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3 years ago

How to solve this problem: 1 1/2(n-4 1/2)=12

Mathematics

1 answer:

Vikentia [17]3 years ago

4 0

Answer:

n = 25/2, or n = 12 1/2

Step-by-step explanation:

It's essential that you use parentheses here to show how your numerals are grouped. I have made some assumptions here, and believe you meant:

(1 1/2)(n - 4 1/2) = 12.

First, convert 1 1/2 and 4 1/2 into improper fractions:

(3/2)(n - 9/2) = 12

Multiplying both sides by (2/3) eliminates the fractional coefficient (3/2):

n - 9/2 = (2/3)(12), or n - 9/2 = 8.

Again, eliminate the fraction by multiplying all terms by 2:

2n - 9 = 16

Then 2n = 25, and n = 25/2, or n = 12 1/2

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Answer:

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Step-by-step explanation:

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3 years ago

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Find the slope of the line passing through the given points.

deff fn [24]

Answer:

<h3>The answer is - 3</h3>

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

$m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\$

From the question we have

$m = \frac{8 - 5}{ - 8 - - 7} = \frac{3}{ - 8 +7 } = - \frac{3}{1} = - 3 \\$

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2 years ago

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iren [92.7K]

Answer:

y=3x-7

Step-by-step explanation:

lines are parallel hence gradient from the equation in question is the same as the gradient of the equation to be found.. comparing to y=mx+c, eq in question has grad 3... from the formula y-y1=m(x-x1) where (x1,y1) is equal to the point in question

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3 years ago

Which points are on the graph of g(x) = (1/5)^x

11111nata11111 [884]

Answer:

A) The point( -1 , 5) is satisfies the given graph $g(x) = (\frac{1}{5} )^{x}$

B) The point( 3 , 1/125) is satisfies the given graph $g(x) = (\frac{1}{5} )^{x}$

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given graph

y = $g(x) = (\frac{1}{5} )^{x}$

Put the point ( -1 , 5)

Put y =5 and x =-1

$5 = (\frac{1}{5} )^{-1} = 5$

The point( -1 , 5) is satisfies the given graph

ii)

Given graph

y = $g(x) = (\frac{1}{5} )^{x}$

$\frac{1}{125} = (\frac{1}{5} )^{3} = \frac{1}{125}$

The point( 3 , 1/125) is satisfies the given graph $g(x) = (\frac{1}{5} )^{x}$

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3 years ago

Which table might represent ava's line ?

Serjik [45]

Answer:

The correct option is 3.

Step-by-step explanation:

To find the slope of a line Ava wrote the expression

$m=\frac{4-2}{3-1}$ ..... (1)

The formula to find the slope is

$m=\frac{y_2-y_1}{x_2-x_1}$ .... (2)

On comparing (1) and (2), we get

$x_1=1, y_1=2$

$x_2=3, y_2=4$

It means the value of y is 2 at x=1 and the value of y is 4 at x=3.

Therefore table 3 represents the Ava's line and option 3 is correct.

3 0

3 years ago