years ago

What is -1/2 + n = -5/8 what does n equal

Stels [109]

Answer: n=0.4 or 2/5

Step-by-step explanation:

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3 years ago