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2 years ago

Solve y+1/2-2y-1/2=4

Mathematics

1 answer:

jeka57 [31]2 years ago

3 0

Answer:

y+1/2-2y-1/2=4

y-2y=4

-y=4

y=-4

Let me know if this helps!

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Help me please. I will mark the brainless when it will let me

Tamiku [17]

Answer:

25 rooms per floor

Step-by-step explanation:

550÷22=25

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2 years ago

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What is the least common multiple (lcm)of 2,3, and 6

laiz [17]

<h3>Answer: 6</h3>

Explanation:

List list the multiples of each value

multiples of 2 = {2, 4, 6, 8, 10, ...}
multiples of 3 = {3, 6, 9, 12, 15, ...}
multiples of 6 = {6, 12, 18, 24, ...}

In each list, we see 6 show up. This is the smallest multiple that is in common; therefore, the LCM is 6

Side note: The LCM is useful to help add and subtract fractions.

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2 years ago

What is an equation of a line that passes through the point of (-8 2) and (-4,-3)

Alex_Xolod [135]

Answer:

Step-by-step explanation:

$(-8,2)=(x_1 ,y_1)\\(-4 ,-3) = (x_2 ,y_2)\\\\\frac{y-y_1}{x-x_1} = \frac{y_2-y_1}{x_2-x_1}\\ \\\frac{y-2}{x-(-8)}= \frac{-3-2}{-4-(-8)}\\ \\\frac{y-2}{x+8}= \frac{-5}{-4+8} \\ \\\\\frac{y-2}{x+8} = \frac{-5}{4}\\ \\Cross\:Multiply \\4(y-2) = -5(x+8)\\\\4y-8 =- 5x-40\\\\4y = -5x-40+8\\\\4y =- 5x-32\\\\\frac{4y}{4} = \frac{-5x}{4} + \frac{-32}{4} \\\\y = -\frac{5}{4}x-8$

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3 years ago

Write 2x - x2 = 1 in standard form. An equation in standard form is

Marat540 [252]

Answer:

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Step-by-step explanation:

given,2X-X^2=1

or,-(X^2-2X)=1

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3 years ago

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A recent gasoline survey said that the national average price of gasoline was $1.298 a gallon. It was felt that gasoline price i

slava [35]

Answer:

alternative hypothesis : H₁ :

Recent Gasoline surveys felt that gasoline price in Texas was significantly lower than the national average

Alternative Hypothesis : H₁: μ < $1.298 a gallon

Step-by-step explanation:

Explanation:-

Given A recent gasoline survey said that the national average price of gasoline was $1.298 a gallon

Population average μ= $1.298 a gallon

sample size 'n' = 37

Sample mean (x⁻) = $1.192 a gallon

Sample standard deviation 'S' = $0.0436

Null hypothesis :H₀ : μ = $1.298 a gallon

Alternative Hypothesis : μ < $1.298 a gallon

Degrees of freedom : ν = n-1= 37-1=36

t₀.₀₂₅ = 1.688

Test statistic

$t = \frac{x^{-}-mean }{\frac{S}{\sqrt{n} } }$

$t = \frac{1.192-1.298 }{\frac{0.0436}{\sqrt{37} } }$

t = -14.8044

|t| = |-14.8044| > 1.688

Null hypothesis is rejected

Alternative hypothesis is accepted

Recent Gasoline surveys felt that gasoline price in Texas was significantly lower than the national average

6 0

2 years ago

Solve y+1/2-2y-1/2=4​

Solve y+1/2-2y-1/2=4